./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8 --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 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 --- 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-2329fc7 [2022-12-13 21:41:06,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:41:06,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:41:06,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:41:06,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:41:06,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:41:06,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:41:06,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:41:06,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:41:06,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:41:06,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:41:06,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:41:06,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:41:06,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:41:06,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:41:06,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:41:06,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:41:06,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:41:06,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:41:06,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:41:06,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:41:06,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:41:06,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:41:06,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:41:06,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:41:06,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:41:06,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:41:06,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:41:06,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:41:06,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:41:06,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:41:06,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:41:06,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:41:06,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:41:06,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:41:06,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:41:06,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:41:06,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:41:06,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:41:06,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:41:06,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:41:06,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:41:06,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:41:06,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:41:06,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:41:06,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:41:06,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:41:06,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:41:06,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:41:06,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:41:06,229 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:41:06,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:41:06,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:41:06,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:41:06,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:41:06,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:41:06,232 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 [2022-12-13 21:41:06,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:41:06,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:41:06,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:41:06,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:41:06,444 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:41:06,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-12-13 21:41:08,964 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:41:09,146 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:41:09,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-12-13 21:41:09,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/data/01e18c9c7/ad743f4fb2d24bc2b7d9374019a6ea41/FLAG8be1d5219 [2022-12-13 21:41:09,545 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/data/01e18c9c7/ad743f4fb2d24bc2b7d9374019a6ea41 [2022-12-13 21:41:09,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:41:09,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:41:09,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:41:09,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:41:09,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:41:09,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682d3452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09, skipping insertion in model container [2022-12-13 21:41:09,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:41:09,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:41:09,726 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2022-12-13 21:41:09,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:41:09,737 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:41:09,776 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2022-12-13 21:41:09,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:41:09,787 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:41:09,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09 WrapperNode [2022-12-13 21:41:09,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:41:09,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:41:09,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:41:09,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:41:09,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,824 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 411 [2022-12-13 21:41:09,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:41:09,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:41:09,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:41:09,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:41:09,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:41:09,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:41:09,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:41:09,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:41:09,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (1/1) ... [2022-12-13 21:41:09,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:41:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:41:09,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:41:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:41:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:41:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:41:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:41:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:41:10,003 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:41:10,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:41:10,377 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:41:10,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:41:10,395 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:41:10,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:41:10 BoogieIcfgContainer [2022-12-13 21:41:10,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:41:10,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:41:10,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:41:10,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:41:10,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:41:09" (1/3) ... [2022-12-13 21:41:10,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7dcc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:41:10, skipping insertion in model container [2022-12-13 21:41:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:41:09" (2/3) ... [2022-12-13 21:41:10,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7dcc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:41:10, skipping insertion in model container [2022-12-13 21:41:10,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:41:10" (3/3) ... [2022-12-13 21:41:10,407 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-12-13 21:41:10,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:41:10,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:41:10,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:41:10,466 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;@16739fb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:41:10,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:41:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.7627118644067796) internal successors, (208), 119 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 21:41:10,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:10,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:10,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1199138120, now seen corresponding path program 1 times [2022-12-13 21:41:10,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:10,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190412275] [2022-12-13 21:41:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:10,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:10,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:10,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190412275] [2022-12-13 21:41:10,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190412275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:10,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:10,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:41:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194424553] [2022-12-13 21:41:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:10,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:41:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:10,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:41:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:41:10,866 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.7627118644067796) internal successors, (208), 119 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:10,950 INFO L93 Difference]: Finished difference Result 197 states and 332 transitions. [2022-12-13 21:41:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:41:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-13 21:41:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:10,959 INFO L225 Difference]: With dead ends: 197 [2022-12-13 21:41:10,959 INFO L226 Difference]: Without dead ends: 116 [2022-12-13 21:41:10,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:41:10,963 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:10,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 768 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-13 21:41:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-12-13 21:41:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.391304347826087) internal successors, (160), 115 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2022-12-13 21:41:10,990 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 160 transitions. Word has length 37 [2022-12-13 21:41:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:10,991 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 160 transitions. [2022-12-13 21:41:10,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 160 transitions. [2022-12-13 21:41:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 21:41:10,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:10,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:10,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:41:10,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1556169746, now seen corresponding path program 1 times [2022-12-13 21:41:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423106542] [2022-12-13 21:41:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:11,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:11,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423106542] [2022-12-13 21:41:11,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423106542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:11,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:11,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603103247] [2022-12-13 21:41:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:11,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:11,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:11,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:11,079 INFO L87 Difference]: Start difference. First operand 116 states and 160 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:11,105 INFO L93 Difference]: Finished difference Result 246 states and 372 transitions. [2022-12-13 21:41:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:11,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 21:41:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:11,107 INFO L225 Difference]: With dead ends: 246 [2022-12-13 21:41:11,107 INFO L226 Difference]: Without dead ends: 177 [2022-12-13 21:41:11,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:11,108 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 97 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:11,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 354 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-13 21:41:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-12-13 21:41:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4770114942528736) internal successors, (257), 174 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2022-12-13 21:41:11,129 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 77 [2022-12-13 21:41:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:11,129 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2022-12-13 21:41:11,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2022-12-13 21:41:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 21:41:11,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:11,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:11,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:41:11,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1133879341, now seen corresponding path program 1 times [2022-12-13 21:41:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098275744] [2022-12-13 21:41:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:11,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:11,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098275744] [2022-12-13 21:41:11,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098275744] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:11,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:11,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:11,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705046049] [2022-12-13 21:41:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:11,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:11,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:11,229 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:11,255 INFO L93 Difference]: Finished difference Result 415 states and 649 transitions. [2022-12-13 21:41:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 21:41:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:11,257 INFO L225 Difference]: With dead ends: 415 [2022-12-13 21:41:11,257 INFO L226 Difference]: Without dead ends: 287 [2022-12-13 21:41:11,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:11,258 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 93 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:11,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 351 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-13 21:41:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-12-13 21:41:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.5352112676056338) internal successors, (436), 284 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 436 transitions. [2022-12-13 21:41:11,275 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 436 transitions. Word has length 77 [2022-12-13 21:41:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:11,275 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 436 transitions. [2022-12-13 21:41:11,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 436 transitions. [2022-12-13 21:41:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 21:41:11,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:11,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:41:11,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1733196780, now seen corresponding path program 1 times [2022-12-13 21:41:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:11,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523016253] [2022-12-13 21:41:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:11,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523016253] [2022-12-13 21:41:11,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523016253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:11,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:11,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:11,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424867019] [2022-12-13 21:41:11,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:11,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:11,340 INFO L87 Difference]: Start difference. First operand 285 states and 436 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:11,372 INFO L93 Difference]: Finished difference Result 729 states and 1158 transitions. [2022-12-13 21:41:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 21:41:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:11,374 INFO L225 Difference]: With dead ends: 729 [2022-12-13 21:41:11,374 INFO L226 Difference]: Without dead ends: 491 [2022-12-13 21:41:11,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:11,375 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 81 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:11,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 322 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:11,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-12-13 21:41:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2022-12-13 21:41:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.5655737704918034) internal successors, (764), 488 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 764 transitions. [2022-12-13 21:41:11,398 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 764 transitions. Word has length 77 [2022-12-13 21:41:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:11,398 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 764 transitions. [2022-12-13 21:41:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 764 transitions. [2022-12-13 21:41:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 21:41:11,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:11,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:11,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:41:11,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1667514837, now seen corresponding path program 1 times [2022-12-13 21:41:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:11,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534294784] [2022-12-13 21:41:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:11,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:11,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534294784] [2022-12-13 21:41:11,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534294784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:11,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:11,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:11,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385030008] [2022-12-13 21:41:11,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:11,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:11,554 INFO L87 Difference]: Start difference. First operand 489 states and 764 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:11,823 INFO L93 Difference]: Finished difference Result 3583 states and 5783 transitions. [2022-12-13 21:41:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 21:41:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:11,832 INFO L225 Difference]: With dead ends: 3583 [2022-12-13 21:41:11,832 INFO L226 Difference]: Without dead ends: 3141 [2022-12-13 21:41:11,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:41:11,834 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1834 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:11,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1388 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:41:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2022-12-13 21:41:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 929. [2022-12-13 21:41:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.5775862068965518) internal successors, (1464), 928 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1464 transitions. [2022-12-13 21:41:11,900 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1464 transitions. Word has length 77 [2022-12-13 21:41:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:11,900 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1464 transitions. [2022-12-13 21:41:11,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1464 transitions. [2022-12-13 21:41:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 21:41:11,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:11,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:11,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:41:11,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash -229970796, now seen corresponding path program 1 times [2022-12-13 21:41:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:11,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130760605] [2022-12-13 21:41:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:11,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:12,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:12,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130760605] [2022-12-13 21:41:12,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130760605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:12,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:12,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:41:12,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730054300] [2022-12-13 21:41:12,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:12,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:41:12,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:12,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:41:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:41:12,071 INFO L87 Difference]: Start difference. First operand 929 states and 1464 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:12,213 INFO L93 Difference]: Finished difference Result 1875 states and 2945 transitions. [2022-12-13 21:41:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:41:12,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 21:41:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:12,218 INFO L225 Difference]: With dead ends: 1875 [2022-12-13 21:41:12,218 INFO L226 Difference]: Without dead ends: 1873 [2022-12-13 21:41:12,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:12,219 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 318 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:12,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 710 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-12-13 21:41:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 977. [2022-12-13 21:41:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.5491803278688525) internal successors, (1512), 976 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1512 transitions. [2022-12-13 21:41:12,293 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1512 transitions. Word has length 78 [2022-12-13 21:41:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:12,293 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1512 transitions. [2022-12-13 21:41:12,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1512 transitions. [2022-12-13 21:41:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 21:41:12,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:12,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:12,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:41:12,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1513418637, now seen corresponding path program 1 times [2022-12-13 21:41:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:12,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783790624] [2022-12-13 21:41:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:12,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783790624] [2022-12-13 21:41:12,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783790624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:12,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:12,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870597583] [2022-12-13 21:41:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:12,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:12,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:12,347 INFO L87 Difference]: Start difference. First operand 977 states and 1512 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:12,466 INFO L93 Difference]: Finished difference Result 2717 states and 4242 transitions. [2022-12-13 21:41:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-13 21:41:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:12,471 INFO L225 Difference]: With dead ends: 2717 [2022-12-13 21:41:12,471 INFO L226 Difference]: Without dead ends: 1787 [2022-12-13 21:41:12,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:12,473 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 74 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:12,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 270 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2022-12-13 21:41:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1785. [2022-12-13 21:41:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 1.547085201793722) internal successors, (2760), 1784 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2760 transitions. [2022-12-13 21:41:12,578 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2760 transitions. Word has length 79 [2022-12-13 21:41:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:12,579 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 2760 transitions. [2022-12-13 21:41:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2760 transitions. [2022-12-13 21:41:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 21:41:12,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:12,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:12,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:41:12,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1039605999, now seen corresponding path program 1 times [2022-12-13 21:41:12,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:12,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471600998] [2022-12-13 21:41:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:12,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:12,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471600998] [2022-12-13 21:41:12,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471600998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:12,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:12,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:12,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882482592] [2022-12-13 21:41:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:12,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:12,633 INFO L87 Difference]: Start difference. First operand 1785 states and 2760 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:12,797 INFO L93 Difference]: Finished difference Result 3535 states and 5501 transitions. [2022-12-13 21:41:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-13 21:41:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:12,806 INFO L225 Difference]: With dead ends: 3535 [2022-12-13 21:41:12,806 INFO L226 Difference]: Without dead ends: 2605 [2022-12-13 21:41:12,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:12,808 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 101 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:12,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2022-12-13 21:41:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2603. [2022-12-13 21:41:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 1.544196771714066) internal successors, (4018), 2602 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 4018 transitions. [2022-12-13 21:41:13,001 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 4018 transitions. Word has length 79 [2022-12-13 21:41:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:13,001 INFO L495 AbstractCegarLoop]: Abstraction has 2603 states and 4018 transitions. [2022-12-13 21:41:13,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 4018 transitions. [2022-12-13 21:41:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 21:41:13,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:13,002 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] [2022-12-13 21:41:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:41:13,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:13,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1131505421, now seen corresponding path program 1 times [2022-12-13 21:41:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:13,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044322286] [2022-12-13 21:41:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:13,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:13,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044322286] [2022-12-13 21:41:13,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044322286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:13,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:13,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215526338] [2022-12-13 21:41:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:13,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:13,048 INFO L87 Difference]: Start difference. First operand 2603 states and 4018 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:13,344 INFO L93 Difference]: Finished difference Result 7327 states and 11284 transitions. [2022-12-13 21:41:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:13,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 21:41:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:13,355 INFO L225 Difference]: With dead ends: 7327 [2022-12-13 21:41:13,355 INFO L226 Difference]: Without dead ends: 4773 [2022-12-13 21:41:13,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:13,358 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 85 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:13,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 345 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2022-12-13 21:41:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4771. [2022-12-13 21:41:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4771 states, 4770 states have (on average 1.5232704402515724) internal successors, (7266), 4770 states have internal predecessors, (7266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 7266 transitions. [2022-12-13 21:41:13,631 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 7266 transitions. Word has length 80 [2022-12-13 21:41:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:13,631 INFO L495 AbstractCegarLoop]: Abstraction has 4771 states and 7266 transitions. [2022-12-13 21:41:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 7266 transitions. [2022-12-13 21:41:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 21:41:13,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:13,632 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] [2022-12-13 21:41:13,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:41:13,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash -225664531, now seen corresponding path program 1 times [2022-12-13 21:41:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:13,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749187168] [2022-12-13 21:41:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:13,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:13,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749187168] [2022-12-13 21:41:13,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749187168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:13,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893675461] [2022-12-13 21:41:13,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:13,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:13,673 INFO L87 Difference]: Start difference. First operand 4771 states and 7266 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:14,203 INFO L93 Difference]: Finished difference Result 13447 states and 20356 transitions. [2022-12-13 21:41:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 21:41:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:14,225 INFO L225 Difference]: With dead ends: 13447 [2022-12-13 21:41:14,225 INFO L226 Difference]: Without dead ends: 8725 [2022-12-13 21:41:14,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:14,229 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 89 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:14,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8725 states. [2022-12-13 21:41:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8725 to 8723. [2022-12-13 21:41:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8723 states, 8722 states have (on average 1.4952992432928227) internal successors, (13042), 8722 states have internal predecessors, (13042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 13042 transitions. [2022-12-13 21:41:14,875 INFO L78 Accepts]: Start accepts. Automaton has 8723 states and 13042 transitions. Word has length 80 [2022-12-13 21:41:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:14,875 INFO L495 AbstractCegarLoop]: Abstraction has 8723 states and 13042 transitions. [2022-12-13 21:41:14,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8723 states and 13042 transitions. [2022-12-13 21:41:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 21:41:14,880 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:14,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:14,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:41:14,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1666554688, now seen corresponding path program 1 times [2022-12-13 21:41:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:14,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869612662] [2022-12-13 21:41:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:14,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:14,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869612662] [2022-12-13 21:41:14,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869612662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:14,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:14,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:14,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189627173] [2022-12-13 21:41:14,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:14,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:14,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:14,985 INFO L87 Difference]: Start difference. First operand 8723 states and 13042 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:15,431 INFO L93 Difference]: Finished difference Result 17399 states and 26036 transitions. [2022-12-13 21:41:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:15,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 21:41:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:15,447 INFO L225 Difference]: With dead ends: 17399 [2022-12-13 21:41:15,447 INFO L226 Difference]: Without dead ends: 8725 [2022-12-13 21:41:15,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:15,455 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 78 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:15,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 350 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8725 states. [2022-12-13 21:41:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8725 to 8723. [2022-12-13 21:41:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8723 states, 8722 states have (on average 1.4842925934418711) internal successors, (12946), 8722 states have internal predecessors, (12946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 12946 transitions. [2022-12-13 21:41:16,051 INFO L78 Accepts]: Start accepts. Automaton has 8723 states and 12946 transitions. Word has length 110 [2022-12-13 21:41:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:16,051 INFO L495 AbstractCegarLoop]: Abstraction has 8723 states and 12946 transitions. [2022-12-13 21:41:16,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8723 states and 12946 transitions. [2022-12-13 21:41:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 21:41:16,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:16,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:16,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:41:16,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash -267049921, now seen corresponding path program 1 times [2022-12-13 21:41:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:16,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454743843] [2022-12-13 21:41:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:16,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:16,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454743843] [2022-12-13 21:41:16,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454743843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:16,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:16,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:41:16,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094826064] [2022-12-13 21:41:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:41:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:41:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:16,160 INFO L87 Difference]: Start difference. First operand 8723 states and 12946 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:16,525 INFO L93 Difference]: Finished difference Result 13063 states and 19396 transitions. [2022-12-13 21:41:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 21:41:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:16,530 INFO L225 Difference]: With dead ends: 13063 [2022-12-13 21:41:16,531 INFO L226 Difference]: Without dead ends: 4389 [2022-12-13 21:41:16,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:41:16,536 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 72 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:16,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 331 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:16,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-12-13 21:41:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4387. [2022-12-13 21:41:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 1.4705882352941178) internal successors, (6450), 4386 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6450 transitions. [2022-12-13 21:41:16,771 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6450 transitions. Word has length 110 [2022-12-13 21:41:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:16,772 INFO L495 AbstractCegarLoop]: Abstraction has 4387 states and 6450 transitions. [2022-12-13 21:41:16,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6450 transitions. [2022-12-13 21:41:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 21:41:16,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:16,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:16,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:41:16,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1752073410, now seen corresponding path program 1 times [2022-12-13 21:41:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:16,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59873753] [2022-12-13 21:41:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:41:16,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:16,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59873753] [2022-12-13 21:41:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59873753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:41:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530460978] [2022-12-13 21:41:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:16,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:41:16,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:41:16,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:41:16,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:41:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:17,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:41:17,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:41:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:41:17,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:41:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:41:17,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530460978] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:41:17,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:41:17,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-12-13 21:41:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317933683] [2022-12-13 21:41:17,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:41:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:41:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:41:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:41:17,581 INFO L87 Difference]: Start difference. First operand 4387 states and 6450 transitions. Second operand has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:18,482 INFO L93 Difference]: Finished difference Result 16329 states and 24262 transitions. [2022-12-13 21:41:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 21:41:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:18,495 INFO L225 Difference]: With dead ends: 16329 [2022-12-13 21:41:18,495 INFO L226 Difference]: Without dead ends: 13351 [2022-12-13 21:41:18,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:41:18,498 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 884 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1196 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:41:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2022-12-13 21:41:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 12739. [2022-12-13 21:41:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12739 states, 12738 states have (on average 1.4710315591144607) internal successors, (18738), 12738 states have internal predecessors, (18738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12739 states to 12739 states and 18738 transitions. [2022-12-13 21:41:19,344 INFO L78 Accepts]: Start accepts. Automaton has 12739 states and 18738 transitions. Word has length 110 [2022-12-13 21:41:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:19,344 INFO L495 AbstractCegarLoop]: Abstraction has 12739 states and 18738 transitions. [2022-12-13 21:41:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12739 states and 18738 transitions. [2022-12-13 21:41:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 21:41:19,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:19,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:19,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:41:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:41:19,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash -988398793, now seen corresponding path program 1 times [2022-12-13 21:41:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:19,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113473325] [2022-12-13 21:41:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:19,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:19,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113473325] [2022-12-13 21:41:19,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113473325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:19,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:19,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814576794] [2022-12-13 21:41:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:19,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:19,710 INFO L87 Difference]: Start difference. First operand 12739 states and 18738 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:22,408 INFO L93 Difference]: Finished difference Result 51009 states and 75361 transitions. [2022-12-13 21:41:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 21:41:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:22,452 INFO L225 Difference]: With dead ends: 51009 [2022-12-13 21:41:22,452 INFO L226 Difference]: Without dead ends: 44447 [2022-12-13 21:41:22,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:41:22,463 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1140 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:22,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 1735 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:41:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44447 states. [2022-12-13 21:41:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44447 to 18963. [2022-12-13 21:41:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18963 states, 18962 states have (on average 1.4687269275392891) internal successors, (27850), 18962 states have internal predecessors, (27850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18963 states to 18963 states and 27850 transitions. [2022-12-13 21:41:23,886 INFO L78 Accepts]: Start accepts. Automaton has 18963 states and 27850 transitions. Word has length 111 [2022-12-13 21:41:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:23,886 INFO L495 AbstractCegarLoop]: Abstraction has 18963 states and 27850 transitions. [2022-12-13 21:41:23,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 18963 states and 27850 transitions. [2022-12-13 21:41:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 21:41:23,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:23,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:23,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:41:23,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -538557447, now seen corresponding path program 1 times [2022-12-13 21:41:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:23,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689794356] [2022-12-13 21:41:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:41:24,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:24,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689794356] [2022-12-13 21:41:24,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689794356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:24,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:24,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982319623] [2022-12-13 21:41:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:24,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:24,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:24,023 INFO L87 Difference]: Start difference. First operand 18963 states and 27850 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:27,784 INFO L93 Difference]: Finished difference Result 57233 states and 84473 transitions. [2022-12-13 21:41:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:27,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 21:41:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:27,838 INFO L225 Difference]: With dead ends: 57233 [2022-12-13 21:41:27,838 INFO L226 Difference]: Without dead ends: 50671 [2022-12-13 21:41:27,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:41:27,849 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1187 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:27,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1591 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:41:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50671 states. [2022-12-13 21:41:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50671 to 25187. [2022-12-13 21:41:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25187 states, 25186 states have (on average 1.4675613436035893) internal successors, (36962), 25186 states have internal predecessors, (36962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25187 states to 25187 states and 36962 transitions. [2022-12-13 21:41:29,968 INFO L78 Accepts]: Start accepts. Automaton has 25187 states and 36962 transitions. Word has length 111 [2022-12-13 21:41:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:29,969 INFO L495 AbstractCegarLoop]: Abstraction has 25187 states and 36962 transitions. [2022-12-13 21:41:29,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 25187 states and 36962 transitions. [2022-12-13 21:41:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 21:41:29,971 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:29,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:29,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:41:29,972 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1141702075, now seen corresponding path program 1 times [2022-12-13 21:41:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:29,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513403876] [2022-12-13 21:41:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:29,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:41:30,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:30,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513403876] [2022-12-13 21:41:30,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513403876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:30,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:30,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183254062] [2022-12-13 21:41:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:30,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:30,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:30,113 INFO L87 Difference]: Start difference. First operand 25187 states and 36962 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:34,818 INFO L93 Difference]: Finished difference Result 63457 states and 93585 transitions. [2022-12-13 21:41:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 21:41:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:34,872 INFO L225 Difference]: With dead ends: 63457 [2022-12-13 21:41:34,872 INFO L226 Difference]: Without dead ends: 56895 [2022-12-13 21:41:34,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:41:34,883 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1269 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:34,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1516 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:41:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56895 states. [2022-12-13 21:41:37,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56895 to 31411. [2022-12-13 21:41:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31411 states, 31410 states have (on average 1.4668576886341929) internal successors, (46074), 31410 states have internal predecessors, (46074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31411 states to 31411 states and 46074 transitions. [2022-12-13 21:41:37,880 INFO L78 Accepts]: Start accepts. Automaton has 31411 states and 46074 transitions. Word has length 111 [2022-12-13 21:41:37,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:37,880 INFO L495 AbstractCegarLoop]: Abstraction has 31411 states and 46074 transitions. [2022-12-13 21:41:37,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 31411 states and 46074 transitions. [2022-12-13 21:41:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 21:41:37,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:37,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:37,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:41:37,882 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1116399741, now seen corresponding path program 1 times [2022-12-13 21:41:37,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:37,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630194308] [2022-12-13 21:41:37,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:37,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 21:41:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:37,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630194308] [2022-12-13 21:41:37,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630194308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:37,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:37,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465199038] [2022-12-13 21:41:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:37,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:37,987 INFO L87 Difference]: Start difference. First operand 31411 states and 46074 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:43,768 INFO L93 Difference]: Finished difference Result 69681 states and 102697 transitions. [2022-12-13 21:41:43,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:43,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 21:41:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:43,831 INFO L225 Difference]: With dead ends: 69681 [2022-12-13 21:41:43,831 INFO L226 Difference]: Without dead ends: 63119 [2022-12-13 21:41:43,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:41:43,844 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1361 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:43,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1551 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:41:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63119 states. [2022-12-13 21:41:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63119 to 37635. [2022-12-13 21:41:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37635 states, 37634 states have (on average 1.4663867779135888) internal successors, (55186), 37634 states have internal predecessors, (55186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37635 states to 37635 states and 55186 transitions. [2022-12-13 21:41:47,290 INFO L78 Accepts]: Start accepts. Automaton has 37635 states and 55186 transitions. Word has length 111 [2022-12-13 21:41:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:47,290 INFO L495 AbstractCegarLoop]: Abstraction has 37635 states and 55186 transitions. [2022-12-13 21:41:47,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 37635 states and 55186 transitions. [2022-12-13 21:41:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 21:41:47,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:47,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:41:47,294 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1063222209, now seen corresponding path program 1 times [2022-12-13 21:41:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:47,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475825324] [2022-12-13 21:41:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:47,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 21:41:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475825324] [2022-12-13 21:41:47,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475825324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:47,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:47,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854468106] [2022-12-13 21:41:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:47,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:47,436 INFO L87 Difference]: Start difference. First operand 37635 states and 55186 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:41:53,815 INFO L93 Difference]: Finished difference Result 75905 states and 111809 transitions. [2022-12-13 21:41:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:41:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 21:41:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:41:53,880 INFO L225 Difference]: With dead ends: 75905 [2022-12-13 21:41:53,880 INFO L226 Difference]: Without dead ends: 69343 [2022-12-13 21:41:53,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:41:53,894 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1169 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:41:53,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1733 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:41:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69343 states. [2022-12-13 21:41:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69343 to 43859. [2022-12-13 21:41:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43859 states, 43858 states have (on average 1.4660495234620823) internal successors, (64298), 43858 states have internal predecessors, (64298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 64298 transitions. [2022-12-13 21:41:58,360 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 64298 transitions. Word has length 111 [2022-12-13 21:41:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:41:58,361 INFO L495 AbstractCegarLoop]: Abstraction has 43859 states and 64298 transitions. [2022-12-13 21:41:58,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 64298 transitions. [2022-12-13 21:41:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 21:41:58,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:41:58,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:58,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:41:58,362 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:41:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1254118294, now seen corresponding path program 1 times [2022-12-13 21:41:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:58,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476169668] [2022-12-13 21:41:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:58,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:41:58,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:58,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476169668] [2022-12-13 21:41:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476169668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:58,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:58,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603048235] [2022-12-13 21:41:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:58,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:58,504 INFO L87 Difference]: Start difference. First operand 43859 states and 64298 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:06,213 INFO L93 Difference]: Finished difference Result 80049 states and 117793 transitions. [2022-12-13 21:42:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:42:06,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 21:42:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:06,289 INFO L225 Difference]: With dead ends: 80049 [2022-12-13 21:42:06,289 INFO L226 Difference]: Without dead ends: 74847 [2022-12-13 21:42:06,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:42:06,304 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1135 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:06,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 2029 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:42:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74847 states. [2022-12-13 21:42:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74847 to 49363. [2022-12-13 21:42:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49363 states, 49362 states have (on average 1.4652971921721163) internal successors, (72330), 49362 states have internal predecessors, (72330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49363 states to 49363 states and 72330 transitions. [2022-12-13 21:42:11,553 INFO L78 Accepts]: Start accepts. Automaton has 49363 states and 72330 transitions. Word has length 111 [2022-12-13 21:42:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:11,554 INFO L495 AbstractCegarLoop]: Abstraction has 49363 states and 72330 transitions. [2022-12-13 21:42:11,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 49363 states and 72330 transitions. [2022-12-13 21:42:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 21:42:11,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:11,556 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:11,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:42:11,556 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:42:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash -362328604, now seen corresponding path program 1 times [2022-12-13 21:42:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:42:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294387648] [2022-12-13 21:42:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:42:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:42:11,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294387648] [2022-12-13 21:42:11,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294387648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:11,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:11,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:42:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93701071] [2022-12-13 21:42:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:42:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:42:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:42:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:42:11,613 INFO L87 Difference]: Start difference. First operand 49363 states and 72330 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:13,804 INFO L93 Difference]: Finished difference Result 69676 states and 101915 transitions. [2022-12-13 21:42:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:42:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 21:42:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:13,823 INFO L225 Difference]: With dead ends: 69676 [2022-12-13 21:42:13,823 INFO L226 Difference]: Without dead ends: 20362 [2022-12-13 21:42:13,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:42:13,843 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 60 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:13,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 329 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:42:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20362 states. [2022-12-13 21:42:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20362 to 19976. [2022-12-13 21:42:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19976 states, 19975 states have (on average 1.4510137672090113) internal successors, (28984), 19975 states have internal predecessors, (28984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19976 states to 19976 states and 28984 transitions. [2022-12-13 21:42:15,989 INFO L78 Accepts]: Start accepts. Automaton has 19976 states and 28984 transitions. Word has length 114 [2022-12-13 21:42:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:15,989 INFO L495 AbstractCegarLoop]: Abstraction has 19976 states and 28984 transitions. [2022-12-13 21:42:15,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:15,989 INFO L276 IsEmpty]: Start isEmpty. Operand 19976 states and 28984 transitions. [2022-12-13 21:42:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 21:42:15,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:15,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:15,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 21:42:15,990 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:42:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:15,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2093046883, now seen corresponding path program 1 times [2022-12-13 21:42:15,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:42:15,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921261436] [2022-12-13 21:42:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:15,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:42:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:16,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:42:16,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921261436] [2022-12-13 21:42:16,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921261436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:42:16,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107695645] [2022-12-13 21:42:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:16,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:42:16,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:42:16,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:42:16,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:42:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:16,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:42:16,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:17,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:42:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:17,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107695645] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:42:17,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:42:17,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-12-13 21:42:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719159132] [2022-12-13 21:42:17,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:42:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 21:42:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:42:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 21:42:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-12-13 21:42:17,938 INFO L87 Difference]: Start difference. First operand 19976 states and 28984 transitions. Second operand has 26 states, 26 states have (on average 12.0) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:37,485 INFO L93 Difference]: Finished difference Result 500464 states and 720183 transitions. [2022-12-13 21:43:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-12-13 21:43:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.0) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 21:43:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:38,176 INFO L225 Difference]: With dead ends: 500464 [2022-12-13 21:43:38,176 INFO L226 Difference]: Without dead ends: 480847 [2022-12-13 21:43:38,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20006 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=6981, Invalid=42081, Unknown=0, NotChecked=0, Total=49062 [2022-12-13 21:43:38,259 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 16782 mSDsluCounter, 6980 mSDsCounter, 0 mSdLazyCounter, 5818 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16782 SdHoareTripleChecker+Valid, 7872 SdHoareTripleChecker+Invalid, 5922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:38,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16782 Valid, 7872 Invalid, 5922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5818 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 21:43:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480847 states. [2022-12-13 21:43:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480847 to 103843. [2022-12-13 21:43:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103843 states, 103842 states have (on average 1.43863754550182) internal successors, (149391), 103842 states have internal predecessors, (149391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103843 states to 103843 states and 149391 transitions. [2022-12-13 21:43:57,205 INFO L78 Accepts]: Start accepts. Automaton has 103843 states and 149391 transitions. Word has length 114 [2022-12-13 21:43:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:57,205 INFO L495 AbstractCegarLoop]: Abstraction has 103843 states and 149391 transitions. [2022-12-13 21:43:57,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.0) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 103843 states and 149391 transitions. [2022-12-13 21:43:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 21:43:57,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:57,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:57,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:43:57,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 21:43:57,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:43:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash -158595322, now seen corresponding path program 1 times [2022-12-13 21:43:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:43:57,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317743289] [2022-12-13 21:43:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:43:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:57,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:43:57,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317743289] [2022-12-13 21:43:57,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317743289] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:57,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:57,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:43:57,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879911557] [2022-12-13 21:43:57,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:57,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:43:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:43:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:43:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:43:57,480 INFO L87 Difference]: Start difference. First operand 103843 states and 149391 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:07,121 INFO L93 Difference]: Finished difference Result 155489 states and 223538 transitions. [2022-12-13 21:44:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:07,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 21:44:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:07,177 INFO L225 Difference]: With dead ends: 155489 [2022-12-13 21:44:07,177 INFO L226 Difference]: Without dead ends: 59431 [2022-12-13 21:44:07,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:07,205 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 51 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:07,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 307 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:44:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59431 states. [2022-12-13 21:44:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59431 to 58553. [2022-12-13 21:44:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58553 states, 58552 states have (on average 1.4172701188686978) internal successors, (82984), 58552 states have internal predecessors, (82984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58553 states to 58553 states and 82984 transitions. [2022-12-13 21:44:16,532 INFO L78 Accepts]: Start accepts. Automaton has 58553 states and 82984 transitions. Word has length 114 [2022-12-13 21:44:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:16,532 INFO L495 AbstractCegarLoop]: Abstraction has 58553 states and 82984 transitions. [2022-12-13 21:44:16,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 58553 states and 82984 transitions. [2022-12-13 21:44:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 21:44:16,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:16,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 21:44:16,534 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash -79577816, now seen corresponding path program 1 times [2022-12-13 21:44:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:16,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331098608] [2022-12-13 21:44:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331098608] [2022-12-13 21:44:17,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331098608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308852220] [2022-12-13 21:44:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:17,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:17,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:17,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:17,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:44:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:17,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:44:17,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:18,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:19,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308852220] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:19,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:19,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2022-12-13 21:44:19,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930163974] [2022-12-13 21:44:19,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:19,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 21:44:19,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 21:44:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-12-13 21:44:19,465 INFO L87 Difference]: Start difference. First operand 58553 states and 82984 transitions. Second operand has 27 states, 27 states have (on average 11.185185185185185) internal successors, (302), 26 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:15,229 INFO L93 Difference]: Finished difference Result 357725 states and 504109 transitions. [2022-12-13 21:45:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 21:45:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.185185185185185) internal successors, (302), 26 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 21:45:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:15,596 INFO L225 Difference]: With dead ends: 357725 [2022-12-13 21:45:15,596 INFO L226 Difference]: Without dead ends: 308809 [2022-12-13 21:45:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=576, Invalid=1776, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 21:45:15,645 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 2207 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:15,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 2457 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 21:45:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308809 states. [2022-12-13 21:45:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308809 to 134984. [2022-12-13 21:45:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134984 states, 134983 states have (on average 1.413363164250313) internal successors, (190780), 134983 states have internal predecessors, (190780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134984 states to 134984 states and 190780 transitions. [2022-12-13 21:45:41,833 INFO L78 Accepts]: Start accepts. Automaton has 134984 states and 190780 transitions. Word has length 114 [2022-12-13 21:45:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:41,833 INFO L495 AbstractCegarLoop]: Abstraction has 134984 states and 190780 transitions. [2022-12-13 21:45:41,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.185185185185185) internal successors, (302), 26 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 134984 states and 190780 transitions. [2022-12-13 21:45:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 21:45:41,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:41,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:41,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:45:42,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 21:45:42,038 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:45:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash -973833495, now seen corresponding path program 1 times [2022-12-13 21:45:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:42,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258105271] [2022-12-13 21:45:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258105271] [2022-12-13 21:45:42,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258105271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:42,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:42,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:45:42,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232183355] [2022-12-13 21:45:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:42,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:45:42,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:45:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:45:42,100 INFO L87 Difference]: Start difference. First operand 134984 states and 190780 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:57,702 INFO L93 Difference]: Finished difference Result 202696 states and 286255 transitions. [2022-12-13 21:45:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:45:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 21:45:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:57,776 INFO L225 Difference]: With dead ends: 202696 [2022-12-13 21:45:57,776 INFO L226 Difference]: Without dead ends: 76948 [2022-12-13 21:45:57,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:45:57,811 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 50 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:57,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 282 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:45:57,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76948 states. [2022-12-13 21:46:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76948 to 76946. [2022-12-13 21:46:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76946 states, 76945 states have (on average 1.3933069075313536) internal successors, (107208), 76945 states have internal predecessors, (107208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76946 states to 76946 states and 107208 transitions. [2022-12-13 21:46:11,355 INFO L78 Accepts]: Start accepts. Automaton has 76946 states and 107208 transitions. Word has length 114 [2022-12-13 21:46:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:46:11,355 INFO L495 AbstractCegarLoop]: Abstraction has 76946 states and 107208 transitions. [2022-12-13 21:46:11,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 76946 states and 107208 transitions. [2022-12-13 21:46:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 21:46:11,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:46:11,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:11,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 21:46:11,358 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:46:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1752808511, now seen corresponding path program 1 times [2022-12-13 21:46:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:11,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822394156] [2022-12-13 21:46:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:11,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:11,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822394156] [2022-12-13 21:46:11,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822394156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:11,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:11,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:46:11,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673643751] [2022-12-13 21:46:11,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:11,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:46:11,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:46:11,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:46:11,392 INFO L87 Difference]: Start difference. First operand 76946 states and 107208 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:46:35,353 INFO L93 Difference]: Finished difference Result 209235 states and 290225 transitions. [2022-12-13 21:46:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:46:35,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 21:46:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:46:35,485 INFO L225 Difference]: With dead ends: 209235 [2022-12-13 21:46:35,485 INFO L226 Difference]: Without dead ends: 132978 [2022-12-13 21:46:35,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:46:35,518 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 73 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:46:35,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:46:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132978 states. [2022-12-13 21:46:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132978 to 129047. [2022-12-13 21:46:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129047 states, 129046 states have (on average 1.373889930722378) internal successors, (177295), 129046 states have internal predecessors, (177295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129047 states to 129047 states and 177295 transitions. [2022-12-13 21:46:59,696 INFO L78 Accepts]: Start accepts. Automaton has 129047 states and 177295 transitions. Word has length 115 [2022-12-13 21:46:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:46:59,696 INFO L495 AbstractCegarLoop]: Abstraction has 129047 states and 177295 transitions. [2022-12-13 21:46:59,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 129047 states and 177295 transitions. [2022-12-13 21:46:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 21:46:59,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:46:59,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 21:46:59,701 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:46:59,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1086690895, now seen corresponding path program 1 times [2022-12-13 21:46:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:59,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246166320] [2022-12-13 21:46:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:59,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:59,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246166320] [2022-12-13 21:46:59,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246166320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:59,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:59,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:46:59,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044009901] [2022-12-13 21:46:59,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:59,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:46:59,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:59,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:46:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:46:59,734 INFO L87 Difference]: Start difference. First operand 129047 states and 177295 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:47:22,458 INFO L93 Difference]: Finished difference Result 189532 states and 259830 transitions. [2022-12-13 21:47:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:47:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 21:47:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:47:22,579 INFO L225 Difference]: With dead ends: 189532 [2022-12-13 21:47:22,579 INFO L226 Difference]: Without dead ends: 120873 [2022-12-13 21:47:22,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:47:22,611 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 77 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:47:22,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 344 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:47:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120873 states. [2022-12-13 21:47:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120873 to 120871. [2022-12-13 21:47:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120871 states, 120870 states have (on average 1.3648630760321006) internal successors, (164971), 120870 states have internal predecessors, (164971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120871 states to 120871 states and 164971 transitions. [2022-12-13 21:47:45,555 INFO L78 Accepts]: Start accepts. Automaton has 120871 states and 164971 transitions. Word has length 115 [2022-12-13 21:47:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:47:45,556 INFO L495 AbstractCegarLoop]: Abstraction has 120871 states and 164971 transitions. [2022-12-13 21:47:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 120871 states and 164971 transitions. [2022-12-13 21:47:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 21:47:45,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:47:45,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:47:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 21:47:45,561 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:47:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:47:45,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1724612387, now seen corresponding path program 1 times [2022-12-13 21:47:45,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:47:45,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452909494] [2022-12-13 21:47:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:47:45,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:47:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:47:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:47:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:47:45,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452909494] [2022-12-13 21:47:45,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452909494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:47:45,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:47:45,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:47:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565434820] [2022-12-13 21:47:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:47:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:47:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:47:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:47:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:47:45,599 INFO L87 Difference]: Start difference. First operand 120871 states and 164971 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:48:29,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:48:29,225 INFO L93 Difference]: Finished difference Result 339381 states and 461197 transitions. [2022-12-13 21:48:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:48:29,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 21:48:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:48:29,474 INFO L225 Difference]: With dead ends: 339381 [2022-12-13 21:48:29,475 INFO L226 Difference]: Without dead ends: 221543 [2022-12-13 21:48:29,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:48:29,538 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 74 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:48:29,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 329 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:48:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221543 states. [2022-12-13 21:49:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221543 to 221541. [2022-12-13 21:49:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221541 states, 221540 states have (on average 1.3442042069152298) internal successors, (297795), 221540 states have internal predecessors, (297795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221541 states to 221541 states and 297795 transitions. [2022-12-13 21:49:13,476 INFO L78 Accepts]: Start accepts. Automaton has 221541 states and 297795 transitions. Word has length 115 [2022-12-13 21:49:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:13,476 INFO L495 AbstractCegarLoop]: Abstraction has 221541 states and 297795 transitions. [2022-12-13 21:49:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 221541 states and 297795 transitions. [2022-12-13 21:49:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 21:49:13,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:13,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 21:49:13,485 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -976801777, now seen corresponding path program 1 times [2022-12-13 21:49:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:13,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970093188] [2022-12-13 21:49:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:13,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:13,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970093188] [2022-12-13 21:49:13,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970093188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:13,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:13,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:13,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631708433] [2022-12-13 21:49:13,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:13,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:13,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:13,520 INFO L87 Difference]: Start difference. First operand 221541 states and 297795 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:33,226 INFO L93 Difference]: Finished difference Result 615736 states and 823516 transitions. [2022-12-13 21:50:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 21:50:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:33,733 INFO L225 Difference]: With dead ends: 615736 [2022-12-13 21:50:33,733 INFO L226 Difference]: Without dead ends: 403860 [2022-12-13 21:50:33,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:33,847 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:33,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 343 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:50:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403860 states. [2022-12-13 21:51:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403860 to 403858. [2022-12-13 21:51:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403858 states, 403857 states have (on average 1.3205292962608053) internal successors, (533305), 403857 states have internal predecessors, (533305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403858 states to 403858 states and 533305 transitions. [2022-12-13 21:51:56,555 INFO L78 Accepts]: Start accepts. Automaton has 403858 states and 533305 transitions. Word has length 115 [2022-12-13 21:51:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:56,555 INFO L495 AbstractCegarLoop]: Abstraction has 403858 states and 533305 transitions. [2022-12-13 21:51:56,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 403858 states and 533305 transitions. [2022-12-13 21:51:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 21:51:56,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:56,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:56,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 21:51:56,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:56,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:56,574 INFO L85 PathProgramCache]: Analyzing trace with hash -98101637, now seen corresponding path program 1 times [2022-12-13 21:51:56,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:56,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553066477] [2022-12-13 21:51:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:56,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553066477] [2022-12-13 21:51:56,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553066477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:51:56,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647896679] [2022-12-13 21:51:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:56,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:51:56,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:51:56,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:51:56,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44a188-b33c-4d35-9873-dca837d19a31/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:51:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:56,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:51:56,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:51:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:57,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:51:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:58,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647896679] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:51:58,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:51:58,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-12-13 21:51:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122505014] [2022-12-13 21:51:58,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:51:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 21:51:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:58,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 21:51:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-12-13 21:51:58,360 INFO L87 Difference]: Start difference. First operand 403858 states and 533305 transitions. Second operand has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 22 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)