./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro --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 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb --- 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-8393723 [2022-11-18 20:24:36,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:24:36,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:24:36,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:24:36,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:24:36,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:24:36,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:24:36,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:24:36,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:24:36,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:24:36,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:24:36,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:24:36,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:24:36,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:24:36,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:24:36,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:24:36,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:24:36,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:24:36,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:24:36,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:24:36,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:24:36,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:24:36,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:24:36,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:24:36,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:24:36,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:24:36,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:24:36,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:24:36,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:24:36,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:24:36,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:24:36,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:24:36,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:24:36,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:24:36,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:24:36,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:24:36,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:24:36,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:24:36,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:24:36,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:24:36,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:24:36,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:24:36,248 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:24:36,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:24:36,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:24:36,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:24:36,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:24:36,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:24:36,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:24:36,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:24:36,251 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:24:36,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:24:36,251 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:24:36,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:24:36,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:24:36,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:24:36,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:24:36,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:24:36,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:24:36,252 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:24:36,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:24:36,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:24:36,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:24:36,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:24:36,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:24:36,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:24:36,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:36,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:24:36,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:24:36,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:24:36,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:24:36,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:24:36,255 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:24:36,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:24:36,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:24:36,256 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_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb [2022-11-18 20:24:36,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:24:36,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:24:36,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:24:36,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:24:36,588 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:24:36,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-11-18 20:24:36,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/data/7a14ee322/56c1c2d4e3d641bc94d8a156a755d325/FLAGd86deb0d1 [2022-11-18 20:24:37,324 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:24:37,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-11-18 20:24:37,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/data/7a14ee322/56c1c2d4e3d641bc94d8a156a755d325/FLAGd86deb0d1 [2022-11-18 20:24:37,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/data/7a14ee322/56c1c2d4e3d641bc94d8a156a755d325 [2022-11-18 20:24:37,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:24:37,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:24:37,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:37,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:24:37,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:24:37,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:37" (1/1) ... [2022-11-18 20:24:37,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283b93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:37, skipping insertion in model container [2022-11-18 20:24:37,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:37" (1/1) ... [2022-11-18 20:24:37,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:24:37,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:24:37,920 WARN L234 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_96a8335e-d519-419c-bfe4-4ea334b55514/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[911,924] [2022-11-18 20:24:37,988 WARN L234 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_96a8335e-d519-419c-bfe4-4ea334b55514/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[8416,8429] [2022-11-18 20:24:38,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:38,128 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:24:38,153 WARN L234 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_96a8335e-d519-419c-bfe4-4ea334b55514/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[911,924] [2022-11-18 20:24:38,191 WARN L234 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_96a8335e-d519-419c-bfe4-4ea334b55514/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[8416,8429] [2022-11-18 20:24:38,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:38,313 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:24:38,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38 WrapperNode [2022-11-18 20:24:38,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:38,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:38,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:24:38,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:24:38,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,420 INFO L138 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 846 [2022-11-18 20:24:38,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:38,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:24:38,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:24:38,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:24:38,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:24:38,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:24:38,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:24:38,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:24:38,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (1/1) ... [2022-11-18 20:24:38,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:38,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:38,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:24:38,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96a8335e-d519-419c-bfe4-4ea334b55514/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:24:38,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:24:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:24:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:24:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-18 20:24:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-18 20:24:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-18 20:24:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-18 20:24:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-18 20:24:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-18 20:24:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-18 20:24:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-18 20:24:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-18 20:24:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-18 20:24:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-18 20:24:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-18 20:24:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-18 20:24:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-18 20:24:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-18 20:24:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-18 20:24:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-18 20:24:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-18 20:24:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-18 20:24:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-18 20:24:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:24:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-18 20:24:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-18 20:24:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-18 20:24:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-18 20:24:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:24:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:24:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-18 20:24:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-18 20:24:38,812 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:24:38,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:24:39,585 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-18 20:24:39,586 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-18 20:24:39,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:24:39,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:24:39,678 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-18 20:24:39,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:39 BoogieIcfgContainer [2022-11-18 20:24:39,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:24:39,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:24:39,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:24:39,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:24:39,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:24:37" (1/3) ... [2022-11-18 20:24:39,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554db783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:39, skipping insertion in model container [2022-11-18 20:24:39,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:38" (2/3) ... [2022-11-18 20:24:39,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554db783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:39, skipping insertion in model container [2022-11-18 20:24:39,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:39" (3/3) ... [2022-11-18 20:24:39,692 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-11-18 20:24:39,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:24:39,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:24:39,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:24:39,794 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;@48dc03fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:24:39,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:24:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 344 states have (on average 1.619186046511628) internal successors, (557), 350 states have internal predecessors, (557), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-18 20:24:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:24:39,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:39,827 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] [2022-11-18 20:24:39,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1055313032, now seen corresponding path program 1 times [2022-11-18 20:24:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:39,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913466542] [2022-11-18 20:24:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:39,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:24:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:24:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:24:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:40,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:40,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913466542] [2022-11-18 20:24:40,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913466542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:40,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:40,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:24:40,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862666235] [2022-11-18 20:24:40,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:24:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:24:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:40,534 INFO L87 Difference]: Start difference. First operand has 399 states, 344 states have (on average 1.619186046511628) internal successors, (557), 350 states have internal predecessors, (557), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:24:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:42,462 INFO L93 Difference]: Finished difference Result 925 states and 1461 transitions. [2022-11-18 20:24:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:24:42,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 20:24:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:42,494 INFO L225 Difference]: With dead ends: 925 [2022-11-18 20:24:42,495 INFO L226 Difference]: Without dead ends: 540 [2022-11-18 20:24:42,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:24:42,516 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 765 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:42,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 2028 Invalid, 1426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:24:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-18 20:24:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 501. [2022-11-18 20:24:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 426 states have (on average 1.5070422535211268) internal successors, (642), 432 states have internal predecessors, (642), 51 states have call successors, (51), 21 states have call predecessors, (51), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-11-18 20:24:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 747 transitions. [2022-11-18 20:24:42,640 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 747 transitions. Word has length 65 [2022-11-18 20:24:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:42,641 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 747 transitions. [2022-11-18 20:24:42,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:24:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 747 transitions. [2022-11-18 20:24:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:24:42,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:42,646 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] [2022-11-18 20:24:42,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:24:42,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 623575608, now seen corresponding path program 1 times [2022-11-18 20:24:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:42,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372706434] [2022-11-18 20:24:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:42,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:24:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:24:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:24:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:42,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:42,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372706434] [2022-11-18 20:24:42,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372706434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:42,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:42,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:24:42,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537825210] [2022-11-18 20:24:42,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:42,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:24:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:24:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:42,967 INFO L87 Difference]: Start difference. First operand 501 states and 747 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:24:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:44,475 INFO L93 Difference]: Finished difference Result 898 states and 1313 transitions. [2022-11-18 20:24:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:24:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 20:24:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:44,481 INFO L225 Difference]: With dead ends: 898 [2022-11-18 20:24:44,481 INFO L226 Difference]: Without dead ends: 689 [2022-11-18 20:24:44,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:24:44,484 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1432 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:44,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 1766 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:24:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-18 20:24:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 613. [2022-11-18 20:24:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 516 states have (on average 1.4883720930232558) internal successors, (768), 524 states have internal predecessors, (768), 64 states have call successors, (64), 28 states have call predecessors, (64), 31 states have return successors, (75), 64 states have call predecessors, (75), 62 states have call successors, (75) [2022-11-18 20:24:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 907 transitions. [2022-11-18 20:24:44,566 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 907 transitions. Word has length 65 [2022-11-18 20:24:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:44,567 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 907 transitions. [2022-11-18 20:24:44,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:24:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 907 transitions. [2022-11-18 20:24:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:24:44,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:44,571 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] [2022-11-18 20:24:44,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:24:44,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1405010502, now seen corresponding path program 1 times [2022-11-18 20:24:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:44,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824278857] [2022-11-18 20:24:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:24:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:24:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:24:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824278857] [2022-11-18 20:24:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824278857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:44,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:44,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:24:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379989627] [2022-11-18 20:24:44,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:44,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:24:44,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:24:44,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:24:44,704 INFO L87 Difference]: Start difference. First operand 613 states and 907 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:24:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:45,941 INFO L93 Difference]: Finished difference Result 1285 states and 1849 transitions. [2022-11-18 20:24:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:24:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-18 20:24:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:45,952 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:24:45,953 INFO L226 Difference]: Without dead ends: 970 [2022-11-18 20:24:45,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:24:45,963 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1543 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:45,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1315 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:24:45,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-11-18 20:24:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 894. [2022-11-18 20:24:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 742 states have (on average 1.4487870619946093) internal successors, (1075), 754 states have internal predecessors, (1075), 94 states have call successors, (94), 49 states have call predecessors, (94), 56 states have return successors, (113), 94 states have call predecessors, (113), 92 states have call successors, (113) [2022-11-18 20:24:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1282 transitions. [2022-11-18 20:24:46,067 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1282 transitions. Word has length 65 [2022-11-18 20:24:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:46,068 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1282 transitions. [2022-11-18 20:24:46,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:24:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1282 transitions. [2022-11-18 20:24:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:24:46,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:46,074 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] [2022-11-18 20:24:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:24:46,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash 603910498, now seen corresponding path program 1 times [2022-11-18 20:24:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:46,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635238705] [2022-11-18 20:24:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:46,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:24:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:24:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:24:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:46,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:46,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635238705] [2022-11-18 20:24:46,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635238705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:46,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:46,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:24:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321209532] [2022-11-18 20:24:46,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:24:46,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:24:46,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:24:46,351 INFO L87 Difference]: Start difference. First operand 894 states and 1282 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:24:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:47,848 INFO L93 Difference]: Finished difference Result 1568 states and 2218 transitions. [2022-11-18 20:24:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:24:47,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 20:24:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:47,856 INFO L225 Difference]: With dead ends: 1568 [2022-11-18 20:24:47,856 INFO L226 Difference]: Without dead ends: 972 [2022-11-18 20:24:47,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:24:47,865 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 512 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:47,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2339 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:24:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-18 20:24:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 909. [2022-11-18 20:24:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 754 states have (on average 1.4376657824933687) internal successors, (1084), 766 states have internal predecessors, (1084), 94 states have call successors, (94), 49 states have call predecessors, (94), 59 states have return successors, (116), 97 states have call predecessors, (116), 92 states have call successors, (116) [2022-11-18 20:24:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1294 transitions. [2022-11-18 20:24:47,965 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1294 transitions. Word has length 66 [2022-11-18 20:24:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:47,965 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1294 transitions. [2022-11-18 20:24:47,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:24:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1294 transitions. [2022-11-18 20:24:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:24:47,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:47,968 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] [2022-11-18 20:24:47,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:24:47,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:47,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -425448800, now seen corresponding path program 1 times [2022-11-18 20:24:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:47,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522391296] [2022-11-18 20:24:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:24:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:24:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:24:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522391296] [2022-11-18 20:24:48,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522391296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:48,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:48,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:24:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870774295] [2022-11-18 20:24:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:24:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:24:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:24:48,199 INFO L87 Difference]: Start difference. First operand 909 states and 1294 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:24:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:51,285 INFO L93 Difference]: Finished difference Result 3114 states and 4415 transitions. [2022-11-18 20:24:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:24:51,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-18 20:24:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:51,292 INFO L225 Difference]: With dead ends: 3114 [2022-11-18 20:24:51,292 INFO L226 Difference]: Without dead ends: 1272 [2022-11-18 20:24:51,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:24:51,298 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2473 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:51,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2497 Valid, 2014 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:24:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-11-18 20:24:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1117. [2022-11-18 20:24:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 906 states have (on average 1.3995584988962473) internal successors, (1268), 922 states have internal predecessors, (1268), 124 states have call successors, (124), 70 states have call predecessors, (124), 85 states have return successors, (165), 128 states have call predecessors, (165), 122 states have call successors, (165) [2022-11-18 20:24:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1557 transitions. [2022-11-18 20:24:51,393 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1557 transitions. Word has length 66 [2022-11-18 20:24:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:51,393 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1557 transitions. [2022-11-18 20:24:51,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:24:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1557 transitions. [2022-11-18 20:24:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:24:51,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:51,396 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] [2022-11-18 20:24:51,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:24:51,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash 661226175, now seen corresponding path program 1 times [2022-11-18 20:24:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:51,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785120091] [2022-11-18 20:24:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:24:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:24:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:24:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785120091] [2022-11-18 20:24:51,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785120091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:51,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:51,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:24:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414719963] [2022-11-18 20:24:51,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:51,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:24:51,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:24:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:24:51,649 INFO L87 Difference]: Start difference. First operand 1117 states and 1557 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:24:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:52,973 INFO L93 Difference]: Finished difference Result 2302 states and 3182 transitions. [2022-11-18 20:24:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:24:52,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 67 [2022-11-18 20:24:52,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:52,977 INFO L225 Difference]: With dead ends: 2302 [2022-11-18 20:24:52,977 INFO L226 Difference]: Without dead ends: 278 [2022-11-18 20:24:52,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:24:52,984 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1512 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:52,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 1682 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:24:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-18 20:24:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-18 20:24:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5582329317269077) internal successors, (388), 250 states have internal predecessors, (388), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:24:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-11-18 20:24:53,006 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 67 [2022-11-18 20:24:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:53,006 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-11-18 20:24:53,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:24:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-11-18 20:24:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:24:53,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:53,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:53,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:24:53,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:53,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1126190140, now seen corresponding path program 1 times [2022-11-18 20:24:53,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:53,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783917888] [2022-11-18 20:24:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:24:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:24:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:24:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:24:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:53,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783917888] [2022-11-18 20:24:53,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783917888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:53,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:53,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:24:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316606951] [2022-11-18 20:24:53,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:53,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:24:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:24:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:24:53,204 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:24:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:54,762 INFO L93 Difference]: Finished difference Result 645 states and 1020 transitions. [2022-11-18 20:24:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:24:54,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:24:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:54,765 INFO L225 Difference]: With dead ends: 645 [2022-11-18 20:24:54,765 INFO L226 Difference]: Without dead ends: 376 [2022-11-18 20:24:54,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:54,767 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 732 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:54,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 544 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:24:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-18 20:24:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2022-11-18 20:24:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5542168674698795) internal successors, (387), 250 states have internal predecessors, (387), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:24:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2022-11-18 20:24:54,811 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 134 [2022-11-18 20:24:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:54,813 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2022-11-18 20:24:54,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:24:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2022-11-18 20:24:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:24:54,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:54,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:54,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:24:54,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash 179152254, now seen corresponding path program 1 times [2022-11-18 20:24:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:54,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496042842] [2022-11-18 20:24:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:54,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:24:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:24:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:24:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:24:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:55,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496042842] [2022-11-18 20:24:55,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496042842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:55,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:55,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:24:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508333557] [2022-11-18 20:24:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:55,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:55,069 INFO L87 Difference]: Start difference. First operand 278 states and 431 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:24:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:58,183 INFO L93 Difference]: Finished difference Result 1006 states and 1598 transitions. [2022-11-18 20:24:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:24:58,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:24:58,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:58,188 INFO L225 Difference]: With dead ends: 1006 [2022-11-18 20:24:58,188 INFO L226 Difference]: Without dead ends: 745 [2022-11-18 20:24:58,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:24:58,191 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1101 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:58,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 956 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:24:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-18 20:24:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 550. [2022-11-18 20:24:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 497 states have (on average 1.567404426559356) internal successors, (779), 499 states have internal predecessors, (779), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-18 20:24:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 860 transitions. [2022-11-18 20:24:58,273 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 860 transitions. Word has length 134 [2022-11-18 20:24:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:58,274 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 860 transitions. [2022-11-18 20:24:58,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:24:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 860 transitions. [2022-11-18 20:24:58,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:24:58,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:58,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:58,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:24:58,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:58,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1527351294, now seen corresponding path program 1 times [2022-11-18 20:24:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:58,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674187848] [2022-11-18 20:24:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:24:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:24:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:24:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:24:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:24:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:58,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:58,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674187848] [2022-11-18 20:24:58,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674187848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:58,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:58,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:24:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091380245] [2022-11-18 20:24:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:58,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:24:58,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:24:58,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:24:58,584 INFO L87 Difference]: Start difference. First operand 550 states and 860 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:02,236 INFO L93 Difference]: Finished difference Result 1659 states and 2636 transitions. [2022-11-18 20:25:02,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:02,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:02,254 INFO L225 Difference]: With dead ends: 1659 [2022-11-18 20:25:02,254 INFO L226 Difference]: Without dead ends: 1126 [2022-11-18 20:25:02,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:25:02,260 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1118 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:02,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1772 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:25:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-18 20:25:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 803. [2022-11-18 20:25:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 726 states have (on average 1.5606060606060606) internal successors, (1133), 729 states have internal predecessors, (1133), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-11-18 20:25:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1250 transitions. [2022-11-18 20:25:02,377 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1250 transitions. Word has length 134 [2022-11-18 20:25:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:02,377 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1250 transitions. [2022-11-18 20:25:02,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1250 transitions. [2022-11-18 20:25:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:02,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:02,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:02,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:25:02,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash 474534976, now seen corresponding path program 1 times [2022-11-18 20:25:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:02,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106595818] [2022-11-18 20:25:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:02,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106595818] [2022-11-18 20:25:02,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106595818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:02,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:02,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916035648] [2022-11-18 20:25:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:02,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:02,697 INFO L87 Difference]: Start difference. First operand 803 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:06,298 INFO L93 Difference]: Finished difference Result 2621 states and 4154 transitions. [2022-11-18 20:25:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:06,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:06,309 INFO L225 Difference]: With dead ends: 2621 [2022-11-18 20:25:06,309 INFO L226 Difference]: Without dead ends: 1835 [2022-11-18 20:25:06,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:25:06,313 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1122 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:06,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1770 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:25:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-11-18 20:25:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1310. [2022-11-18 20:25:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1185 states have (on average 1.5544303797468355) internal successors, (1842), 1190 states have internal predecessors, (1842), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-11-18 20:25:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2035 transitions. [2022-11-18 20:25:06,522 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2035 transitions. Word has length 134 [2022-11-18 20:25:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:06,523 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2035 transitions. [2022-11-18 20:25:06,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2035 transitions. [2022-11-18 20:25:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:06,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:06,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:25:06,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2093287358, now seen corresponding path program 1 times [2022-11-18 20:25:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:06,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219540405] [2022-11-18 20:25:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:06,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219540405] [2022-11-18 20:25:06,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219540405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:06,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:06,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:06,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102581474] [2022-11-18 20:25:06,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:06,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:06,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:06,825 INFO L87 Difference]: Start difference. First operand 1310 states and 2035 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:10,240 INFO L93 Difference]: Finished difference Result 4469 states and 7055 transitions. [2022-11-18 20:25:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:10,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:10,257 INFO L225 Difference]: With dead ends: 4469 [2022-11-18 20:25:10,257 INFO L226 Difference]: Without dead ends: 3176 [2022-11-18 20:25:10,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:25:10,263 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1197 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:10,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1176 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:25:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2022-11-18 20:25:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2330. [2022-11-18 20:25:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5504978662873399) internal successors, (3270), 2118 states have internal predecessors, (3270), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-18 20:25:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3621 transitions. [2022-11-18 20:25:10,587 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3621 transitions. Word has length 134 [2022-11-18 20:25:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:10,587 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3621 transitions. [2022-11-18 20:25:10,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3621 transitions. [2022-11-18 20:25:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:10,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:10,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:25:10,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash 554316996, now seen corresponding path program 1 times [2022-11-18 20:25:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:10,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145380347] [2022-11-18 20:25:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:10,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:10,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145380347] [2022-11-18 20:25:10,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145380347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:10,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:10,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312043527] [2022-11-18 20:25:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:10,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:10,853 INFO L87 Difference]: Start difference. First operand 2330 states and 3621 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:12,808 INFO L93 Difference]: Finished difference Result 5504 states and 8694 transitions. [2022-11-18 20:25:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:25:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:12,827 INFO L225 Difference]: With dead ends: 5504 [2022-11-18 20:25:12,827 INFO L226 Difference]: Without dead ends: 3191 [2022-11-18 20:25:12,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:25:12,835 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 930 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:12,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 755 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:25:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-11-18 20:25:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2330. [2022-11-18 20:25:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5462304409672831) internal successors, (3261), 2118 states have internal predecessors, (3261), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-18 20:25:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3612 transitions. [2022-11-18 20:25:13,276 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3612 transitions. Word has length 134 [2022-11-18 20:25:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:13,276 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3612 transitions. [2022-11-18 20:25:13,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3612 transitions. [2022-11-18 20:25:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:13,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:13,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:13,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:25:13,280 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1577033726, now seen corresponding path program 1 times [2022-11-18 20:25:13,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:13,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19853747] [2022-11-18 20:25:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19853747] [2022-11-18 20:25:13,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19853747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:13,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:13,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957685724] [2022-11-18 20:25:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:13,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:13,536 INFO L87 Difference]: Start difference. First operand 2330 states and 3612 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:15,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:15,643 INFO L93 Difference]: Finished difference Result 5494 states and 8647 transitions. [2022-11-18 20:25:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:25:15,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:15,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:15,664 INFO L225 Difference]: With dead ends: 5494 [2022-11-18 20:25:15,664 INFO L226 Difference]: Without dead ends: 3181 [2022-11-18 20:25:15,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:25:15,671 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 810 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:15,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 898 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:25:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2022-11-18 20:25:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2330. [2022-11-18 20:25:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5419630156472262) internal successors, (3252), 2118 states have internal predecessors, (3252), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-18 20:25:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3603 transitions. [2022-11-18 20:25:16,104 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3603 transitions. Word has length 134 [2022-11-18 20:25:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:16,105 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3603 transitions. [2022-11-18 20:25:16,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3603 transitions. [2022-11-18 20:25:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:16,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:16,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:16,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:25:16,109 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1679348996, now seen corresponding path program 1 times [2022-11-18 20:25:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139393445] [2022-11-18 20:25:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:16,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139393445] [2022-11-18 20:25:16,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139393445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:16,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195253143] [2022-11-18 20:25:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:16,313 INFO L87 Difference]: Start difference. First operand 2330 states and 3603 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:18,117 INFO L93 Difference]: Finished difference Result 5484 states and 8600 transitions. [2022-11-18 20:25:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:25:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:18,133 INFO L225 Difference]: With dead ends: 5484 [2022-11-18 20:25:18,134 INFO L226 Difference]: Without dead ends: 3171 [2022-11-18 20:25:18,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:25:18,141 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 926 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:18,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 755 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:25:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-11-18 20:25:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2330. [2022-11-18 20:25:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5376955903271692) internal successors, (3243), 2118 states have internal predecessors, (3243), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-18 20:25:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3594 transitions. [2022-11-18 20:25:18,650 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3594 transitions. Word has length 134 [2022-11-18 20:25:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:18,650 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3594 transitions. [2022-11-18 20:25:18,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3594 transitions. [2022-11-18 20:25:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:18,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:18,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:18,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:25:18,655 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -293816382, now seen corresponding path program 1 times [2022-11-18 20:25:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214331717] [2022-11-18 20:25:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:18,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214331717] [2022-11-18 20:25:18,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214331717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:18,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:18,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:18,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824939375] [2022-11-18 20:25:18,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:18,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:18,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:18,903 INFO L87 Difference]: Start difference. First operand 2330 states and 3594 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:22,748 INFO L93 Difference]: Finished difference Result 8145 states and 12699 transitions. [2022-11-18 20:25:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:22,776 INFO L225 Difference]: With dead ends: 8145 [2022-11-18 20:25:22,776 INFO L226 Difference]: Without dead ends: 5832 [2022-11-18 20:25:22,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:25:22,784 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1096 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:22,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1770 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:25:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2022-11-18 20:25:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4402. [2022-11-18 20:25:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3989 states have (on average 1.531962897969416) internal successors, (6111), 4006 states have internal predecessors, (6111), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-11-18 20:25:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6796 transitions. [2022-11-18 20:25:23,791 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6796 transitions. Word has length 134 [2022-11-18 20:25:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:23,792 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6796 transitions. [2022-11-18 20:25:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6796 transitions. [2022-11-18 20:25:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:23,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:23,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:23,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:25:23,798 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1859290436, now seen corresponding path program 1 times [2022-11-18 20:25:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:23,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438772010] [2022-11-18 20:25:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:24,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:24,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438772010] [2022-11-18 20:25:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438772010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:24,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:24,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908439925] [2022-11-18 20:25:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:24,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:24,038 INFO L87 Difference]: Start difference. First operand 4402 states and 6796 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:30,081 INFO L93 Difference]: Finished difference Result 17495 states and 27237 transitions. [2022-11-18 20:25:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:25:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:30,149 INFO L225 Difference]: With dead ends: 17495 [2022-11-18 20:25:30,149 INFO L226 Difference]: Without dead ends: 13110 [2022-11-18 20:25:30,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:25:30,166 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1178 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:30,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1760 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 20:25:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2022-11-18 20:25:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 8507. [2022-11-18 20:25:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 7726 states have (on average 1.5305462076106653) internal successors, (11825), 7759 states have internal predecessors, (11825), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2022-11-18 20:25:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 13200 transitions. [2022-11-18 20:25:31,515 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 13200 transitions. Word has length 134 [2022-11-18 20:25:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:31,515 INFO L495 AbstractCegarLoop]: Abstraction has 8507 states and 13200 transitions. [2022-11-18 20:25:31,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 13200 transitions. [2022-11-18 20:25:31,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:31,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:31,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:31,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:25:31,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1236008834, now seen corresponding path program 1 times [2022-11-18 20:25:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:31,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458987948] [2022-11-18 20:25:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:31,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:31,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458987948] [2022-11-18 20:25:31,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458987948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:31,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:31,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:31,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902285686] [2022-11-18 20:25:31,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:31,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:31,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:31,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:31,747 INFO L87 Difference]: Start difference. First operand 8507 states and 13200 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:40,203 INFO L93 Difference]: Finished difference Result 33726 states and 52747 transitions. [2022-11-18 20:25:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:25:40,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:40,313 INFO L225 Difference]: With dead ends: 33726 [2022-11-18 20:25:40,313 INFO L226 Difference]: Without dead ends: 25236 [2022-11-18 20:25:40,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:25:40,350 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1390 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:40,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1756 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:25:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2022-11-18 20:25:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 16540. [2022-11-18 20:25:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16540 states, 15039 states have (on average 1.5300884367311656) internal successors, (23011), 15104 states have internal predecessors, (23011), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2022-11-18 20:25:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16540 states to 16540 states and 25896 transitions. [2022-11-18 20:25:43,582 INFO L78 Accepts]: Start accepts. Automaton has 16540 states and 25896 transitions. Word has length 134 [2022-11-18 20:25:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:43,582 INFO L495 AbstractCegarLoop]: Abstraction has 16540 states and 25896 transitions. [2022-11-18 20:25:43,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16540 states and 25896 transitions. [2022-11-18 20:25:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:25:43,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:43,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:43,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:25:43,595 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1354450308, now seen corresponding path program 1 times [2022-11-18 20:25:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567878622] [2022-11-18 20:25:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:43,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:25:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:25:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:25:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:25:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:43,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567878622] [2022-11-18 20:25:43,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567878622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:43,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:43,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:25:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700435279] [2022-11-18 20:25:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:25:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:43,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:25:43,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:43,808 INFO L87 Difference]: Start difference. First operand 16540 states and 25896 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:25:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:56,578 INFO L93 Difference]: Finished difference Result 64155 states and 101261 transitions. [2022-11-18 20:25:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:25:56,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:25:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:56,830 INFO L225 Difference]: With dead ends: 64155 [2022-11-18 20:25:56,830 INFO L226 Difference]: Without dead ends: 47632 [2022-11-18 20:25:56,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:25:56,902 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1373 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:56,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 1172 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:25:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47632 states. [2022-11-18 20:26:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47632 to 32798. [2022-11-18 20:26:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32798 states, 29889 states have (on average 1.5323028538927363) internal successors, (45799), 30018 states have internal predecessors, (45799), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2022-11-18 20:26:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32798 states to 32798 states and 52126 transitions. [2022-11-18 20:26:02,579 INFO L78 Accepts]: Start accepts. Automaton has 32798 states and 52126 transitions. Word has length 134 [2022-11-18 20:26:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:02,580 INFO L495 AbstractCegarLoop]: Abstraction has 32798 states and 52126 transitions. [2022-11-18 20:26:02,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:26:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 32798 states and 52126 transitions. [2022-11-18 20:26:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:26:02,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:02,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:02,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:26:02,603 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:26:02,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash -678943738, now seen corresponding path program 1 times [2022-11-18 20:26:02,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:02,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110155409] [2022-11-18 20:26:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:02,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:26:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:26:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:26:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:26:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:26:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110155409] [2022-11-18 20:26:02,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110155409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:02,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:02,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:26:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965947288] [2022-11-18 20:26:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:26:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:26:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:26:02,816 INFO L87 Difference]: Start difference. First operand 32798 states and 52126 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:26:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:24,724 INFO L93 Difference]: Finished difference Result 125275 states and 200597 transitions. [2022-11-18 20:26:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:26:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-18 20:26:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:25,304 INFO L225 Difference]: With dead ends: 125275 [2022-11-18 20:26:25,305 INFO L226 Difference]: Without dead ends: 92494 [2022-11-18 20:26:25,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:26:25,394 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1268 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:25,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1760 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:26:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92494 states.