./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/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_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/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_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/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 a3df27f87602fca8935d2269a873dfd3f1a5195383d477434680a0bc703d239a --- 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 11:36:36,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:36:36,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:36:36,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:36:36,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:36:36,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:36:36,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:36:36,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:36:36,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:36:36,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:36:36,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:36:36,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:36:36,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:36:36,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:36:36,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:36:36,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:36:36,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:36:36,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:36:36,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:36:36,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:36:36,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:36:36,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:36:36,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:36:36,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:36:36,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:36:36,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:36:36,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:36:36,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:36:36,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:36:36,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:36:36,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:36:36,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:36:36,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:36:36,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:36:36,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:36:36,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:36:36,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:36:36,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:36:36,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:36:36,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:36:36,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:36:36,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:36:36,295 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:36:36,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:36:36,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:36:36,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:36:36,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:36:36,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:36:36,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:36:36,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:36:36,298 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:36:36,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:36:36,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:36:36,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:36:36,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:36:36,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:36:36,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:36:36,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:36:36,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:36:36,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:36:36,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:36:36,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:36:36,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:36:36,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:36:36,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:36:36,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:36:36,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:36,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:36:36,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:36:36,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:36:36,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:36:36,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:36:36,304 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:36:36,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:36:36,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:36:36,305 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_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3df27f87602fca8935d2269a873dfd3f1a5195383d477434680a0bc703d239a [2022-11-16 11:36:36,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:36:36,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:36:36,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:36:36,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:36:36,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:36:36,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2022-11-16 11:36:36,669 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/data/cdc324477/04b72076c3eb4fdcb799c1859828db47/FLAGe7a2b357f [2022-11-16 11:36:37,208 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:36:37,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2022-11-16 11:36:37,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/data/cdc324477/04b72076c3eb4fdcb799c1859828db47/FLAGe7a2b357f [2022-11-16 11:36:37,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/data/cdc324477/04b72076c3eb4fdcb799c1859828db47 [2022-11-16 11:36:37,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:36:37,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:36:37,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:37,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:36:37,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:36:37,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:37" (1/1) ... [2022-11-16 11:36:37,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7bc341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:37, skipping insertion in model container [2022-11-16 11:36:37,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:37" (1/1) ... [2022-11-16 11:36:37,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:36:37,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:36:37,905 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_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2022-11-16 11:36:37,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:37,924 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:36:38,007 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_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2022-11-16 11:36:38,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:38,026 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:36:38,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38 WrapperNode [2022-11-16 11:36:38,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:38,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:38,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:36:38,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:36:38,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,079 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 491 [2022-11-16 11:36:38,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:38,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:36:38,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:36:38,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:36:38,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:36:38,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:36:38,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:36:38,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:36:38,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (1/1) ... [2022-11-16 11:36:38,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:38,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:38,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:38,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88a32af7-a2e6-4e04-809f-91dd8d3efd8f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:36:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:36:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:36:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:36:38,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:36:38,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:36:38,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:36:39,003 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:36:39,011 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:36:39,012 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:36:39,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:39 BoogieIcfgContainer [2022-11-16 11:36:39,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:36:39,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:36:39,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:36:39,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:36:39,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:36:37" (1/3) ... [2022-11-16 11:36:39,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35655091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:36:39, skipping insertion in model container [2022-11-16 11:36:39,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:38" (2/3) ... [2022-11-16 11:36:39,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35655091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:36:39, skipping insertion in model container [2022-11-16 11:36:39,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:39" (3/3) ... [2022-11-16 11:36:39,030 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2022-11-16 11:36:39,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:36:39,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:36:39,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:36:39,160 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;@34934279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:36:39,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:36:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.7938931297709924) internal successors, (235), 132 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 11:36:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:36:39,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:39,173 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] [2022-11-16 11:36:39,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1185784111, now seen corresponding path program 1 times [2022-11-16 11:36:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:39,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841963703] [2022-11-16 11:36:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:39,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:39,500 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 11:36:39,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:39,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841963703] [2022-11-16 11:36:39,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841963703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:39,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:39,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:36:39,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315440465] [2022-11-16 11:36:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:39,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:36:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:36:39,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:36:39,548 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.7938931297709924) internal successors, (235), 132 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 11:36:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:39,576 INFO L93 Difference]: Finished difference Result 196 states and 339 transitions. [2022-11-16 11:36:39,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:36:39,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-16 11:36:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:39,588 INFO L225 Difference]: With dead ends: 196 [2022-11-16 11:36:39,589 INFO L226 Difference]: Without dead ends: 129 [2022-11-16 11:36:39,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:36:39,595 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:39,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:39,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-16 11:36:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-16 11:36:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.78125) internal successors, (228), 128 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 11:36:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 228 transitions. [2022-11-16 11:36:39,638 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 228 transitions. Word has length 29 [2022-11-16 11:36:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:39,639 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 228 transitions. [2022-11-16 11:36:39,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 11:36:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 228 transitions. [2022-11-16 11:36:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:36:39,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:39,641 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] [2022-11-16 11:36:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:36:39,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1319797617, now seen corresponding path program 1 times [2022-11-16 11:36:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:39,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135287342] [2022-11-16 11:36:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:39,969 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 11:36:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:39,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135287342] [2022-11-16 11:36:39,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135287342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:39,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:39,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:36:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947610982] [2022-11-16 11:36:39,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:39,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:36:39,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:36:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:36:39,973 INFO L87 Difference]: Start difference. First operand 129 states and 228 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 11:36:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:40,122 INFO L93 Difference]: Finished difference Result 195 states and 332 transitions. [2022-11-16 11:36:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:36:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-16 11:36:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:40,130 INFO L225 Difference]: With dead ends: 195 [2022-11-16 11:36:40,130 INFO L226 Difference]: Without dead ends: 129 [2022-11-16 11:36:40,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:36:40,132 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 3 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:40,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 840 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:36:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-16 11:36:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-16 11:36:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.3046875) internal successors, (167), 128 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2022-11-16 11:36:40,158 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 29 [2022-11-16 11:36:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:40,158 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2022-11-16 11:36:40,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 11:36:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2022-11-16 11:36:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:36:40,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:40,166 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] [2022-11-16 11:36:40,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:36:40,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:40,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:40,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1496007295, now seen corresponding path program 1 times [2022-11-16 11:36:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132662223] [2022-11-16 11:36:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:40,690 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 11:36:40,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:40,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132662223] [2022-11-16 11:36:40,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132662223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:40,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:40,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:36:40,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492680981] [2022-11-16 11:36:40,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:40,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:36:40,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:36:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:36:40,694 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 11:36:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:41,477 INFO L93 Difference]: Finished difference Result 1121 states and 1767 transitions. [2022-11-16 11:36:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:36:41,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-11-16 11:36:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:41,484 INFO L225 Difference]: With dead ends: 1121 [2022-11-16 11:36:41,484 INFO L226 Difference]: Without dead ends: 1059 [2022-11-16 11:36:41,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:36:41,486 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1981 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 4541 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:36:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-16 11:36:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 189. [2022-11-16 11:36:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.4042553191489362) internal successors, (264), 188 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:36:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 264 transitions. [2022-11-16 11:36:41,522 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 264 transitions. Word has length 89 [2022-11-16 11:36:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:41,522 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 264 transitions. [2022-11-16 11:36:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 11:36:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 264 transitions. [2022-11-16 11:36:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:36:41,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:41,525 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] [2022-11-16 11:36:41,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:36:41,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1728245231, now seen corresponding path program 1 times [2022-11-16 11:36:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:41,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443883666] [2022-11-16 11:36:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:41,754 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 11:36:41,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443883666] [2022-11-16 11:36:41,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443883666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:41,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:41,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443971589] [2022-11-16 11:36:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:41,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:41,757 INFO L87 Difference]: Start difference. First operand 189 states and 264 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 11:36:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:41,814 INFO L93 Difference]: Finished difference Result 422 states and 639 transitions. [2022-11-16 11:36:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-16 11:36:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:41,818 INFO L225 Difference]: With dead ends: 422 [2022-11-16 11:36:41,818 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 11:36:41,823 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 11:36:41,832 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 69 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:41,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 256 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 11:36:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-11-16 11:36:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.471186440677966) internal successors, (434), 295 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 11:36:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 434 transitions. [2022-11-16 11:36:41,875 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 434 transitions. Word has length 91 [2022-11-16 11:36:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:41,877 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 434 transitions. [2022-11-16 11:36:41,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 11:36:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 434 transitions. [2022-11-16 11:36:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:36:41,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:41,887 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] [2022-11-16 11:36:41,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:36:41,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1794738743, now seen corresponding path program 1 times [2022-11-16 11:36:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:41,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489445957] [2022-11-16 11:36:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:41,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:42,481 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 11:36:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:42,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489445957] [2022-11-16 11:36:42,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489445957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:42,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:42,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:36:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685506986] [2022-11-16 11:36:42,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:36:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:36:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:36:42,488 INFO L87 Difference]: Start difference. First operand 296 states and 434 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 11:36:43,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:43,054 INFO L93 Difference]: Finished difference Result 527 states and 802 transitions. [2022-11-16 11:36:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:36:43,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-16 11:36:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:43,058 INFO L225 Difference]: With dead ends: 527 [2022-11-16 11:36:43,059 INFO L226 Difference]: Without dead ends: 298 [2022-11-16 11:36:43,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:36:43,061 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 952 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:43,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 840 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:36:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-16 11:36:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2022-11-16 11:36:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.464406779661017) internal successors, (432), 295 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 11:36:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 432 transitions. [2022-11-16 11:36:43,098 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 432 transitions. Word has length 91 [2022-11-16 11:36:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:43,098 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 432 transitions. [2022-11-16 11:36:43,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 11:36:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 432 transitions. [2022-11-16 11:36:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:36:43,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:43,100 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] [2022-11-16 11:36:43,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:36:43,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash -612396632, now seen corresponding path program 1 times [2022-11-16 11:36:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:43,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204237252] [2022-11-16 11:36:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:43,450 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 11:36:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:43,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204237252] [2022-11-16 11:36:43,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204237252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:43,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:43,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:36:43,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269954630] [2022-11-16 11:36:43,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:43,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:36:43,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:43,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:36:43,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:36:43,453 INFO L87 Difference]: Start difference. First operand 296 states and 432 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 11:36:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:43,631 INFO L93 Difference]: Finished difference Result 521 states and 786 transitions. [2022-11-16 11:36:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:36:43,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-11-16 11:36:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:43,634 INFO L225 Difference]: With dead ends: 521 [2022-11-16 11:36:43,635 INFO L226 Difference]: Without dead ends: 519 [2022-11-16 11:36:43,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:36:43,636 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 592 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:43,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 935 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-16 11:36:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 302. [2022-11-16 11:36:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.451827242524917) internal successors, (437), 301 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 11:36:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 437 transitions. [2022-11-16 11:36:43,673 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 437 transitions. Word has length 92 [2022-11-16 11:36:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:43,673 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 437 transitions. [2022-11-16 11:36:43,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 11:36:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 437 transitions. [2022-11-16 11:36:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:43,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:43,675 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] [2022-11-16 11:36:43,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:36:43,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 759003703, now seen corresponding path program 1 times [2022-11-16 11:36:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:43,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593845996] [2022-11-16 11:36:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:43,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:43,764 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 11:36:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:43,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593845996] [2022-11-16 11:36:43,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593845996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:43,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:43,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492966199] [2022-11-16 11:36:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:43,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:43,767 INFO L87 Difference]: Start difference. First operand 302 states and 437 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:43,864 INFO L93 Difference]: Finished difference Result 756 states and 1149 transitions. [2022-11-16 11:36:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:43,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:43,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:43,867 INFO L225 Difference]: With dead ends: 756 [2022-11-16 11:36:43,867 INFO L226 Difference]: Without dead ends: 521 [2022-11-16 11:36:43,868 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 11:36:43,869 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 88 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:43,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 349 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-16 11:36:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2022-11-16 11:36:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.494208494208494) internal successors, (774), 518 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 11:36:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 774 transitions. [2022-11-16 11:36:43,937 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 774 transitions. Word has length 93 [2022-11-16 11:36:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:43,938 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 774 transitions. [2022-11-16 11:36:43,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 774 transitions. [2022-11-16 11:36:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:43,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:43,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:43,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:36:43,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:43,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:43,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1593894089, now seen corresponding path program 1 times [2022-11-16 11:36:43,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:43,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066802145] [2022-11-16 11:36:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:43,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:44,027 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 11:36:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:44,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066802145] [2022-11-16 11:36:44,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066802145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:44,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:44,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113735024] [2022-11-16 11:36:44,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:44,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:44,030 INFO L87 Difference]: Start difference. First operand 519 states and 774 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:44,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:44,174 INFO L93 Difference]: Finished difference Result 1391 states and 2132 transitions. [2022-11-16 11:36:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:44,178 INFO L225 Difference]: With dead ends: 1391 [2022-11-16 11:36:44,179 INFO L226 Difference]: Without dead ends: 939 [2022-11-16 11:36:44,180 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 11:36:44,180 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 86 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:44,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 351 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-16 11:36:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 937. [2022-11-16 11:36:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.5128205128205128) internal successors, (1416), 936 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 11:36:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1416 transitions. [2022-11-16 11:36:44,339 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1416 transitions. Word has length 93 [2022-11-16 11:36:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:44,339 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1416 transitions. [2022-11-16 11:36:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1416 transitions. [2022-11-16 11:36:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:44,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:44,341 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] [2022-11-16 11:36:44,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:36:44,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1430979529, now seen corresponding path program 1 times [2022-11-16 11:36:44,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:44,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14929348] [2022-11-16 11:36:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:44,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:44,437 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 11:36:44,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:44,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14929348] [2022-11-16 11:36:44,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14929348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:44,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:44,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768256141] [2022-11-16 11:36:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:44,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:44,441 INFO L87 Difference]: Start difference. First operand 937 states and 1416 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:44,777 INFO L93 Difference]: Finished difference Result 2613 states and 4002 transitions. [2022-11-16 11:36:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:44,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:44,783 INFO L225 Difference]: With dead ends: 2613 [2022-11-16 11:36:44,784 INFO L226 Difference]: Without dead ends: 1743 [2022-11-16 11:36:44,785 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 11:36:44,787 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 84 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:44,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 353 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2022-11-16 11:36:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1741. [2022-11-16 11:36:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 1.5149425287356322) internal successors, (2636), 1740 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states 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 11:36:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2636 transitions. [2022-11-16 11:36:45,082 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2636 transitions. Word has length 93 [2022-11-16 11:36:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:45,082 INFO L495 AbstractCegarLoop]: Abstraction has 1741 states and 2636 transitions. [2022-11-16 11:36:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2636 transitions. [2022-11-16 11:36:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:45,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:45,087 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] [2022-11-16 11:36:45,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:36:45,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1167123145, now seen corresponding path program 1 times [2022-11-16 11:36:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:45,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676800268] [2022-11-16 11:36:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:45,193 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 11:36:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:45,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676800268] [2022-11-16 11:36:45,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676800268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:45,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:45,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293881416] [2022-11-16 11:36:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:45,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:45,196 INFO L87 Difference]: Start difference. First operand 1741 states and 2636 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:45,862 INFO L93 Difference]: Finished difference Result 4961 states and 7550 transitions. [2022-11-16 11:36:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:45,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:45,888 INFO L225 Difference]: With dead ends: 4961 [2022-11-16 11:36:45,889 INFO L226 Difference]: Without dead ends: 3287 [2022-11-16 11:36:45,893 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 11:36:45,894 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 82 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:45,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 355 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2022-11-16 11:36:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3285. [2022-11-16 11:36:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 3284 states have (on average 1.5066991473812423) internal successors, (4948), 3284 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states 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 11:36:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4948 transitions. [2022-11-16 11:36:46,484 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4948 transitions. Word has length 93 [2022-11-16 11:36:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:46,485 INFO L495 AbstractCegarLoop]: Abstraction has 3285 states and 4948 transitions. [2022-11-16 11:36:46,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4948 transitions. [2022-11-16 11:36:46,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:46,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:46,487 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] [2022-11-16 11:36:46,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:36:46,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2144329929, now seen corresponding path program 1 times [2022-11-16 11:36:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:46,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874742943] [2022-11-16 11:36:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:46,659 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 11:36:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:46,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874742943] [2022-11-16 11:36:46,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874742943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:46,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:46,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057202967] [2022-11-16 11:36:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:46,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:46,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:46,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:46,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:46,663 INFO L87 Difference]: Start difference. First operand 3285 states and 4948 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:47,638 INFO L93 Difference]: Finished difference Result 9465 states and 14262 transitions. [2022-11-16 11:36:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:47,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:47,665 INFO L225 Difference]: With dead ends: 9465 [2022-11-16 11:36:47,665 INFO L226 Difference]: Without dead ends: 6247 [2022-11-16 11:36:47,670 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 11:36:47,671 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 78 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:47,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 351 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6247 states. [2022-11-16 11:36:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6247 to 6245. [2022-11-16 11:36:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6245 states, 6244 states have (on average 1.4919923126201153) internal successors, (9316), 6244 states have internal predecessors, (9316), 0 states have call successors, (0), 0 states 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 11:36:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 9316 transitions. [2022-11-16 11:36:48,668 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 9316 transitions. Word has length 93 [2022-11-16 11:36:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:48,668 INFO L495 AbstractCegarLoop]: Abstraction has 6245 states and 9316 transitions. [2022-11-16 11:36:48,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 9316 transitions. [2022-11-16 11:36:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:48,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:48,670 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] [2022-11-16 11:36:48,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:36:48,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -363397065, now seen corresponding path program 1 times [2022-11-16 11:36:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:48,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208352261] [2022-11-16 11:36:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:48,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:48,760 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 11:36:48,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208352261] [2022-11-16 11:36:48,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208352261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:48,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:48,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677102923] [2022-11-16 11:36:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:48,763 INFO L87 Difference]: Start difference. First operand 6245 states and 9316 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:50,476 INFO L93 Difference]: Finished difference Result 18089 states and 26918 transitions. [2022-11-16 11:36:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:50,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:50,524 INFO L225 Difference]: With dead ends: 18089 [2022-11-16 11:36:50,524 INFO L226 Difference]: Without dead ends: 11911 [2022-11-16 11:36:50,533 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 11:36:50,534 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 76 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:50,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 353 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:50,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11911 states. [2022-11-16 11:36:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11911 to 11909. [2022-11-16 11:36:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11909 states, 11908 states have (on average 1.472959355055425) internal successors, (17540), 11908 states have internal predecessors, (17540), 0 states have call successors, (0), 0 states 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 11:36:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11909 states to 11909 states and 17540 transitions. [2022-11-16 11:36:52,157 INFO L78 Accepts]: Start accepts. Automaton has 11909 states and 17540 transitions. Word has length 93 [2022-11-16 11:36:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:52,158 INFO L495 AbstractCegarLoop]: Abstraction has 11909 states and 17540 transitions. [2022-11-16 11:36:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11909 states and 17540 transitions. [2022-11-16 11:36:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:36:52,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:52,159 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] [2022-11-16 11:36:52,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:36:52,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:52,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:52,160 INFO L85 PathProgramCache]: Analyzing trace with hash 71138871, now seen corresponding path program 1 times [2022-11-16 11:36:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:52,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831630780] [2022-11-16 11:36:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:52,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:52,244 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 11:36:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:52,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831630780] [2022-11-16 11:36:52,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831630780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:52,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:52,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221131898] [2022-11-16 11:36:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:52,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:52,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:52,247 INFO L87 Difference]: Start difference. First operand 11909 states and 17540 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:54,669 INFO L93 Difference]: Finished difference Result 34569 states and 50694 transitions. [2022-11-16 11:36:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:36:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:54,724 INFO L225 Difference]: With dead ends: 34569 [2022-11-16 11:36:54,724 INFO L226 Difference]: Without dead ends: 22727 [2022-11-16 11:36:54,741 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 11:36:54,742 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 80 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:54,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 357 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:36:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22727 states. [2022-11-16 11:36:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22727 to 22725. [2022-11-16 11:36:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22725 states, 22724 states have (on average 1.4506248899841576) internal successors, (32964), 22724 states have internal predecessors, (32964), 0 states have call successors, (0), 0 states 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 11:36:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22725 states to 22725 states and 32964 transitions. [2022-11-16 11:36:57,534 INFO L78 Accepts]: Start accepts. Automaton has 22725 states and 32964 transitions. Word has length 93 [2022-11-16 11:36:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:57,534 INFO L495 AbstractCegarLoop]: Abstraction has 22725 states and 32964 transitions. [2022-11-16 11:36:57,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:36:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22725 states and 32964 transitions. [2022-11-16 11:36:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 11:36:57,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:57,537 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] [2022-11-16 11:36:57,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:36:57,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1748186322, now seen corresponding path program 1 times [2022-11-16 11:36:57,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:57,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287460608] [2022-11-16 11:36:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:57,635 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 11:36:57,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:57,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287460608] [2022-11-16 11:36:57,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287460608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:57,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:57,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641213073] [2022-11-16 11:36:57,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:57,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:57,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:57,639 INFO L87 Difference]: Start difference. First operand 22725 states and 32964 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:37:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:01,286 INFO L93 Difference]: Finished difference Result 46284 states and 67530 transitions. [2022-11-16 11:37:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:37:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-11-16 11:37:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:01,367 INFO L225 Difference]: With dead ends: 46284 [2022-11-16 11:37:01,367 INFO L226 Difference]: Without dead ends: 33737 [2022-11-16 11:37:01,385 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 11:37:01,386 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:01,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 350 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:37:01,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33737 states. [2022-11-16 11:37:05,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33737 to 33735. [2022-11-16 11:37:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33735 states, 33734 states have (on average 1.4439437955771626) internal successors, (48710), 33734 states have internal predecessors, (48710), 0 states have call successors, (0), 0 states 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 11:37:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33735 states to 33735 states and 48710 transitions. [2022-11-16 11:37:05,491 INFO L78 Accepts]: Start accepts. Automaton has 33735 states and 48710 transitions. Word has length 95 [2022-11-16 11:37:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:05,491 INFO L495 AbstractCegarLoop]: Abstraction has 33735 states and 48710 transitions. [2022-11-16 11:37:05,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:37:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 33735 states and 48710 transitions. [2022-11-16 11:37:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:37:05,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:05,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:37:05,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:37:05,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash -467827745, now seen corresponding path program 1 times [2022-11-16 11:37:05,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:05,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234980197] [2022-11-16 11:37:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:37:05,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234980197] [2022-11-16 11:37:05,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234980197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:05,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:05,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:37:05,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4819736] [2022-11-16 11:37:05,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:05,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:37:05,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:37:05,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:37:05,952 INFO L87 Difference]: Start difference. First operand 33735 states and 48710 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)