./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc --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 74d57b3f1e9a386b0ff6bac396d798184771ae1b1b0bb917f750fc3ebefb1c2f --- 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-5e519f3 [2022-11-02 20:36:20,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:36:20,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:36:20,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:36:20,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:36:20,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:36:20,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:36:20,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:36:20,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:36:20,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:36:20,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:36:20,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:36:20,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:36:20,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:36:20,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:36:20,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:36:20,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:36:20,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:36:20,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:36:20,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:36:20,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:36:20,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:36:20,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:36:20,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:36:20,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:36:20,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:36:20,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:36:20,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:36:20,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:36:20,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:36:20,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:36:20,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:36:20,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:36:20,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:36:20,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:36:20,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:36:20,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:36:20,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:36:20,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:36:20,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:36:20,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:36:20,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:36:20,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:36:20,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:36:20,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:36:20,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:36:20,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:36:20,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:36:20,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:36:20,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:36:20,185 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:36:20,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:36:20,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:36:20,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:36:20,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:36:20,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:36:20,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:36:20,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:36:20,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:36:20,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:36:20,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:36:20,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:36:20,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:36:20,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:36:20,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:36:20,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:36:20,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:20,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:36:20,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:36:20,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:36:20,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:36:20,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:36:20,190 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:36:20,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:36:20,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:36:20,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74d57b3f1e9a386b0ff6bac396d798184771ae1b1b0bb917f750fc3ebefb1c2f [2022-11-02 20:36:20,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:36:20,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:36:20,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:36:20,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:36:20,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:36:20,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:36:20,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/data/0d26fbbaa/d8d194905c42492dbbf36a6873eab6f1/FLAGd6778e6fe [2022-11-02 20:36:21,204 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:36:21,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:36:21,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/data/0d26fbbaa/d8d194905c42492dbbf36a6873eab6f1/FLAGd6778e6fe [2022-11-02 20:36:21,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/data/0d26fbbaa/d8d194905c42492dbbf36a6873eab6f1 [2022-11-02 20:36:21,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:36:21,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:36:21,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:21,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:36:21,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:36:21,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:21" (1/1) ... [2022-11-02 20:36:21,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d358235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:21, skipping insertion in model container [2022-11-02 20:36:21,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:21" (1/1) ... [2022-11-02 20:36:21,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:36:21,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:36:21,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2022-11-02 20:36:21,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2022-11-02 20:36:21,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:21,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:36:21,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2022-11-02 20:36:21,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2022-11-02 20:36:21,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:22,005 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:36:22,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22 WrapperNode [2022-11-02 20:36:22,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:22,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:22,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:36:22,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:36:22,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,055 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 445 [2022-11-02 20:36:22,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:22,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:36:22,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:36:22,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:36:22,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:36:22,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:36:22,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:36:22,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:36:22,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (1/1) ... [2022-11-02 20:36:22,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:22,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:22,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:36:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:36:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:36:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:36:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:36:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:36:22,315 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:36:22,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:36:22,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:36:22,967 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:36:22,967 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:36:22,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:22 BoogieIcfgContainer [2022-11-02 20:36:22,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:36:22,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:36:22,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:36:22,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:36:22,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:36:21" (1/3) ... [2022-11-02 20:36:22,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38be66b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:22, skipping insertion in model container [2022-11-02 20:36:22,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:22" (2/3) ... [2022-11-02 20:36:22,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38be66b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:22, skipping insertion in model container [2022-11-02 20:36:22,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:22" (3/3) ... [2022-11-02 20:36:22,987 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:36:23,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:36:23,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:36:23,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:36:23,089 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;@43c20b36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:36:23,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:36:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 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) [2022-11-02 20:36:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:36:23,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:23,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:23,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1096512752, now seen corresponding path program 1 times [2022-11-02 20:36:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:23,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154078372] [2022-11-02 20:36:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:23,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:23,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:23,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154078372] [2022-11-02 20:36:23,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154078372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:23,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:23,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680720254] [2022-11-02 20:36:23,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:23,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:23,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:23,714 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 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 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2022-11-02 20:36:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:24,110 INFO L93 Difference]: Finished difference Result 422 states and 668 transitions. [2022-11-02 20:36:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:36:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2022-11-02 20:36:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:24,126 INFO L225 Difference]: With dead ends: 422 [2022-11-02 20:36:24,127 INFO L226 Difference]: Without dead ends: 358 [2022-11-02 20:36:24,130 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 [2022-11-02 20:36:24,134 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 596 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:24,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 775 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:36:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-02 20:36:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 156. [2022-11-02 20:36:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.4415584415584415) internal successors, (222), 155 states have internal predecessors, (222), 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) [2022-11-02 20:36:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2022-11-02 20:36:24,197 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 47 [2022-11-02 20:36:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:24,198 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2022-11-02 20:36:24,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2022-11-02 20:36:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2022-11-02 20:36:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:36:24,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:24,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:24,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:36:24,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash 191283016, now seen corresponding path program 1 times [2022-11-02 20:36:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:24,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703201634] [2022-11-02 20:36:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:24,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:24,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703201634] [2022-11-02 20:36:24,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703201634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:24,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:24,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:36:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996106926] [2022-11-02 20:36:24,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:36:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:36:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:36:24,379 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:24,481 INFO L93 Difference]: Finished difference Result 247 states and 359 transitions. [2022-11-02 20:36:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:36:24,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-02 20:36:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:24,484 INFO L225 Difference]: With dead ends: 247 [2022-11-02 20:36:24,485 INFO L226 Difference]: Without dead ends: 160 [2022-11-02 20:36:24,485 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 [2022-11-02 20:36:24,487 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:24,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 305 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-02 20:36:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-11-02 20:36:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 157 states have internal predecessors, (223), 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) [2022-11-02 20:36:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 223 transitions. [2022-11-02 20:36:24,526 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 223 transitions. Word has length 48 [2022-11-02 20:36:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:24,527 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 223 transitions. [2022-11-02 20:36:24,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 223 transitions. [2022-11-02 20:36:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 20:36:24,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:24,528 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] [2022-11-02 20:36:24,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:36:24,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1589815569, now seen corresponding path program 1 times [2022-11-02 20:36:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423782061] [2022-11-02 20:36:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:24,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423782061] [2022-11-02 20:36:24,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423782061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:24,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:24,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847926867] [2022-11-02 20:36:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:24,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:24,788 INFO L87 Difference]: Start difference. First operand 158 states and 223 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) [2022-11-02 20:36:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:24,934 INFO L93 Difference]: Finished difference Result 478 states and 707 transitions. [2022-11-02 20:36:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:24,935 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 49 [2022-11-02 20:36:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:24,938 INFO L225 Difference]: With dead ends: 478 [2022-11-02 20:36:24,938 INFO L226 Difference]: Without dead ends: 394 [2022-11-02 20:36:24,944 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 [2022-11-02 20:36:24,948 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 304 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:24,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 542 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-02 20:36:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 251. [2022-11-02 20:36:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.4698795180722892) internal successors, (366), 250 states have internal predecessors, (366), 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) [2022-11-02 20:36:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 366 transitions. [2022-11-02 20:36:25,003 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 366 transitions. Word has length 49 [2022-11-02 20:36:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:25,005 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 366 transitions. [2022-11-02 20:36:25,005 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) [2022-11-02 20:36:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 366 transitions. [2022-11-02 20:36:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 20:36:25,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:25,013 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] [2022-11-02 20:36:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:36:25,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:25,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash 727047131, now seen corresponding path program 1 times [2022-11-02 20:36:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:25,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784096652] [2022-11-02 20:36:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:25,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784096652] [2022-11-02 20:36:25,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784096652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:25,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:25,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827809031] [2022-11-02 20:36:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:25,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:25,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:25,204 INFO L87 Difference]: Start difference. First operand 251 states and 366 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) [2022-11-02 20:36:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:25,365 INFO L93 Difference]: Finished difference Result 566 states and 842 transitions. [2022-11-02 20:36:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:25,366 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 49 [2022-11-02 20:36:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:25,368 INFO L225 Difference]: With dead ends: 566 [2022-11-02 20:36:25,370 INFO L226 Difference]: Without dead ends: 482 [2022-11-02 20:36:25,374 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 [2022-11-02 20:36:25,382 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 358 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:25,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 564 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-02 20:36:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 382. [2022-11-02 20:36:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 380 states have (on average 1.4894736842105263) internal successors, (566), 381 states have internal predecessors, (566), 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) [2022-11-02 20:36:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 566 transitions. [2022-11-02 20:36:25,432 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 566 transitions. Word has length 49 [2022-11-02 20:36:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:25,432 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 566 transitions. [2022-11-02 20:36:25,433 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) [2022-11-02 20:36:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 566 transitions. [2022-11-02 20:36:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 20:36:25,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:25,434 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] [2022-11-02 20:36:25,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:36:25,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:25,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:25,435 INFO L85 PathProgramCache]: Analyzing trace with hash 118541383, now seen corresponding path program 1 times [2022-11-02 20:36:25,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:25,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217913516] [2022-11-02 20:36:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:25,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:25,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217913516] [2022-11-02 20:36:25,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217913516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:25,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:25,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807852460] [2022-11-02 20:36:25,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:25,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:25,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:25,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:25,578 INFO L87 Difference]: Start difference. First operand 382 states and 566 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) [2022-11-02 20:36:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:25,741 INFO L93 Difference]: Finished difference Result 659 states and 985 transitions. [2022-11-02 20:36:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:25,742 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 49 [2022-11-02 20:36:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:25,744 INFO L225 Difference]: With dead ends: 659 [2022-11-02 20:36:25,744 INFO L226 Difference]: Without dead ends: 575 [2022-11-02 20:36:25,745 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 [2022-11-02 20:36:25,746 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 367 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:25,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 560 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-02 20:36:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 475. [2022-11-02 20:36:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4989429175475688) internal successors, (709), 474 states have internal predecessors, (709), 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) [2022-11-02 20:36:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 709 transitions. [2022-11-02 20:36:25,797 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 709 transitions. Word has length 49 [2022-11-02 20:36:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:25,797 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 709 transitions. [2022-11-02 20:36:25,797 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) [2022-11-02 20:36:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 709 transitions. [2022-11-02 20:36:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:36:25,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:25,799 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] [2022-11-02 20:36:25,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:36:25,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2078764873, now seen corresponding path program 1 times [2022-11-02 20:36:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:25,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940622670] [2022-11-02 20:36:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:25,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:25,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940622670] [2022-11-02 20:36:25,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940622670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:25,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:25,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:36:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34612250] [2022-11-02 20:36:25,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:25,965 INFO L87 Difference]: Start difference. First operand 475 states and 709 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-02 20:36:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:26,147 INFO L93 Difference]: Finished difference Result 928 states and 1395 transitions. [2022-11-02 20:36:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:26,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2022-11-02 20:36:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:26,150 INFO L225 Difference]: With dead ends: 928 [2022-11-02 20:36:26,151 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:36:26,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:26,155 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 380 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:26,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 82 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:36:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-11-02 20:36:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.477801268498943) internal successors, (699), 474 states have internal predecessors, (699), 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) [2022-11-02 20:36:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 699 transitions. [2022-11-02 20:36:26,219 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 699 transitions. Word has length 50 [2022-11-02 20:36:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:26,219 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 699 transitions. [2022-11-02 20:36:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-02 20:36:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 699 transitions. [2022-11-02 20:36:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:36:26,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:26,221 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] [2022-11-02 20:36:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:36:26,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1832903282, now seen corresponding path program 1 times [2022-11-02 20:36:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430488760] [2022-11-02 20:36:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:26,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430488760] [2022-11-02 20:36:26,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430488760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:26,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:26,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:36:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644044429] [2022-11-02 20:36:26,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:26,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:26,325 INFO L87 Difference]: Start difference. First operand 475 states and 699 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-11-02 20:36:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:26,482 INFO L93 Difference]: Finished difference Result 924 states and 1371 transitions. [2022-11-02 20:36:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:26,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 51 [2022-11-02 20:36:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:26,485 INFO L225 Difference]: With dead ends: 924 [2022-11-02 20:36:26,485 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:36:26,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:26,487 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 362 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:26,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 90 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:36:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-11-02 20:36:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4566596194503172) internal successors, (689), 474 states have internal predecessors, (689), 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) [2022-11-02 20:36:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 689 transitions. [2022-11-02 20:36:26,561 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 689 transitions. Word has length 51 [2022-11-02 20:36:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:26,562 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 689 transitions. [2022-11-02 20:36:26,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-11-02 20:36:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 689 transitions. [2022-11-02 20:36:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:36:26,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:26,564 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] [2022-11-02 20:36:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:36:26,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1624812893, now seen corresponding path program 1 times [2022-11-02 20:36:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:26,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317245313] [2022-11-02 20:36:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:26,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317245313] [2022-11-02 20:36:26,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317245313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:26,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:26,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:36:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78464019] [2022-11-02 20:36:26,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:26,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:26,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:26,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:26,665 INFO L87 Difference]: Start difference. First operand 475 states and 689 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-02 20:36:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:26,838 INFO L93 Difference]: Finished difference Result 920 states and 1347 transitions. [2022-11-02 20:36:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-11-02 20:36:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:26,841 INFO L225 Difference]: With dead ends: 920 [2022-11-02 20:36:26,841 INFO L226 Difference]: Without dead ends: 475 [2022-11-02 20:36:26,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:26,843 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 344 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:26,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 98 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:36:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-02 20:36:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-11-02 20:36:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4355179704016914) internal successors, (679), 474 states have internal predecessors, (679), 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) [2022-11-02 20:36:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 679 transitions. [2022-11-02 20:36:26,926 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 679 transitions. Word has length 52 [2022-11-02 20:36:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:26,927 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 679 transitions. [2022-11-02 20:36:26,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-02 20:36:26,927 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 679 transitions. [2022-11-02 20:36:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 20:36:26,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:26,933 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] [2022-11-02 20:36:26,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:36:26,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:26,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1423750650, now seen corresponding path program 1 times [2022-11-02 20:36:26,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550688789] [2022-11-02 20:36:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:26,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:27,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:27,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550688789] [2022-11-02 20:36:27,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550688789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:27,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:27,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:36:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057353889] [2022-11-02 20:36:27,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:27,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:36:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:36:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:36:27,417 INFO L87 Difference]: Start difference. First operand 475 states and 679 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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) [2022-11-02 20:36:28,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:28,309 INFO L93 Difference]: Finished difference Result 1299 states and 1873 transitions. [2022-11-02 20:36:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:36:28,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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 53 [2022-11-02 20:36:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:28,330 INFO L225 Difference]: With dead ends: 1299 [2022-11-02 20:36:28,330 INFO L226 Difference]: Without dead ends: 901 [2022-11-02 20:36:28,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:36:28,331 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 738 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:28,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 374 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:36:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-02 20:36:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 475. [2022-11-02 20:36:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.427061310782241) internal successors, (675), 474 states have internal predecessors, (675), 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) [2022-11-02 20:36:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 675 transitions. [2022-11-02 20:36:28,440 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 675 transitions. Word has length 53 [2022-11-02 20:36:28,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:28,440 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 675 transitions. [2022-11-02 20:36:28,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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) [2022-11-02 20:36:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 675 transitions. [2022-11-02 20:36:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 20:36:28,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:28,442 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] [2022-11-02 20:36:28,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:36:28,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash 232050318, now seen corresponding path program 1 times [2022-11-02 20:36:28,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:28,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848084294] [2022-11-02 20:36:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:28,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:28,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:28,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848084294] [2022-11-02 20:36:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848084294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:28,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:36:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57362068] [2022-11-02 20:36:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:28,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:36:28,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:36:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:36:28,788 INFO L87 Difference]: Start difference. First operand 475 states and 675 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2022-11-02 20:36:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:29,506 INFO L93 Difference]: Finished difference Result 1286 states and 1857 transitions. [2022-11-02 20:36:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:36:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2022-11-02 20:36:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:29,511 INFO L225 Difference]: With dead ends: 1286 [2022-11-02 20:36:29,511 INFO L226 Difference]: Without dead ends: 873 [2022-11-02 20:36:29,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:36:29,513 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 732 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:29,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 297 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:36:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-11-02 20:36:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 475. [2022-11-02 20:36:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4249471458773784) internal successors, (674), 474 states have internal predecessors, (674), 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) [2022-11-02 20:36:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 674 transitions. [2022-11-02 20:36:29,654 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 674 transitions. Word has length 53 [2022-11-02 20:36:29,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:29,654 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 674 transitions. [2022-11-02 20:36:29,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2022-11-02 20:36:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 674 transitions. [2022-11-02 20:36:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:36:29,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:29,655 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] [2022-11-02 20:36:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:36:29,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 563944451, now seen corresponding path program 1 times [2022-11-02 20:36:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:29,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724766879] [2022-11-02 20:36:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:30,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:30,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724766879] [2022-11-02 20:36:30,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724766879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:30,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:30,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:36:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116305021] [2022-11-02 20:36:30,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:30,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:36:30,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:30,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:36:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:36:30,282 INFO L87 Difference]: Start difference. First operand 475 states and 674 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 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) [2022-11-02 20:36:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:31,921 INFO L93 Difference]: Finished difference Result 1620 states and 2320 transitions. [2022-11-02 20:36:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:36:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 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 [2022-11-02 20:36:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:31,926 INFO L225 Difference]: With dead ends: 1620 [2022-11-02 20:36:31,926 INFO L226 Difference]: Without dead ends: 1212 [2022-11-02 20:36:31,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:36:31,930 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 654 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:31,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 623 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:36:31,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-11-02 20:36:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 475. [2022-11-02 20:36:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4207188160676534) internal successors, (672), 474 states have internal predecessors, (672), 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) [2022-11-02 20:36:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 672 transitions. [2022-11-02 20:36:32,130 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 672 transitions. Word has length 54 [2022-11-02 20:36:32,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:32,132 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 672 transitions. [2022-11-02 20:36:32,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 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) [2022-11-02 20:36:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 672 transitions. [2022-11-02 20:36:32,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:36:32,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:32,133 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] [2022-11-02 20:36:32,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:36:32,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1521991144, now seen corresponding path program 1 times [2022-11-02 20:36:32,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:32,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587385801] [2022-11-02 20:36:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:32,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:33,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587385801] [2022-11-02 20:36:33,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587385801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:33,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:33,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 20:36:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466721975] [2022-11-02 20:36:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:33,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:36:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:33,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:36:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:36:33,297 INFO L87 Difference]: Start difference. First operand 475 states and 672 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-11-02 20:36:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:36,985 INFO L93 Difference]: Finished difference Result 2595 states and 3768 transitions. [2022-11-02 20:36:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:36:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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 55 [2022-11-02 20:36:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:36,993 INFO L225 Difference]: With dead ends: 2595 [2022-11-02 20:36:36,994 INFO L226 Difference]: Without dead ends: 2414 [2022-11-02 20:36:36,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=328, Invalid=1478, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 20:36:36,996 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1023 mSDsluCounter, 3330 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:36,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 3608 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:36:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-11-02 20:36:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 485. [2022-11-02 20:36:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 483 states have (on average 1.4161490683229814) internal successors, (684), 484 states have internal predecessors, (684), 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) [2022-11-02 20:36:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2022-11-02 20:36:37,263 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 55 [2022-11-02 20:36:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:37,264 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2022-11-02 20:36:37,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-11-02 20:36:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2022-11-02 20:36:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:36:37,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:37,265 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] [2022-11-02 20:36:37,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:36:37,266 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:37,266 INFO L85 PathProgramCache]: Analyzing trace with hash 822613335, now seen corresponding path program 1 times [2022-11-02 20:36:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:37,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597178835] [2022-11-02 20:36:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:37,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597178835] [2022-11-02 20:36:38,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597178835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:38,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:38,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 20:36:38,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884848657] [2022-11-02 20:36:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:38,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:36:38,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:36:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:36:38,388 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-11-02 20:36:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:42,344 INFO L93 Difference]: Finished difference Result 3168 states and 4615 transitions. [2022-11-02 20:36:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:36:42,345 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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 55 [2022-11-02 20:36:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:42,355 INFO L225 Difference]: With dead ends: 3168 [2022-11-02 20:36:42,355 INFO L226 Difference]: Without dead ends: 2993 [2022-11-02 20:36:42,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:36:42,358 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1657 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:42,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 4107 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:36:42,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-11-02 20:36:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 490. [2022-11-02 20:36:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 488 states have (on average 1.4139344262295082) internal successors, (690), 489 states have internal predecessors, (690), 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) [2022-11-02 20:36:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 690 transitions. [2022-11-02 20:36:42,585 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 690 transitions. Word has length 55 [2022-11-02 20:36:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:42,586 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 690 transitions. [2022-11-02 20:36:42,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-11-02 20:36:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 690 transitions. [2022-11-02 20:36:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:36:42,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:42,587 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] [2022-11-02 20:36:42,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:36:42,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1171871732, now seen corresponding path program 1 times [2022-11-02 20:36:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:42,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903426840] [2022-11-02 20:36:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:42,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:43,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903426840] [2022-11-02 20:36:43,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903426840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:43,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:43,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:36:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091194680] [2022-11-02 20:36:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:36:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:36:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:36:43,230 INFO L87 Difference]: Start difference. First operand 490 states and 690 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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) [2022-11-02 20:36:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:45,793 INFO L93 Difference]: Finished difference Result 1841 states and 2668 transitions. [2022-11-02 20:36:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:36:45,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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 55 [2022-11-02 20:36:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:45,798 INFO L225 Difference]: With dead ends: 1841 [2022-11-02 20:36:45,798 INFO L226 Difference]: Without dead ends: 1645 [2022-11-02 20:36:45,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:36:45,800 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 920 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:45,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1555 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:36:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-11-02 20:36:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 468. [2022-11-02 20:36:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 466 states have (on average 1.4163090128755365) internal successors, (660), 467 states have internal predecessors, (660), 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) [2022-11-02 20:36:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 660 transitions. [2022-11-02 20:36:46,033 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 660 transitions. Word has length 55 [2022-11-02 20:36:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:46,033 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 660 transitions. [2022-11-02 20:36:46,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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) [2022-11-02 20:36:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 660 transitions. [2022-11-02 20:36:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:36:46,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:46,035 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] [2022-11-02 20:36:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:36:46,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:46,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 380290649, now seen corresponding path program 1 times [2022-11-02 20:36:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:46,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907392528] [2022-11-02 20:36:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:46,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:46,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907392528] [2022-11-02 20:36:46,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907392528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:46,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:46,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:36:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134900975] [2022-11-02 20:36:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:46,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:36:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:36:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:36:46,615 INFO L87 Difference]: Start difference. First operand 468 states and 660 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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) [2022-11-02 20:36:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:49,577 INFO L93 Difference]: Finished difference Result 2525 states and 3693 transitions. [2022-11-02 20:36:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:36:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 55 [2022-11-02 20:36:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:49,584 INFO L225 Difference]: With dead ends: 2525 [2022-11-02 20:36:49,584 INFO L226 Difference]: Without dead ends: 2334 [2022-11-02 20:36:49,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:36:49,586 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 967 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:49,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 1117 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:36:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-11-02 20:36:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 446. [2022-11-02 20:36:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4211711711711712) internal successors, (631), 445 states have internal predecessors, (631), 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) [2022-11-02 20:36:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 631 transitions. [2022-11-02 20:36:49,953 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 631 transitions. Word has length 55 [2022-11-02 20:36:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:49,953 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 631 transitions. [2022-11-02 20:36:49,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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) [2022-11-02 20:36:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 631 transitions. [2022-11-02 20:36:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:36:49,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:49,954 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] [2022-11-02 20:36:49,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:36:49,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:49,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1258334466, now seen corresponding path program 1 times [2022-11-02 20:36:49,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:49,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874346573] [2022-11-02 20:36:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:51,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874346573] [2022-11-02 20:36:51,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874346573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:51,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:51,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 20:36:51,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886251060] [2022-11-02 20:36:51,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:51,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:36:51,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:36:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:36:51,566 INFO L87 Difference]: Start difference. First operand 446 states and 631 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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) [2022-11-02 20:36:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:58,628 INFO L93 Difference]: Finished difference Result 3721 states and 5464 transitions. [2022-11-02 20:36:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:36:58,628 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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 [2022-11-02 20:36:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:58,639 INFO L225 Difference]: With dead ends: 3721 [2022-11-02 20:36:58,640 INFO L226 Difference]: Without dead ends: 3546 [2022-11-02 20:36:58,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 20:36:58,642 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1493 mSDsluCounter, 4831 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:58,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 5196 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:36:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-11-02 20:36:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 447. [2022-11-02 20:36:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 445 states have (on average 1.4202247191011237) internal successors, (632), 446 states have internal predecessors, (632), 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) [2022-11-02 20:36:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 632 transitions. [2022-11-02 20:36:59,067 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 632 transitions. Word has length 56 [2022-11-02 20:36:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:59,067 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 632 transitions. [2022-11-02 20:36:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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) [2022-11-02 20:36:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 632 transitions. [2022-11-02 20:36:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:36:59,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:59,068 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] [2022-11-02 20:36:59,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:36:59,069 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1179705887, now seen corresponding path program 1 times [2022-11-02 20:36:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:59,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055192819] [2022-11-02 20:36:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:59,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:59,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055192819] [2022-11-02 20:36:59,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055192819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:59,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:59,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:36:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020194280] [2022-11-02 20:36:59,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:36:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:36:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:36:59,653 INFO L87 Difference]: Start difference. First operand 447 states and 632 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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) [2022-11-02 20:37:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:01,946 INFO L93 Difference]: Finished difference Result 1754 states and 2559 transitions. [2022-11-02 20:37:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:37:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 [2022-11-02 20:37:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:01,951 INFO L225 Difference]: With dead ends: 1754 [2022-11-02 20:37:01,951 INFO L226 Difference]: Without dead ends: 1579 [2022-11-02 20:37:01,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:37:01,953 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 662 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:01,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1339 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:37:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2022-11-02 20:37:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 428. [2022-11-02 20:37:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.4285714285714286) internal successors, (610), 427 states have internal predecessors, (610), 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) [2022-11-02 20:37:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 610 transitions. [2022-11-02 20:37:02,304 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 610 transitions. Word has length 56 [2022-11-02 20:37:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:02,305 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 610 transitions. [2022-11-02 20:37:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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) [2022-11-02 20:37:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 610 transitions. [2022-11-02 20:37:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 20:37:02,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:02,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:37:02,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1531780676, now seen corresponding path program 1 times [2022-11-02 20:37:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801189845] [2022-11-02 20:37:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:02,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801189845] [2022-11-02 20:37:02,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801189845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:02,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:02,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:37:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644538231] [2022-11-02 20:37:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:02,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:37:02,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:37:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:37:02,360 INFO L87 Difference]: Start difference. First operand 428 states and 610 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-02 20:37:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:03,275 INFO L93 Difference]: Finished difference Result 1112 states and 1613 transitions. [2022-11-02 20:37:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:37:03,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-11-02 20:37:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:03,278 INFO L225 Difference]: With dead ends: 1112 [2022-11-02 20:37:03,279 INFO L226 Difference]: Without dead ends: 741 [2022-11-02 20:37:03,279 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 [2022-11-02 20:37:03,280 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:03,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 189 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-02 20:37:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 730. [2022-11-02 20:37:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 1.412894375857339) internal successors, (1030), 729 states have internal predecessors, (1030), 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) [2022-11-02 20:37:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1030 transitions. [2022-11-02 20:37:03,911 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1030 transitions. Word has length 75 [2022-11-02 20:37:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:03,911 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1030 transitions. [2022-11-02 20:37:03,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-02 20:37:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1030 transitions. [2022-11-02 20:37:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:37:03,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:03,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:03,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:37:03,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 241252331, now seen corresponding path program 1 times [2022-11-02 20:37:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:03,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428921871] [2022-11-02 20:37:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:04,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:04,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428921871] [2022-11-02 20:37:04,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428921871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:04,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:04,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:37:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808969074] [2022-11-02 20:37:04,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:04,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:37:04,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:04,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:37:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:37:04,012 INFO L87 Difference]: Start difference. First operand 730 states and 1030 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-11-02 20:37:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:05,076 INFO L93 Difference]: Finished difference Result 2004 states and 2844 transitions. [2022-11-02 20:37:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:37:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-11-02 20:37:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:05,083 INFO L225 Difference]: With dead ends: 2004 [2022-11-02 20:37:05,083 INFO L226 Difference]: Without dead ends: 1331 [2022-11-02 20:37:05,084 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 [2022-11-02 20:37:05,085 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 51 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:05,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2022-11-02 20:37:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1257. [2022-11-02 20:37:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.4052547770700636) internal successors, (1765), 1256 states have internal predecessors, (1765), 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) [2022-11-02 20:37:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1765 transitions. [2022-11-02 20:37:05,946 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1765 transitions. Word has length 76 [2022-11-02 20:37:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:05,947 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1765 transitions. [2022-11-02 20:37:05,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-11-02 20:37:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1765 transitions. [2022-11-02 20:37:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:37:05,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:05,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:05,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:37:05,948 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1306565925, now seen corresponding path program 1 times [2022-11-02 20:37:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:05,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863154743] [2022-11-02 20:37:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:06,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:06,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863154743] [2022-11-02 20:37:06,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863154743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:06,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:06,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:37:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002963150] [2022-11-02 20:37:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:37:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:37:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:37:06,056 INFO L87 Difference]: Start difference. First operand 1257 states and 1765 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-11-02 20:37:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:08,296 INFO L93 Difference]: Finished difference Result 3513 states and 4923 transitions. [2022-11-02 20:37:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:37:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-11-02 20:37:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:08,305 INFO L225 Difference]: With dead ends: 3513 [2022-11-02 20:37:08,306 INFO L226 Difference]: Without dead ends: 2313 [2022-11-02 20:37:08,307 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 [2022-11-02 20:37:08,308 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:08,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 255 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2022-11-02 20:37:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2167. [2022-11-02 20:37:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 1.3855032317636196) internal successors, (3001), 2166 states have internal predecessors, (3001), 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) [2022-11-02 20:37:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3001 transitions. [2022-11-02 20:37:10,220 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3001 transitions. Word has length 77 [2022-11-02 20:37:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:10,220 INFO L495 AbstractCegarLoop]: Abstraction has 2167 states and 3001 transitions. [2022-11-02 20:37:10,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-11-02 20:37:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3001 transitions. [2022-11-02 20:37:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:37:10,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:10,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:10,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:37:10,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1695604898, now seen corresponding path program 1 times [2022-11-02 20:37:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:10,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419230245] [2022-11-02 20:37:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:10,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419230245] [2022-11-02 20:37:10,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419230245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:10,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:10,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:37:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012648269] [2022-11-02 20:37:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:10,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:37:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:37:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:37:10,414 INFO L87 Difference]: Start difference. First operand 2167 states and 3001 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2022-11-02 20:37:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:14,953 INFO L93 Difference]: Finished difference Result 3858 states and 5300 transitions. [2022-11-02 20:37:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:37:14,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2022-11-02 20:37:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:14,963 INFO L225 Difference]: With dead ends: 3858 [2022-11-02 20:37:14,964 INFO L226 Difference]: Without dead ends: 3856 [2022-11-02 20:37:14,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:14,966 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 197 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:14,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 655 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2022-11-02 20:37:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 2263. [2022-11-02 20:37:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.3603006189213085) internal successors, (3077), 2262 states have internal predecessors, (3077), 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) [2022-11-02 20:37:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3077 transitions. [2022-11-02 20:37:17,441 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3077 transitions. Word has length 78 [2022-11-02 20:37:17,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:17,442 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3077 transitions. [2022-11-02 20:37:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2022-11-02 20:37:17,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3077 transitions. [2022-11-02 20:37:17,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:37:17,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:17,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:17,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:37:17,444 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1415916470, now seen corresponding path program 1 times [2022-11-02 20:37:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:17,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455555252] [2022-11-02 20:37:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:17,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:17,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455555252] [2022-11-02 20:37:17,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455555252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:17,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:17,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:37:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375584892] [2022-11-02 20:37:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:37:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:37:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:37:17,539 INFO L87 Difference]: Start difference. First operand 2263 states and 3077 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-02 20:37:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:21,287 INFO L93 Difference]: Finished difference Result 5883 states and 7991 transitions. [2022-11-02 20:37:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:37:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-11-02 20:37:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:21,295 INFO L225 Difference]: With dead ends: 5883 [2022-11-02 20:37:21,295 INFO L226 Difference]: Without dead ends: 3677 [2022-11-02 20:37:21,298 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 [2022-11-02 20:37:21,299 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:21,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2022-11-02 20:37:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3387. [2022-11-02 20:37:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3411104548139396) internal successors, (4541), 3386 states have internal predecessors, (4541), 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) [2022-11-02 20:37:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4541 transitions. [2022-11-02 20:37:24,342 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4541 transitions. Word has length 79 [2022-11-02 20:37:24,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:24,342 INFO L495 AbstractCegarLoop]: Abstraction has 3387 states and 4541 transitions. [2022-11-02 20:37:24,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-02 20:37:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4541 transitions. [2022-11-02 20:37:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-02 20:37:24,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:24,345 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:24,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:37:24,345 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1940322908, now seen corresponding path program 1 times [2022-11-02 20:37:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:24,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496694527] [2022-11-02 20:37:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:24,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496694527] [2022-11-02 20:37:24,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496694527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:24,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:24,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:37:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488952038] [2022-11-02 20:37:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:24,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:37:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:37:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:37:24,430 INFO L87 Difference]: Start difference. First operand 3387 states and 4541 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-11-02 20:37:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:27,663 INFO L93 Difference]: Finished difference Result 6719 states and 9023 transitions. [2022-11-02 20:37:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:37:27,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2022-11-02 20:37:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:27,670 INFO L225 Difference]: With dead ends: 6719 [2022-11-02 20:37:27,670 INFO L226 Difference]: Without dead ends: 3389 [2022-11-02 20:37:27,673 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 [2022-11-02 20:37:27,674 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 57 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:27,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 233 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:27,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-11-02 20:37:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3387. [2022-11-02 20:37:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3198464264619019) internal successors, (4469), 3386 states have internal predecessors, (4469), 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) [2022-11-02 20:37:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4469 transitions. [2022-11-02 20:37:31,360 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4469 transitions. Word has length 100 [2022-11-02 20:37:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:31,360 INFO L495 AbstractCegarLoop]: Abstraction has 3387 states and 4469 transitions. [2022-11-02 20:37:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-11-02 20:37:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4469 transitions. [2022-11-02 20:37:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-02 20:37:31,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:31,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:37:31,363 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1124551470, now seen corresponding path program 1 times [2022-11-02 20:37:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100947006] [2022-11-02 20:37:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:31,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100947006] [2022-11-02 20:37:31,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100947006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918678605] [2022-11-02 20:37:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:31,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:31,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:31,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:37:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:32,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:37:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:33,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918678605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:35,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:37:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-11-02 20:37:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71471218] [2022-11-02 20:37:35,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:37:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:37:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:37:35,165 INFO L87 Difference]: Start difference. First operand 3387 states and 4469 transitions. Second operand has 28 states, 28 states have (on average 9.035714285714286) internal successors, (253), 27 states have internal predecessors, (253), 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) [2022-11-02 20:37:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:56,777 INFO L93 Difference]: Finished difference Result 21758 states and 28391 transitions. [2022-11-02 20:37:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:37:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.035714285714286) internal successors, (253), 27 states have internal predecessors, (253), 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 100 [2022-11-02 20:37:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:56,819 INFO L225 Difference]: With dead ends: 21758 [2022-11-02 20:37:56,819 INFO L226 Difference]: Without dead ends: 18428 [2022-11-02 20:37:56,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1274, Invalid=3148, Unknown=0, NotChecked=0, Total=4422 [2022-11-02 20:37:56,828 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2102 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 1521 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:37:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18428 states. [2022-11-02 20:38:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18428 to 8125. [2022-11-02 20:38:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8125 states, 8124 states have (on average 1.3195470211718365) internal successors, (10720), 8124 states have internal predecessors, (10720), 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) [2022-11-02 20:38:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8125 states to 8125 states and 10720 transitions. [2022-11-02 20:38:06,099 INFO L78 Accepts]: Start accepts. Automaton has 8125 states and 10720 transitions. Word has length 100 [2022-11-02 20:38:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:06,100 INFO L495 AbstractCegarLoop]: Abstraction has 8125 states and 10720 transitions. [2022-11-02 20:38:06,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.035714285714286) internal successors, (253), 27 states have internal predecessors, (253), 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) [2022-11-02 20:38:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 8125 states and 10720 transitions. [2022-11-02 20:38:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:38:06,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:06,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:06,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:06,320 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash -13722873, now seen corresponding path program 1 times [2022-11-02 20:38:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315820609] [2022-11-02 20:38:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:06,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:06,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315820609] [2022-11-02 20:38:06,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315820609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:06,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081496474] [2022-11-02 20:38:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:06,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:06,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:06,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:38:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:38:06,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:07,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:08,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081496474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:08,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:08,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2022-11-02 20:38:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672074659] [2022-11-02 20:38:08,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:08,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:38:08,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:38:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:38:08,781 INFO L87 Difference]: Start difference. First operand 8125 states and 10720 transitions. Second operand has 31 states, 31 states have (on average 9.096774193548388) internal successors, (282), 30 states have internal predecessors, (282), 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) [2022-11-02 20:39:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:40,996 INFO L93 Difference]: Finished difference Result 67494 states and 86768 transitions. [2022-11-02 20:39:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-11-02 20:39:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.096774193548388) internal successors, (282), 30 states have internal predecessors, (282), 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 101 [2022-11-02 20:39:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:41,131 INFO L225 Difference]: With dead ends: 67494 [2022-11-02 20:39:41,132 INFO L226 Difference]: Without dead ends: 64164 [2022-11-02 20:39:41,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19631 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=9154, Invalid=42148, Unknown=0, NotChecked=0, Total=51302 [2022-11-02 20:39:41,168 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 4829 mSDsluCounter, 3603 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 3464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:41,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4829 Valid, 3817 Invalid, 3464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 3141 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-02 20:39:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64164 states. [2022-11-02 20:39:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64164 to 8114. [2022-11-02 20:39:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8114 states, 8113 states have (on average 1.3198570195981758) internal successors, (10708), 8113 states have internal predecessors, (10708), 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) [2022-11-02 20:39:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8114 states to 8114 states and 10708 transitions. [2022-11-02 20:39:52,246 INFO L78 Accepts]: Start accepts. Automaton has 8114 states and 10708 transitions. Word has length 101 [2022-11-02 20:39:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:52,247 INFO L495 AbstractCegarLoop]: Abstraction has 8114 states and 10708 transitions. [2022-11-02 20:39:52,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.096774193548388) internal successors, (282), 30 states have internal predecessors, (282), 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) [2022-11-02 20:39:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 8114 states and 10708 transitions. [2022-11-02 20:39:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:39:52,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:52,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:52,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:39:52,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 20:39:52,452 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:52,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1589646215, now seen corresponding path program 1 times [2022-11-02 20:39:52,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:52,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092453666] [2022-11-02 20:39:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:52,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:52,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:52,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092453666] [2022-11-02 20:39:52,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092453666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773793058] [2022-11-02 20:39:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:52,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:52,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:52,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cb42b3-fbb7-417d-92ab-e10be54f122e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:39:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-02 20:39:53,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:55,572 INFO L328 TraceCheckSpWp]: Computing backward predicates...