./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8 --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 e2c31a6d36722edb2a8cb670626aeeca5f235139fff7eadbabd05db5fa398d5d --- 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-e04fb08 [2022-11-16 11:42:51,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:42:51,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:42:51,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:42:51,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:42:51,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:42:51,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:42:51,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:42:51,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:42:51,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:42:51,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:42:51,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:42:51,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:42:51,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:42:51,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:42:51,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:42:51,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:42:51,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:42:51,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:42:51,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:42:51,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:42:51,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:42:51,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:42:51,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:42:51,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:42:51,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:42:51,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:42:51,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:42:51,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:42:51,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:42:51,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:42:51,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:42:51,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:42:51,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:42:51,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:42:51,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:42:51,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:42:51,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:42:51,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:42:51,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:42:51,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:42:51,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:42:51,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:42:51,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:42:51,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:42:51,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:42:51,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:42:51,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:42:51,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:42:51,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:42:51,248 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:42:51,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:42:51,250 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:42:51,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:42:51,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:42:51,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:42:51,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:42:51,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:42:51,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:42:51,252 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:42:51,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:42:51,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:42:51,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:42:51,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:42:51,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:42:51,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:42:51,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:42:51,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:42:51,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:42:51,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:42:51,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:42:51,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:42:51,259 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:42:51,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:42:51,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:42:51,261 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_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2c31a6d36722edb2a8cb670626aeeca5f235139fff7eadbabd05db5fa398d5d [2022-11-16 11:42:51,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:42:51,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:42:51,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:42:51,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:42:51,713 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:42:51,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-16 11:42:51,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/data/0b8bd1c4f/a443a89b7fdf4bcbb32938f0ccd729aa/FLAGd88489354 [2022-11-16 11:42:52,474 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:42:52,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-16 11:42:52,500 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/data/0b8bd1c4f/a443a89b7fdf4bcbb32938f0ccd729aa/FLAGd88489354 [2022-11-16 11:42:52,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/data/0b8bd1c4f/a443a89b7fdf4bcbb32938f0ccd729aa [2022-11-16 11:42:52,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:42:52,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:42:52,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:42:52,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:42:52,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:42:52,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:42:52" (1/1) ... [2022-11-16 11:42:52,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f3250a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:52, skipping insertion in model container [2022-11-16 11:42:52,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:42:52" (1/1) ... [2022-11-16 11:42:52,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:42:52,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:42:53,334 WARN L229 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_fa514ef6-adc6-47e7-9278-6d46150a82bf/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14519,14532] [2022-11-16 11:42:53,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:42:53,455 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:42:53,593 WARN L229 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_fa514ef6-adc6-47e7-9278-6d46150a82bf/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14519,14532] [2022-11-16 11:42:53,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:42:53,717 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:42:53,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53 WrapperNode [2022-11-16 11:42:53,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:42:53,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:42:53,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:42:53,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:42:53,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,860 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1183 [2022-11-16 11:42:53,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:42:53,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:42:53,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:42:53,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:42:53,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:42:53,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:42:53,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:42:53,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:42:53,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (1/1) ... [2022-11-16 11:42:53,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:42:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:42:54,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:42:54,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa514ef6-adc6-47e7-9278-6d46150a82bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:42:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:42:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:42:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:42:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:42:54,337 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:42:54,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:42:55,844 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:42:55,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:42:55,859 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:42:55,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:42:55 BoogieIcfgContainer [2022-11-16 11:42:55,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:42:55,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:42:55,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:42:55,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:42:55,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:42:52" (1/3) ... [2022-11-16 11:42:55,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bcad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:42:55, skipping insertion in model container [2022-11-16 11:42:55,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:42:53" (2/3) ... [2022-11-16 11:42:55,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bcad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:42:55, skipping insertion in model container [2022-11-16 11:42:55,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:42:55" (3/3) ... [2022-11-16 11:42:55,876 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-16 11:42:55,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:42:55,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:42:55,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:42:56,002 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;@19c6eb89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:42:56,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:42:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7854785478547854) internal successors, (541), 304 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 11:42:56,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:56,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:56,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 574427721, now seen corresponding path program 1 times [2022-11-16 11:42:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:56,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001771126] [2022-11-16 11:42:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:56,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:56,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:56,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001771126] [2022-11-16 11:42:56,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001771126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:56,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:56,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:42:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187166516] [2022-11-16 11:42:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:56,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:42:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:42:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:56,982 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7854785478547854) internal successors, (541), 304 states have internal predecessors, (541), 0 states have call successors, (0), 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 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:57,181 INFO L93 Difference]: Finished difference Result 612 states and 1078 transitions. [2022-11-16 11:42:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:42:57,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-11-16 11:42:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:57,200 INFO L225 Difference]: With dead ends: 612 [2022-11-16 11:42:57,201 INFO L226 Difference]: Without dead ends: 495 [2022-11-16 11:42:57,205 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 [2022-11-16 11:42:57,209 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 361 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:57,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 895 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:42:57,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-16 11:42:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2022-11-16 11:42:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4959349593495934) internal successors, (736), 492 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 736 transitions. [2022-11-16 11:42:57,305 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 736 transitions. Word has length 144 [2022-11-16 11:42:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:57,306 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 736 transitions. [2022-11-16 11:42:57,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 736 transitions. [2022-11-16 11:42:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 11:42:57,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:57,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:57,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:42:57,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash 505056235, now seen corresponding path program 1 times [2022-11-16 11:42:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:57,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619848294] [2022-11-16 11:42:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:57,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:57,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619848294] [2022-11-16 11:42:57,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619848294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:57,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:57,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:42:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363100817] [2022-11-16 11:42:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:42:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:42:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:57,577 INFO L87 Difference]: Start difference. First operand 493 states and 736 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:57,749 INFO L93 Difference]: Finished difference Result 1063 states and 1633 transitions. [2022-11-16 11:42:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:42:57,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-11-16 11:42:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:57,759 INFO L225 Difference]: With dead ends: 1063 [2022-11-16 11:42:57,760 INFO L226 Difference]: Without dead ends: 865 [2022-11-16 11:42:57,768 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 [2022-11-16 11:42:57,770 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 274 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:57,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 726 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:42:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-11-16 11:42:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 863. [2022-11-16 11:42:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 862 states have (on average 1.5081206496519721) internal successors, (1300), 862 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1300 transitions. [2022-11-16 11:42:57,874 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1300 transitions. Word has length 144 [2022-11-16 11:42:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:57,877 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1300 transitions. [2022-11-16 11:42:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1300 transitions. [2022-11-16 11:42:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 11:42:57,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:57,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:42:57,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash 459957428, now seen corresponding path program 1 times [2022-11-16 11:42:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:57,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423079888] [2022-11-16 11:42:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:58,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423079888] [2022-11-16 11:42:58,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423079888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:58,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:58,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:42:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665861029] [2022-11-16 11:42:58,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:58,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:42:58,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:58,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:42:58,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:42:58,585 INFO L87 Difference]: Start difference. First operand 863 states and 1300 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:58,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:58,868 INFO L93 Difference]: Finished difference Result 2524 states and 3793 transitions. [2022-11-16 11:42:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:42:58,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-11-16 11:42:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:58,876 INFO L225 Difference]: With dead ends: 2524 [2022-11-16 11:42:58,876 INFO L226 Difference]: Without dead ends: 1670 [2022-11-16 11:42:58,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:42:58,886 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 886 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:58,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1153 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:42:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-11-16 11:42:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1668. [2022-11-16 11:42:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1667 states have (on average 1.4913017396520696) internal successors, (2486), 1667 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2486 transitions. [2022-11-16 11:42:59,044 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2486 transitions. Word has length 144 [2022-11-16 11:42:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:59,044 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2486 transitions. [2022-11-16 11:42:59,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2486 transitions. [2022-11-16 11:42:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 11:42:59,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:59,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:59,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:42:59,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1789583768, now seen corresponding path program 1 times [2022-11-16 11:42:59,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:59,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760457332] [2022-11-16 11:42:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:59,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:59,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760457332] [2022-11-16 11:42:59,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760457332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:59,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:59,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:42:59,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643648331] [2022-11-16 11:42:59,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:59,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:42:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:42:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:59,152 INFO L87 Difference]: Start difference. First operand 1668 states and 2486 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:59,517 INFO L93 Difference]: Finished difference Result 4966 states and 7396 transitions. [2022-11-16 11:42:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:42:59,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-11-16 11:42:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:59,533 INFO L225 Difference]: With dead ends: 4966 [2022-11-16 11:42:59,533 INFO L226 Difference]: Without dead ends: 3326 [2022-11-16 11:42:59,536 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 [2022-11-16 11:42:59,538 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 432 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:59,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 944 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:42:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2022-11-16 11:42:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 1670. [2022-11-16 11:42:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1669 states have (on average 1.4907130017974835) internal successors, (2488), 1669 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2488 transitions. [2022-11-16 11:42:59,825 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2488 transitions. Word has length 145 [2022-11-16 11:42:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2488 transitions. [2022-11-16 11:42:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2488 transitions. [2022-11-16 11:42:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 11:42:59,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:59,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:59,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:42:59,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 338353525, now seen corresponding path program 1 times [2022-11-16 11:42:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378216986] [2022-11-16 11:42:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:00,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378216986] [2022-11-16 11:43:00,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378216986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:00,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:00,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:43:00,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121333745] [2022-11-16 11:43:00,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:00,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:00,405 INFO L87 Difference]: Start difference. First operand 1670 states and 2488 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:01,011 INFO L93 Difference]: Finished difference Result 4862 states and 7224 transitions. [2022-11-16 11:43:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-11-16 11:43:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:01,026 INFO L225 Difference]: With dead ends: 4862 [2022-11-16 11:43:01,026 INFO L226 Difference]: Without dead ends: 3222 [2022-11-16 11:43:01,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:01,033 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 870 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:01,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1134 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:43:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-11-16 11:43:01,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3220. [2022-11-16 11:43:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 3219 states have (on average 1.473749611680646) internal successors, (4744), 3219 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4744 transitions. [2022-11-16 11:43:01,499 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4744 transitions. Word has length 146 [2022-11-16 11:43:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:01,500 INFO L495 AbstractCegarLoop]: Abstraction has 3220 states and 4744 transitions. [2022-11-16 11:43:01,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4744 transitions. [2022-11-16 11:43:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 11:43:01,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:01,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:43:01,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1154912631, now seen corresponding path program 1 times [2022-11-16 11:43:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:01,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769937169] [2022-11-16 11:43:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:01,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:01,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:01,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769937169] [2022-11-16 11:43:01,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769937169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:01,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:01,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745706907] [2022-11-16 11:43:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:01,620 INFO L87 Difference]: Start difference. First operand 3220 states and 4744 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:02,504 INFO L93 Difference]: Finished difference Result 9584 states and 14112 transitions. [2022-11-16 11:43:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:02,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-11-16 11:43:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:02,528 INFO L225 Difference]: With dead ends: 9584 [2022-11-16 11:43:02,529 INFO L226 Difference]: Without dead ends: 6408 [2022-11-16 11:43:02,533 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 [2022-11-16 11:43:02,536 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 418 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:02,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1292 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:43:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6408 states. [2022-11-16 11:43:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6408 to 3224. [2022-11-16 11:43:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 1.4731616506360534) internal successors, (4748), 3223 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4748 transitions. [2022-11-16 11:43:03,084 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4748 transitions. Word has length 147 [2022-11-16 11:43:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 3224 states and 4748 transitions. [2022-11-16 11:43:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4748 transitions. [2022-11-16 11:43:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:43:03,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:03,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:03,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:43:03,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2056376896, now seen corresponding path program 1 times [2022-11-16 11:43:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:03,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129742505] [2022-11-16 11:43:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:03,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129742505] [2022-11-16 11:43:03,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129742505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:03,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:03,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999798261] [2022-11-16 11:43:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:03,223 INFO L87 Difference]: Start difference. First operand 3224 states and 4748 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:04,287 INFO L93 Difference]: Finished difference Result 8505 states and 12535 transitions. [2022-11-16 11:43:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 11:43:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:04,310 INFO L225 Difference]: With dead ends: 8505 [2022-11-16 11:43:04,311 INFO L226 Difference]: Without dead ends: 5589 [2022-11-16 11:43:04,315 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 [2022-11-16 11:43:04,319 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 362 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:04,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1216 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:43:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2022-11-16 11:43:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 5587. [2022-11-16 11:43:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5586 states have (on average 1.4516648764769065) internal successors, (8109), 5586 states have internal predecessors, (8109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8109 transitions. [2022-11-16 11:43:05,180 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8109 transitions. Word has length 148 [2022-11-16 11:43:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:05,181 INFO L495 AbstractCegarLoop]: Abstraction has 5587 states and 8109 transitions. [2022-11-16 11:43:05,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8109 transitions. [2022-11-16 11:43:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:43:05,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:05,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:05,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:43:05,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1182249245, now seen corresponding path program 1 times [2022-11-16 11:43:05,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:05,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747651861] [2022-11-16 11:43:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:05,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747651861] [2022-11-16 11:43:05,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747651861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:05,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:05,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271769535] [2022-11-16 11:43:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:43:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:43:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:05,733 INFO L87 Difference]: Start difference. First operand 5587 states and 8109 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:07,848 INFO L93 Difference]: Finished difference Result 16093 states and 23348 transitions. [2022-11-16 11:43:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:07,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 11:43:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:07,907 INFO L225 Difference]: With dead ends: 16093 [2022-11-16 11:43:07,907 INFO L226 Difference]: Without dead ends: 10543 [2022-11-16 11:43:07,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:07,917 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 917 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:07,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1528 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:43:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2022-11-16 11:43:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 10541. [2022-11-16 11:43:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10541 states, 10540 states have (on average 1.4364326375711576) internal successors, (15140), 10540 states have internal predecessors, (15140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10541 states to 10541 states and 15140 transitions. [2022-11-16 11:43:09,665 INFO L78 Accepts]: Start accepts. Automaton has 10541 states and 15140 transitions. Word has length 148 [2022-11-16 11:43:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 10541 states and 15140 transitions. [2022-11-16 11:43:09,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 10541 states and 15140 transitions. [2022-11-16 11:43:09,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:43:09,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:09,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:09,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:43:09,688 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1313778358, now seen corresponding path program 1 times [2022-11-16 11:43:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:09,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929187172] [2022-11-16 11:43:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929187172] [2022-11-16 11:43:10,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929187172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:10,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:10,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:43:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908015023] [2022-11-16 11:43:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:10,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:10,098 INFO L87 Difference]: Start difference. First operand 10541 states and 15140 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:12,087 INFO L93 Difference]: Finished difference Result 21315 states and 30516 transitions. [2022-11-16 11:43:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:12,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 11:43:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:12,113 INFO L225 Difference]: With dead ends: 21315 [2022-11-16 11:43:12,114 INFO L226 Difference]: Without dead ends: 10891 [2022-11-16 11:43:12,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:12,129 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 859 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:12,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1118 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:43:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2022-11-16 11:43:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 10749. [2022-11-16 11:43:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10749 states, 10748 states have (on average 1.4298474134722738) internal successors, (15368), 10748 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10749 states to 10749 states and 15368 transitions. [2022-11-16 11:43:13,704 INFO L78 Accepts]: Start accepts. Automaton has 10749 states and 15368 transitions. Word has length 148 [2022-11-16 11:43:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:13,704 INFO L495 AbstractCegarLoop]: Abstraction has 10749 states and 15368 transitions. [2022-11-16 11:43:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 10749 states and 15368 transitions. [2022-11-16 11:43:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 11:43:13,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:13,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:13,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:43:13,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash -618796246, now seen corresponding path program 1 times [2022-11-16 11:43:13,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:13,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493805648] [2022-11-16 11:43:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:13,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493805648] [2022-11-16 11:43:13,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493805648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:13,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:13,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:13,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700611515] [2022-11-16 11:43:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:13,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:13,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:13,809 INFO L87 Difference]: Start difference. First operand 10749 states and 15368 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:16,222 INFO L93 Difference]: Finished difference Result 31557 states and 45226 transitions. [2022-11-16 11:43:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:16,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-11-16 11:43:16,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:16,287 INFO L225 Difference]: With dead ends: 31557 [2022-11-16 11:43:16,287 INFO L226 Difference]: Without dead ends: 21373 [2022-11-16 11:43:16,305 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 [2022-11-16 11:43:16,306 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 404 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:16,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 955 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:43:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21373 states. [2022-11-16 11:43:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21373 to 10765. [2022-11-16 11:43:18,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10765 states, 10764 states have (on average 1.4292084726867336) internal successors, (15384), 10764 states have internal predecessors, (15384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 15384 transitions. [2022-11-16 11:43:18,929 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 15384 transitions. Word has length 149 [2022-11-16 11:43:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:18,929 INFO L495 AbstractCegarLoop]: Abstraction has 10765 states and 15384 transitions. [2022-11-16 11:43:18,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 15384 transitions. [2022-11-16 11:43:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:43:18,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:18,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:43:18,952 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash 696847479, now seen corresponding path program 1 times [2022-11-16 11:43:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:18,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019168473] [2022-11-16 11:43:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:19,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019168473] [2022-11-16 11:43:19,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019168473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:19,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:19,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:43:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442529340] [2022-11-16 11:43:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:19,400 INFO L87 Difference]: Start difference. First operand 10765 states and 15384 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:20,657 INFO L93 Difference]: Finished difference Result 21520 states and 30754 transitions. [2022-11-16 11:43:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-11-16 11:43:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:20,685 INFO L225 Difference]: With dead ends: 21520 [2022-11-16 11:43:20,685 INFO L226 Difference]: Without dead ends: 10763 [2022-11-16 11:43:20,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:20,701 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 65 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:20,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1362 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:43:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2022-11-16 11:43:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 10763. [2022-11-16 11:43:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10763 states, 10762 states have (on average 1.4291023973239174) internal successors, (15380), 10762 states have internal predecessors, (15380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10763 states to 10763 states and 15380 transitions. [2022-11-16 11:43:22,103 INFO L78 Accepts]: Start accepts. Automaton has 10763 states and 15380 transitions. Word has length 150 [2022-11-16 11:43:22,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:22,103 INFO L495 AbstractCegarLoop]: Abstraction has 10763 states and 15380 transitions. [2022-11-16 11:43:22,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 10763 states and 15380 transitions. [2022-11-16 11:43:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:43:22,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:22,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:22,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:43:22,121 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1219131811, now seen corresponding path program 1 times [2022-11-16 11:43:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:22,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805274691] [2022-11-16 11:43:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:22,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805274691] [2022-11-16 11:43:22,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805274691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:22,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:22,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305997832] [2022-11-16 11:43:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:22,239 INFO L87 Difference]: Start difference. First operand 10763 states and 15380 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:24,162 INFO L93 Difference]: Finished difference Result 25628 states and 36743 transitions. [2022-11-16 11:43:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-11-16 11:43:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:24,195 INFO L225 Difference]: With dead ends: 25628 [2022-11-16 11:43:24,196 INFO L226 Difference]: Without dead ends: 15980 [2022-11-16 11:43:24,208 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 [2022-11-16 11:43:24,208 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 368 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:24,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1140 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:43:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15980 states. [2022-11-16 11:43:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15980 to 15978. [2022-11-16 11:43:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15978 states, 15977 states have (on average 1.4053326657069538) internal successors, (22453), 15977 states have internal predecessors, (22453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15978 states to 15978 states and 22453 transitions. [2022-11-16 11:43:26,810 INFO L78 Accepts]: Start accepts. Automaton has 15978 states and 22453 transitions. Word has length 150 [2022-11-16 11:43:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:26,810 INFO L495 AbstractCegarLoop]: Abstraction has 15978 states and 22453 transitions. [2022-11-16 11:43:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:26,811 INFO L276 IsEmpty]: Start isEmpty. Operand 15978 states and 22453 transitions. [2022-11-16 11:43:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:43:26,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:26,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:26,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:43:26,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 204880059, now seen corresponding path program 1 times [2022-11-16 11:43:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:26,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309799951] [2022-11-16 11:43:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:26,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309799951] [2022-11-16 11:43:26,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309799951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:26,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:26,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:26,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797380814] [2022-11-16 11:43:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:26,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:43:26,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:43:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:43:26,993 INFO L87 Difference]: Start difference. First operand 15978 states and 22453 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:31,384 INFO L93 Difference]: Finished difference Result 42898 states and 61037 transitions. [2022-11-16 11:43:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:43:31,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-11-16 11:43:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:31,437 INFO L225 Difference]: With dead ends: 42898 [2022-11-16 11:43:31,437 INFO L226 Difference]: Without dead ends: 29628 [2022-11-16 11:43:31,450 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 [2022-11-16 11:43:31,451 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 296 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:31,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 760 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:43:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29628 states. [2022-11-16 11:43:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29628 to 29626. [2022-11-16 11:43:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29626 states, 29625 states have (on average 1.4053333333333333) internal successors, (41633), 29625 states have internal predecessors, (41633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29626 states to 29626 states and 41633 transitions. [2022-11-16 11:43:35,341 INFO L78 Accepts]: Start accepts. Automaton has 29626 states and 41633 transitions. Word has length 156 [2022-11-16 11:43:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:35,342 INFO L495 AbstractCegarLoop]: Abstraction has 29626 states and 41633 transitions. [2022-11-16 11:43:35,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 29626 states and 41633 transitions. [2022-11-16 11:43:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:43:35,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:35,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:43:35,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1634156586, now seen corresponding path program 1 times [2022-11-16 11:43:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887471164] [2022-11-16 11:43:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:35,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:35,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887471164] [2022-11-16 11:43:35,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887471164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:35,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:35,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:43:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374039722] [2022-11-16 11:43:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:35,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:35,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:35,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:35,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:35,760 INFO L87 Difference]: Start difference. First operand 29626 states and 41633 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:43,278 INFO L93 Difference]: Finished difference Result 76767 states and 107981 transitions. [2022-11-16 11:43:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:43,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-11-16 11:43:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:43,348 INFO L225 Difference]: With dead ends: 76767 [2022-11-16 11:43:43,348 INFO L226 Difference]: Without dead ends: 47501 [2022-11-16 11:43:43,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:43,365 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 872 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:43,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1132 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:43:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47501 states. [2022-11-16 11:43:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47501 to 47499. [2022-11-16 11:43:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47499 states, 47498 states have (on average 1.3881847656743442) internal successors, (65936), 47498 states have internal predecessors, (65936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47499 states to 47499 states and 65936 transitions. [2022-11-16 11:43:51,790 INFO L78 Accepts]: Start accepts. Automaton has 47499 states and 65936 transitions. Word has length 156 [2022-11-16 11:43:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:51,790 INFO L495 AbstractCegarLoop]: Abstraction has 47499 states and 65936 transitions. [2022-11-16 11:43:51,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 47499 states and 65936 transitions. [2022-11-16 11:43:51,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-16 11:43:51,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:51,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:43:51,872 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash 926322572, now seen corresponding path program 1 times [2022-11-16 11:43:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:51,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579541612] [2022-11-16 11:43:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:51,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:52,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:52,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579541612] [2022-11-16 11:43:52,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579541612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:52,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:52,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:43:52,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559829970] [2022-11-16 11:43:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:52,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:52,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:52,248 INFO L87 Difference]: Start difference. First operand 47499 states and 65936 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:59,602 INFO L93 Difference]: Finished difference Result 75789 states and 105192 transitions. [2022-11-16 11:43:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:59,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-11-16 11:43:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:59,656 INFO L225 Difference]: With dead ends: 75789 [2022-11-16 11:43:59,657 INFO L226 Difference]: Without dead ends: 38775 [2022-11-16 11:43:59,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:59,691 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 53 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:59,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1346 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:43:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38775 states.