./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:52:57,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:52:57,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:52:57,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:52:57,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:52:57,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:52:57,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:52:57,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:52:57,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:52:57,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:52:57,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:52:57,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:52:57,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:52:57,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:52:57,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:52:57,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:52:57,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:52:57,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:52:57,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:52:57,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:52:57,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:52:57,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:52:57,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:52:57,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:52:57,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:52:57,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:52:57,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:52:57,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:52:57,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:52:57,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:52:57,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:52:57,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:52:57,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:52:57,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:52:57,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:52:57,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:52:57,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:52:57,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:52:57,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:52:57,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:52:57,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:52:57,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:52:57,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:52:57,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:52:57,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:52:57,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:52:57,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:52:57,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:52:57,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:52:57,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:52:57,235 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:52:57,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:52:57,236 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:52:57,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:52:57,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:52:57,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:52:57,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:52:57,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:52:57,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:52:57,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:52:57,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:52:57,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:52:57,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:52:57,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:52:57,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:52:57,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:52:57,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:52:57,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:52:57,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:52:57,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:52:57,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:52:57,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:52:57,241 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:52:57,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:52:57,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:52:57,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 [2022-11-02 20:52:57,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:52:57,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:52:57,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:52:57,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:52:57,608 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:52:57,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-11-02 20:52:57,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/data/a763dc5a9/e99b4385ff04410bb84edc6c488d2a07/FLAGc9b2fc17f [2022-11-02 20:52:58,587 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:52:58,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-11-02 20:52:58,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/data/a763dc5a9/e99b4385ff04410bb84edc6c488d2a07/FLAGc9b2fc17f [2022-11-02 20:52:59,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/data/a763dc5a9/e99b4385ff04410bb84edc6c488d2a07 [2022-11-02 20:52:59,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:52:59,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:52:59,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:59,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:52:59,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:52:59,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:59" (1/1) ... [2022-11-02 20:52:59,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b69e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:59, skipping insertion in model container [2022-11-02 20:52:59,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:59" (1/1) ... [2022-11-02 20:52:59,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:52:59,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:52:59,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2022-11-02 20:52:59,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2022-11-02 20:53:00,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:00,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:53:00,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2022-11-02 20:53:00,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2022-11-02 20:53:01,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:01,252 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:53:01,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01 WrapperNode [2022-11-02 20:53:01,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:01,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:01,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:53:01,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:53:01,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:01,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:01,744 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4974 [2022-11-02 20:53:01,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:01,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:53:01,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:53:01,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:53:01,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:01,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:01,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:01,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:02,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:02,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:02,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:02,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:02,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:53:02,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:53:02,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:53:02,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:53:02,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (1/1) ... [2022-11-02 20:53:02,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:02,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:02,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:53:02,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:53:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:53:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:53:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:53:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:53:02,708 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:53:02,710 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:53:07,969 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:53:07,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:53:07,985 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:53:07,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:07 BoogieIcfgContainer [2022-11-02 20:53:07,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:53:07,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:53:07,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:53:08,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:53:08,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:52:59" (1/3) ... [2022-11-02 20:53:08,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278a367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:53:08, skipping insertion in model container [2022-11-02 20:53:08,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:01" (2/3) ... [2022-11-02 20:53:08,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278a367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:53:08, skipping insertion in model container [2022-11-02 20:53:08,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:07" (3/3) ... [2022-11-02 20:53:08,003 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-11-02 20:53:08,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:53:08,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:53:08,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:53:08,143 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;@3fb4e7b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:53:08,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:53:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:53:08,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:08,174 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] [2022-11-02 20:53:08,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2022-11-02 20:53:08,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:08,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881398890] [2022-11-02 20:53:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:08,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:08,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881398890] [2022-11-02 20:53:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881398890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:53:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226187666] [2022-11-02 20:53:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:53:08,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:08,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:53:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:53:08,516 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:08,606 INFO L93 Difference]: Finished difference Result 1732 states and 3290 transitions. [2022-11-02 20:53:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:53:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-02 20:53:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:08,638 INFO L225 Difference]: With dead ends: 1732 [2022-11-02 20:53:08,638 INFO L226 Difference]: Without dead ends: 812 [2022-11-02 20:53:08,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:53:08,647 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:08,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-02 20:53:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-11-02 20:53:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-11-02 20:53:08,733 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-11-02 20:53:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:08,734 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-11-02 20:53:08,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-11-02 20:53:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:53:08,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:08,741 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] [2022-11-02 20:53:08,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:53:08,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-11-02 20:53:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960038995] [2022-11-02 20:53:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:08,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:08,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960038995] [2022-11-02 20:53:08,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960038995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:08,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:08,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:53:08,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728461646] [2022-11-02 20:53:08,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:09,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:53:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:53:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:09,008 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:09,179 INFO L93 Difference]: Finished difference Result 852 states and 1593 transitions. [2022-11-02 20:53:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:53:09,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-02 20:53:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:09,203 INFO L225 Difference]: With dead ends: 852 [2022-11-02 20:53:09,203 INFO L226 Difference]: Without dead ends: 812 [2022-11-02 20:53:09,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:09,205 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 3 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:09,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6105 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-02 20:53:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-11-02 20:53:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-11-02 20:53:09,263 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-11-02 20:53:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:09,263 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-11-02 20:53:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-11-02 20:53:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:53:09,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:09,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:09,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:53:09,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-11-02 20:53:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779850666] [2022-11-02 20:53:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:09,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779850666] [2022-11-02 20:53:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779850666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:09,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:09,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328314720] [2022-11-02 20:53:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:09,411 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:09,453 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-11-02 20:53:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:09,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-02 20:53:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:09,459 INFO L225 Difference]: With dead ends: 878 [2022-11-02 20:53:09,460 INFO L226 Difference]: Without dead ends: 842 [2022-11-02 20:53:09,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:09,470 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 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 [2022-11-02 20:53:09,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-02 20:53:09,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-11-02 20:53:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-11-02 20:53:09,505 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-11-02 20:53:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:09,506 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-11-02 20:53:09,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-11-02 20:53:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:53:09,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:09,511 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] [2022-11-02 20:53:09,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:53:09,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-11-02 20:53:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099839674] [2022-11-02 20:53:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:09,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:09,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:09,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099839674] [2022-11-02 20:53:09,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099839674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:09,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:09,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:53:09,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43682103] [2022-11-02 20:53:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:09,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:53:09,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:53:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:09,690 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:09,863 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2022-11-02 20:53:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:53:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-02 20:53:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:09,869 INFO L225 Difference]: With dead ends: 1224 [2022-11-02 20:53:09,870 INFO L226 Difference]: Without dead ends: 1160 [2022-11-02 20:53:09,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:53:09,879 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:09,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:53:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-02 20:53:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2022-11-02 20:53:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2022-11-02 20:53:09,915 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2022-11-02 20:53:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:09,916 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2022-11-02 20:53:09,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2022-11-02 20:53:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:53:09,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:09,921 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] [2022-11-02 20:53:09,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:53:09,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-11-02 20:53:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:09,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126090300] [2022-11-02 20:53:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:10,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126090300] [2022-11-02 20:53:10,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126090300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:10,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:10,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864590068] [2022-11-02 20:53:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:10,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:10,031 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:10,082 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-11-02 20:53:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:10,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:53:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:10,087 INFO L225 Difference]: With dead ends: 1089 [2022-11-02 20:53:10,087 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 20:53:10,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:10,089 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:10,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 20:53:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-11-02 20:53:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2022-11-02 20:53:10,128 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2022-11-02 20:53:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:10,133 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2022-11-02 20:53:10,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2022-11-02 20:53:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:53:10,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:10,137 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] [2022-11-02 20:53:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:53:10,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-11-02 20:53:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:10,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418543882] [2022-11-02 20:53:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:10,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:10,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418543882] [2022-11-02 20:53:10,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418543882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:10,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:10,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:53:10,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21714432] [2022-11-02 20:53:10,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:10,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:53:10,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:10,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:53:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:10,346 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:10,450 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2022-11-02 20:53:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:53:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:53:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:10,455 INFO L225 Difference]: With dead ends: 1146 [2022-11-02 20:53:10,455 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 20:53:10,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:53:10,457 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 3002 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:10,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3002 Valid, 1636 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 20:53:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-11-02 20:53:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2022-11-02 20:53:10,490 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2022-11-02 20:53:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:10,490 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2022-11-02 20:53:10,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2022-11-02 20:53:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:53:10,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:10,492 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] [2022-11-02 20:53:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:53:10,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-11-02 20:53:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:10,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419781975] [2022-11-02 20:53:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:10,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:10,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419781975] [2022-11-02 20:53:10,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419781975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:10,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:10,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:10,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342374213] [2022-11-02 20:53:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:10,540 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:10,592 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2022-11-02 20:53:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:10,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:53:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:10,598 INFO L225 Difference]: With dead ends: 1291 [2022-11-02 20:53:10,598 INFO L226 Difference]: Without dead ends: 1108 [2022-11-02 20:53:10,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:10,600 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 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 [2022-11-02 20:53:10,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-02 20:53:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2022-11-02 20:53:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2022-11-02 20:53:10,682 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2022-11-02 20:53:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:10,683 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2022-11-02 20:53:10,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2022-11-02 20:53:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:53:10,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:10,684 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] [2022-11-02 20:53:10,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:53:10,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-11-02 20:53:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:10,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981829479] [2022-11-02 20:53:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:10,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:10,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981829479] [2022-11-02 20:53:10,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981829479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:10,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:10,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:10,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910634274] [2022-11-02 20:53:10,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:10,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:10,731 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:10,803 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2022-11-02 20:53:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:10,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:53:10,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:10,810 INFO L225 Difference]: With dead ends: 1690 [2022-11-02 20:53:10,810 INFO L226 Difference]: Without dead ends: 1362 [2022-11-02 20:53:10,811 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 [2022-11-02 20:53:10,812 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 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 [2022-11-02 20:53:10,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-11-02 20:53:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2022-11-02 20:53:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2022-11-02 20:53:10,890 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2022-11-02 20:53:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:10,890 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2022-11-02 20:53:10,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2022-11-02 20:53:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:53:10,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:10,894 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] [2022-11-02 20:53:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:53:10,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:10,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-11-02 20:53:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:10,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103341890] [2022-11-02 20:53:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:11,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:11,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103341890] [2022-11-02 20:53:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103341890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:11,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:11,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:53:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655394618] [2022-11-02 20:53:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:53:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:53:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:53:11,169 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:11,463 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2022-11-02 20:53:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:53:11,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-02 20:53:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:11,470 INFO L225 Difference]: With dead ends: 1883 [2022-11-02 20:53:11,471 INFO L226 Difference]: Without dead ends: 1881 [2022-11-02 20:53:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:53:11,472 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 424 mSDsluCounter, 8903 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:11,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 10434 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-11-02 20:53:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2022-11-02 20:53:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2022-11-02 20:53:11,578 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2022-11-02 20:53:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:11,578 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2022-11-02 20:53:11,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2022-11-02 20:53:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:53:11,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:11,580 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] [2022-11-02 20:53:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:53:11,581 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-11-02 20:53:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:11,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269076497] [2022-11-02 20:53:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:53:11,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:11,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269076497] [2022-11-02 20:53:11,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269076497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:11,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:11,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:53:11,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893366700] [2022-11-02 20:53:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:11,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:53:11,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:11,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:53:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:11,690 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:12,046 INFO L93 Difference]: Finished difference Result 3436 states and 5200 transitions. [2022-11-02 20:53:12,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:53:12,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 64 [2022-11-02 20:53:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:12,057 INFO L225 Difference]: With dead ends: 3436 [2022-11-02 20:53:12,057 INFO L226 Difference]: Without dead ends: 2806 [2022-11-02 20:53:12,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:12,060 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3073 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:12,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 3184 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-11-02 20:53:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2036. [2022-11-02 20:53:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2034 states have (on average 1.5870206489675516) internal successors, (3228), 2035 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3228 transitions. [2022-11-02 20:53:12,258 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3228 transitions. Word has length 64 [2022-11-02 20:53:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:12,259 INFO L495 AbstractCegarLoop]: Abstraction has 2036 states and 3228 transitions. [2022-11-02 20:53:12,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:12,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3228 transitions. [2022-11-02 20:53:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:53:12,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:12,261 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] [2022-11-02 20:53:12,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:53:12,261 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-11-02 20:53:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564619505] [2022-11-02 20:53:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:53:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:12,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564619505] [2022-11-02 20:53:12,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564619505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:12,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:12,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:53:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526184092] [2022-11-02 20:53:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:12,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:53:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:53:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:12,362 INFO L87 Difference]: Start difference. First operand 2036 states and 3228 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:12,766 INFO L93 Difference]: Finished difference Result 4064 states and 6076 transitions. [2022-11-02 20:53:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:53:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 64 [2022-11-02 20:53:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:12,779 INFO L225 Difference]: With dead ends: 4064 [2022-11-02 20:53:12,779 INFO L226 Difference]: Without dead ends: 3434 [2022-11-02 20:53:12,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:12,782 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3067 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 3203 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-02 20:53:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2980. [2022-11-02 20:53:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.5218267293485561) internal successors, (4532), 2979 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4532 transitions. [2022-11-02 20:53:13,231 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4532 transitions. Word has length 64 [2022-11-02 20:53:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:13,231 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4532 transitions. [2022-11-02 20:53:13,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4532 transitions. [2022-11-02 20:53:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:53:13,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:13,234 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] [2022-11-02 20:53:13,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:53:13,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-11-02 20:53:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610388518] [2022-11-02 20:53:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:53:13,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:13,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610388518] [2022-11-02 20:53:13,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610388518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:13,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:13,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:53:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248048147] [2022-11-02 20:53:13,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:13,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:53:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:53:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:13,356 INFO L87 Difference]: Start difference. First operand 2980 states and 4532 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:13,941 INFO L93 Difference]: Finished difference Result 4332 states and 6456 transitions. [2022-11-02 20:53:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:53:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 64 [2022-11-02 20:53:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:13,957 INFO L225 Difference]: With dead ends: 4332 [2022-11-02 20:53:13,957 INFO L226 Difference]: Without dead ends: 3882 [2022-11-02 20:53:13,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:13,961 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:13,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-11-02 20:53:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3428. [2022-11-02 20:53:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.5072971395213077) internal successors, (5164), 3427 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5164 transitions. [2022-11-02 20:53:14,348 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5164 transitions. Word has length 64 [2022-11-02 20:53:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:14,348 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5164 transitions. [2022-11-02 20:53:14,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5164 transitions. [2022-11-02 20:53:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:53:14,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:14,350 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] [2022-11-02 20:53:14,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:53:14,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-11-02 20:53:14,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:14,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784721897] [2022-11-02 20:53:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:14,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:14,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:14,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784721897] [2022-11-02 20:53:14,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784721897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:14,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:14,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778446605] [2022-11-02 20:53:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:14,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:14,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:14,505 INFO L87 Difference]: Start difference. First operand 3428 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:14,829 INFO L93 Difference]: Finished difference Result 6080 states and 8866 transitions. [2022-11-02 20:53:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-02 20:53:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:14,857 INFO L225 Difference]: With dead ends: 6080 [2022-11-02 20:53:14,864 INFO L226 Difference]: Without dead ends: 3430 [2022-11-02 20:53:14,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:14,869 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 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 [2022-11-02 20:53:14,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:14,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-11-02 20:53:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3428. [2022-11-02 20:53:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.4927028604786923) internal successors, (5114), 3427 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5114 transitions. [2022-11-02 20:53:15,259 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5114 transitions. Word has length 65 [2022-11-02 20:53:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:15,259 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5114 transitions. [2022-11-02 20:53:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5114 transitions. [2022-11-02 20:53:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:53:15,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:15,268 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] [2022-11-02 20:53:15,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:53:15,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-11-02 20:53:15,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:15,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069978801] [2022-11-02 20:53:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:15,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069978801] [2022-11-02 20:53:15,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069978801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:15,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:15,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231265877] [2022-11-02 20:53:15,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:15,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:15,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:15,372 INFO L87 Difference]: Start difference. First operand 3428 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:15,560 INFO L93 Difference]: Finished difference Result 4756 states and 6941 transitions. [2022-11-02 20:53:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-02 20:53:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:15,566 INFO L225 Difference]: With dead ends: 4756 [2022-11-02 20:53:15,566 INFO L226 Difference]: Without dead ends: 2106 [2022-11-02 20:53:15,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:15,571 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 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 [2022-11-02 20:53:15,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:53:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-11-02 20:53:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2022-11-02 20:53:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.5528068506184587) internal successors, (3264), 2103 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3264 transitions. [2022-11-02 20:53:15,810 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3264 transitions. Word has length 65 [2022-11-02 20:53:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:15,810 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3264 transitions. [2022-11-02 20:53:15,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3264 transitions. [2022-11-02 20:53:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:53:15,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:15,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:15,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:53:15,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-11-02 20:53:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:15,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206486125] [2022-11-02 20:53:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:15,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:16,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206486125] [2022-11-02 20:53:16,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206486125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:53:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568906552] [2022-11-02 20:53:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:16,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:53:16,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:16,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:53:16,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:53:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:16,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:53:16,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:53:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:53:16,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:53:17,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568906552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:17,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:53:17,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-11-02 20:53:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055194306] [2022-11-02 20:53:17,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:53:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:53:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:53:17,083 INFO L87 Difference]: Start difference. First operand 2104 states and 3264 transitions. Second operand has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:23,823 INFO L93 Difference]: Finished difference Result 13969 states and 19009 transitions. [2022-11-02 20:53:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-02 20:53:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 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 65 [2022-11-02 20:53:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:23,854 INFO L225 Difference]: With dead ends: 13969 [2022-11-02 20:53:23,854 INFO L226 Difference]: Without dead ends: 12643 [2022-11-02 20:53:23,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1620, Invalid=8082, Unknown=0, NotChecked=0, Total=9702 [2022-11-02 20:53:23,863 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 16470 mSDsluCounter, 5175 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16470 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:23,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16470 Valid, 6732 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:53:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12643 states. [2022-11-02 20:53:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12643 to 8585. [2022-11-02 20:53:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8585 states, 8583 states have (on average 1.365373412559711) internal successors, (11719), 8584 states have internal predecessors, (11719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8585 states to 8585 states and 11719 transitions. [2022-11-02 20:53:24,809 INFO L78 Accepts]: Start accepts. Automaton has 8585 states and 11719 transitions. Word has length 65 [2022-11-02 20:53:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:24,809 INFO L495 AbstractCegarLoop]: Abstraction has 8585 states and 11719 transitions. [2022-11-02 20:53:24,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8585 states and 11719 transitions. [2022-11-02 20:53:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:53:24,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:24,811 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:53:24,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:53:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:53:25,037 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 752221610, now seen corresponding path program 1 times [2022-11-02 20:53:25,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:25,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769457843] [2022-11-02 20:53:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:25,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:25,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769457843] [2022-11-02 20:53:25,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769457843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:53:25,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854863544] [2022-11-02 20:53:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:25,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:53:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:25,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:53:25,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:53:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:25,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:53:25,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:53:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:26,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:26,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854863544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:26,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:53:26,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-02 20:53:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933083732] [2022-11-02 20:53:26,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:53:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:53:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:53:27,046 INFO L87 Difference]: Start difference. First operand 8585 states and 11719 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:51,677 INFO L93 Difference]: Finished difference Result 122089 states and 157892 transitions. [2022-11-02 20:53:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-11-02 20:53:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 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 66 [2022-11-02 20:53:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:52,007 INFO L225 Difference]: With dead ends: 122089 [2022-11-02 20:53:52,008 INFO L226 Difference]: Without dead ends: 114282 [2022-11-02 20:53:52,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7739 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3290, Invalid=19060, Unknown=0, NotChecked=0, Total=22350 [2022-11-02 20:53:52,048 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 21495 mSDsluCounter, 9039 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21495 SdHoareTripleChecker+Valid, 10662 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:52,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21495 Valid, 10662 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:53:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114282 states. [2022-11-02 20:53:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114282 to 39515. [2022-11-02 20:53:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39515 states, 39513 states have (on average 1.2994204439045378) internal successors, (51344), 39514 states have internal predecessors, (51344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39515 states to 39515 states and 51344 transitions. [2022-11-02 20:53:59,266 INFO L78 Accepts]: Start accepts. Automaton has 39515 states and 51344 transitions. Word has length 66 [2022-11-02 20:53:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:59,267 INFO L495 AbstractCegarLoop]: Abstraction has 39515 states and 51344 transitions. [2022-11-02 20:53:59,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 39515 states and 51344 transitions. [2022-11-02 20:53:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:53:59,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:59,270 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] [2022-11-02 20:53:59,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:53:59,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:53:59,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash -434236462, now seen corresponding path program 1 times [2022-11-02 20:53:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:59,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628796112] [2022-11-02 20:53:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:59,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:59,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628796112] [2022-11-02 20:53:59,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628796112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:59,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:59,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:53:59,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141618666] [2022-11-02 20:53:59,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:59,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:59,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:59,577 INFO L87 Difference]: Start difference. First operand 39515 states and 51344 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:02,417 INFO L93 Difference]: Finished difference Result 57754 states and 74645 transitions. [2022-11-02 20:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:02,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-02 20:54:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:02,457 INFO L225 Difference]: With dead ends: 57754 [2022-11-02 20:54:02,457 INFO L226 Difference]: Without dead ends: 19017 [2022-11-02 20:54:02,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:02,489 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 17 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3021 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 [2022-11-02 20:54:02,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19017 states. [2022-11-02 20:54:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19017 to 17638. [2022-11-02 20:54:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17638 states, 17636 states have (on average 1.281980040825584) internal successors, (22609), 17637 states have internal predecessors, (22609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17638 states to 17638 states and 22609 transitions. [2022-11-02 20:54:05,183 INFO L78 Accepts]: Start accepts. Automaton has 17638 states and 22609 transitions. Word has length 66 [2022-11-02 20:54:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:05,184 INFO L495 AbstractCegarLoop]: Abstraction has 17638 states and 22609 transitions. [2022-11-02 20:54:05,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 17638 states and 22609 transitions. [2022-11-02 20:54:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:54:05,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:05,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:54:05,186 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1433407838, now seen corresponding path program 1 times [2022-11-02 20:54:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:05,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014254138] [2022-11-02 20:54:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:54:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014254138] [2022-11-02 20:54:05,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014254138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:05,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:05,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:05,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240999153] [2022-11-02 20:54:05,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:05,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:54:05,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:54:05,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:54:05,278 INFO L87 Difference]: Start difference. First operand 17638 states and 22609 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:08,283 INFO L93 Difference]: Finished difference Result 31781 states and 40480 transitions. [2022-11-02 20:54:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:54:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 66 [2022-11-02 20:54:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:08,306 INFO L225 Difference]: With dead ends: 31781 [2022-11-02 20:54:08,306 INFO L226 Difference]: Without dead ends: 14998 [2022-11-02 20:54:08,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:08,318 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4498 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:08,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 2965 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14998 states. [2022-11-02 20:54:10,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14998 to 14998. [2022-11-02 20:54:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14998 states, 14996 states have (on average 1.2658042144571886) internal successors, (18982), 14997 states have internal predecessors, (18982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14998 states to 14998 states and 18982 transitions. [2022-11-02 20:54:10,661 INFO L78 Accepts]: Start accepts. Automaton has 14998 states and 18982 transitions. Word has length 66 [2022-11-02 20:54:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:10,661 INFO L495 AbstractCegarLoop]: Abstraction has 14998 states and 18982 transitions. [2022-11-02 20:54:10,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14998 states and 18982 transitions. [2022-11-02 20:54:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:54:10,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:10,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:10,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:54:10,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:10,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1275703454, now seen corresponding path program 1 times [2022-11-02 20:54:10,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:10,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563159119] [2022-11-02 20:54:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:10,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:54:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:10,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563159119] [2022-11-02 20:54:10,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563159119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:10,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:10,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859156122] [2022-11-02 20:54:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:54:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:54:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:54:10,759 INFO L87 Difference]: Start difference. First operand 14998 states and 18982 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:13,352 INFO L93 Difference]: Finished difference Result 25541 states and 32009 transitions. [2022-11-02 20:54:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:54:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 66 [2022-11-02 20:54:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:13,364 INFO L225 Difference]: With dead ends: 25541 [2022-11-02 20:54:13,364 INFO L226 Difference]: Without dead ends: 11434 [2022-11-02 20:54:13,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:13,371 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4546 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4546 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:13,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4546 Valid, 2952 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2022-11-02 20:54:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 11434. [2022-11-02 20:54:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11434 states, 11432 states have (on average 1.2539363191042687) internal successors, (14335), 11433 states have internal predecessors, (14335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11434 states to 11434 states and 14335 transitions. [2022-11-02 20:54:14,967 INFO L78 Accepts]: Start accepts. Automaton has 11434 states and 14335 transitions. Word has length 66 [2022-11-02 20:54:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:14,968 INFO L495 AbstractCegarLoop]: Abstraction has 11434 states and 14335 transitions. [2022-11-02 20:54:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 11434 states and 14335 transitions. [2022-11-02 20:54:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:54:14,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:14,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:54:14,971 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-11-02 20:54:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:14,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676287770] [2022-11-02 20:54:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:54:15,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676287770] [2022-11-02 20:54:15,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676287770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:15,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:15,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:15,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144022831] [2022-11-02 20:54:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:15,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:54:15,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:54:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:54:15,070 INFO L87 Difference]: Start difference. First operand 11434 states and 14335 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:16,433 INFO L93 Difference]: Finished difference Result 19736 states and 24452 transitions. [2022-11-02 20:54:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:54:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 66 [2022-11-02 20:54:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:16,444 INFO L225 Difference]: With dead ends: 19736 [2022-11-02 20:54:16,444 INFO L226 Difference]: Without dead ends: 9116 [2022-11-02 20:54:16,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:16,451 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4510 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:16,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 2953 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9116 states. [2022-11-02 20:54:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9116 to 9116. [2022-11-02 20:54:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9116 states, 9114 states have (on average 1.2545534342769367) internal successors, (11434), 9115 states have internal predecessors, (11434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9116 states to 9116 states and 11434 transitions. [2022-11-02 20:54:18,011 INFO L78 Accepts]: Start accepts. Automaton has 9116 states and 11434 transitions. Word has length 66 [2022-11-02 20:54:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:18,011 INFO L495 AbstractCegarLoop]: Abstraction has 9116 states and 11434 transitions. [2022-11-02 20:54:18,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 9116 states and 11434 transitions. [2022-11-02 20:54:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:54:18,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:18,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:18,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:54:18,014 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:18,015 INFO L85 PathProgramCache]: Analyzing trace with hash -791645332, now seen corresponding path program 1 times [2022-11-02 20:54:18,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885749665] [2022-11-02 20:54:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:18,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:18,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885749665] [2022-11-02 20:54:18,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885749665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:54:18,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294052319] [2022-11-02 20:54:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:18,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:54:18,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:18,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:54:18,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:54:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:18,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:54:18,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:20,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:21,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294052319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:21,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:54:21,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2022-11-02 20:54:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33021231] [2022-11-02 20:54:21,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:54:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:54:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:54:21,898 INFO L87 Difference]: Start difference. First operand 9116 states and 11434 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:36,405 INFO L93 Difference]: Finished difference Result 18544 states and 22563 transitions. [2022-11-02 20:54:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-02 20:54:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 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 67 [2022-11-02 20:54:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:36,418 INFO L225 Difference]: With dead ends: 18544 [2022-11-02 20:54:36,418 INFO L226 Difference]: Without dead ends: 13200 [2022-11-02 20:54:36,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3273 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1888, Invalid=9884, Unknown=0, NotChecked=0, Total=11772 [2022-11-02 20:54:36,429 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 8573 mSDsluCounter, 27446 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8573 SdHoareTripleChecker+Valid, 29174 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:36,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8573 Valid, 29174 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:54:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13200 states. [2022-11-02 20:54:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13200 to 6190. [2022-11-02 20:54:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6190 states, 6188 states have (on average 1.278765352294764) internal successors, (7913), 6189 states have internal predecessors, (7913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6190 states to 6190 states and 7913 transitions. [2022-11-02 20:54:37,625 INFO L78 Accepts]: Start accepts. Automaton has 6190 states and 7913 transitions. Word has length 67 [2022-11-02 20:54:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 6190 states and 7913 transitions. [2022-11-02 20:54:37,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states and 7913 transitions. [2022-11-02 20:54:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:54:37,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:37,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:37,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:37,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:54:37,827 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash 531431905, now seen corresponding path program 1 times [2022-11-02 20:54:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:37,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219047388] [2022-11-02 20:54:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219047388] [2022-11-02 20:54:37,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219047388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:37,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:37,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446372378] [2022-11-02 20:54:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:37,997 INFO L87 Difference]: Start difference. First operand 6190 states and 7913 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:47,204 INFO L93 Difference]: Finished difference Result 8445 states and 12222 transitions. [2022-11-02 20:54:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:54:47,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-02 20:54:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:47,214 INFO L225 Difference]: With dead ends: 8445 [2022-11-02 20:54:47,214 INFO L226 Difference]: Without dead ends: 7692 [2022-11-02 20:54:47,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:47,216 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2330 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:47,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 786 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-02 20:54:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7692 states. [2022-11-02 20:54:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7692 to 7692. [2022-11-02 20:54:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7690 states have (on average 1.2859557867360207) internal successors, (9889), 7691 states have internal predecessors, (9889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 9889 transitions. [2022-11-02 20:54:48,428 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 9889 transitions. Word has length 67 [2022-11-02 20:54:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:48,429 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 9889 transitions. [2022-11-02 20:54:48,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 9889 transitions. [2022-11-02 20:54:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:54:48,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:48,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:54:48,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:54:48,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2141886399, now seen corresponding path program 1 times [2022-11-02 20:54:48,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:48,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802576004] [2022-11-02 20:54:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:48,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:49,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:49,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802576004] [2022-11-02 20:54:49,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802576004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:54:49,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642478886] [2022-11-02 20:54:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:49,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:54:49,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:49,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:54:49,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d1b83a8-b556-4ba8-a178-af0533871c48/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:54:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:49,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:54:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:52,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:55,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642478886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:55,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:54:55,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 19] total 52 [2022-11-02 20:54:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272421414] [2022-11-02 20:54:55,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:54:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:54:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2355, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:54:55,359 INFO L87 Difference]: Start difference. First operand 7692 states and 9889 transitions. Second operand has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)