./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:32:37,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:32:37,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:32:37,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:32:37,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:32:37,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:32:37,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:32:37,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:32:37,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:32:37,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:32:37,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:32:37,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:32:37,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:32:37,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:32:37,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:32:37,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:32:37,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:32:37,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:32:37,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:32:37,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:32:37,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:32:37,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:32:37,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:32:37,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:32:37,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:32:37,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:32:37,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:32:37,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:32:37,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:32:37,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:32:37,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:32:37,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:32:37,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:32:37,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:32:37,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:32:37,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:32:37,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:32:37,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:32:37,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:32:37,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:32:37,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:32:37,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:32:37,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:32:37,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:32:37,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:32:37,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:32:37,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:32:37,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:32:37,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:32:37,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:32:37,229 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:32:37,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:32:37,230 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:32:37,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:32:37,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:32:37,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:32:37,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:32:37,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:32:37,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:32:37,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:32:37,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:32:37,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:32:37,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:32:37,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:32:37,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:32:37,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:32:37,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:37,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:32:37,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:32:37,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:32:37,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:32:37,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:32:37,237 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:32:37,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:32:37,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:32:37,238 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_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e [2022-11-18 19:32:37,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:32:37,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:32:37,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:32:37,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:32:37,518 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:32:37,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-11-18 19:32:37,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/data/00db108fa/9692ee64f2434185b5d81847e7db8944/FLAG626f99bd4 [2022-11-18 19:32:38,110 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:32:38,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-11-18 19:32:38,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/data/00db108fa/9692ee64f2434185b5d81847e7db8944/FLAG626f99bd4 [2022-11-18 19:32:38,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/data/00db108fa/9692ee64f2434185b5d81847e7db8944 [2022-11-18 19:32:38,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:32:38,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:32:38,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:38,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:32:38,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:32:38,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e41634d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38, skipping insertion in model container [2022-11-18 19:32:38,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:32:38,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:38,875 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[914,927] [2022-11-18 19:32:38,928 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2022-11-18 19:32:38,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:39,004 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:39,016 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[914,927] [2022-11-18 19:32:39,036 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2022-11-18 19:32:39,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:39,118 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:39,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39 WrapperNode [2022-11-18 19:32:39,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:39,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:39,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:39,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:39,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,183 INFO L138 Inliner]: procedures = 65, calls = 75, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 692 [2022-11-18 19:32:39,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:39,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:39,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:39,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:39,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:39,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:39,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:39,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:39,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (1/1) ... [2022-11-18 19:32:39,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:39,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:39,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:39,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:39,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:39,363 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 19:32:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 19:32:39,363 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-18 19:32:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-18 19:32:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-18 19:32:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-18 19:32:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-18 19:32:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-18 19:32:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-18 19:32:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-18 19:32:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-18 19:32:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-18 19:32:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-18 19:32:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-18 19:32:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-18 19:32:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-18 19:32:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-18 19:32:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-18 19:32:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-18 19:32:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-18 19:32:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-18 19:32:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-18 19:32:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-18 19:32:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-18 19:32:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-18 19:32:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-18 19:32:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-18 19:32:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-18 19:32:39,516 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:39,518 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:40,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:40,356 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:40,357 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-18 19:32:40,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:40 BoogieIcfgContainer [2022-11-18 19:32:40,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:40,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:40,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:40,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:40,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:38" (1/3) ... [2022-11-18 19:32:40,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa201b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:40, skipping insertion in model container [2022-11-18 19:32:40,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:39" (2/3) ... [2022-11-18 19:32:40,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa201b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:40, skipping insertion in model container [2022-11-18 19:32:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:40" (3/3) ... [2022-11-18 19:32:40,368 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-11-18 19:32:40,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:40,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 19:32:40,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:40,509 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;@6c6fe841, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:40,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 19:32:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-18 19:32:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:40,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:40,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:40,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 751120114, now seen corresponding path program 1 times [2022-11-18 19:32:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462275382] [2022-11-18 19:32:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:41,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462275382] [2022-11-18 19:32:41,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462275382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:41,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:41,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:32:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691987282] [2022-11-18 19:32:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:41,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:32:41,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:32:41,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:32:41,197 INFO L87 Difference]: Start difference. First operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:42,617 INFO L93 Difference]: Finished difference Result 779 states and 1212 transitions. [2022-11-18 19:32:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:32:42,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:32:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:42,634 INFO L225 Difference]: With dead ends: 779 [2022-11-18 19:32:42,634 INFO L226 Difference]: Without dead ends: 458 [2022-11-18 19:32:42,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:32:42,643 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 859 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:42,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1431 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:32:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-18 19:32:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 419. [2022-11-18 19:32:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 350 states have (on average 1.4857142857142858) internal successors, (520), 356 states have internal predecessors, (520), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2022-11-18 19:32:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 613 transitions. [2022-11-18 19:32:42,755 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 613 transitions. Word has length 65 [2022-11-18 19:32:42,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:42,756 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 613 transitions. [2022-11-18 19:32:42,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 613 transitions. [2022-11-18 19:32:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:42,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:42,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:42,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1864958542, now seen corresponding path program 1 times [2022-11-18 19:32:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:42,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094044415] [2022-11-18 19:32:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:42,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:42,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094044415] [2022-11-18 19:32:42,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094044415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:42,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:42,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:32:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219569589] [2022-11-18 19:32:42,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:42,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:32:42,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:42,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:32:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:32:42,993 INFO L87 Difference]: Start difference. First operand 419 states and 613 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:44,264 INFO L93 Difference]: Finished difference Result 766 states and 1090 transitions. [2022-11-18 19:32:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:32:44,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:32:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:44,279 INFO L225 Difference]: With dead ends: 766 [2022-11-18 19:32:44,280 INFO L226 Difference]: Without dead ends: 589 [2022-11-18 19:32:44,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:32:44,288 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1194 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:44,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1411 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:32:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-18 19:32:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 515. [2022-11-18 19:32:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 426 states have (on average 1.4647887323943662) internal successors, (624), 434 states have internal predecessors, (624), 56 states have call successors, (56), 28 states have call predecessors, (56), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-11-18 19:32:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 747 transitions. [2022-11-18 19:32:44,381 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 747 transitions. Word has length 65 [2022-11-18 19:32:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:44,381 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 747 transitions. [2022-11-18 19:32:44,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 747 transitions. [2022-11-18 19:32:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:44,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:44,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:44,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:44,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:44,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash 401422644, now seen corresponding path program 1 times [2022-11-18 19:32:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:44,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635677857] [2022-11-18 19:32:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:44,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:44,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635677857] [2022-11-18 19:32:44,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635677857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:44,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:44,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:32:44,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092679555] [2022-11-18 19:32:44,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:44,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:32:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:32:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:32:44,585 INFO L87 Difference]: Start difference. First operand 515 states and 747 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 19:32:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:46,830 INFO L93 Difference]: Finished difference Result 1847 states and 2593 transitions. [2022-11-18 19:32:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:32:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-18 19:32:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:46,844 INFO L225 Difference]: With dead ends: 1847 [2022-11-18 19:32:46,844 INFO L226 Difference]: Without dead ends: 1562 [2022-11-18 19:32:46,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:32:46,858 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2910 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:46,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2924 Valid, 1650 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:32:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-11-18 19:32:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1401. [2022-11-18 19:32:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1129 states have (on average 1.3808680248007086) internal successors, (1559), 1152 states have internal predecessors, (1559), 144 states have call successors, (144), 111 states have call predecessors, (144), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2022-11-18 19:32:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1881 transitions. [2022-11-18 19:32:47,014 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1881 transitions. Word has length 65 [2022-11-18 19:32:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:47,014 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1881 transitions. [2022-11-18 19:32:47,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 19:32:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1881 transitions. [2022-11-18 19:32:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:47,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:47,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:32:47,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1452871733, now seen corresponding path program 1 times [2022-11-18 19:32:47,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:47,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425087113] [2022-11-18 19:32:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:47,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:47,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425087113] [2022-11-18 19:32:47,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425087113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:47,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:47,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:32:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050984707] [2022-11-18 19:32:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:47,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:32:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:32:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:32:47,238 INFO L87 Difference]: Start difference. First operand 1401 states and 1881 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:32:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:48,512 INFO L93 Difference]: Finished difference Result 2730 states and 3631 transitions. [2022-11-18 19:32:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:32:48,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 19:32:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:48,521 INFO L225 Difference]: With dead ends: 2730 [2022-11-18 19:32:48,521 INFO L226 Difference]: Without dead ends: 1565 [2022-11-18 19:32:48,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:32:48,525 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 411 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:48,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1896 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:32:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-18 19:32:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1431. [2022-11-18 19:32:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1153 states have (on average 1.3660017346053772) internal successors, (1575), 1176 states have internal predecessors, (1575), 144 states have call successors, (144), 111 states have call predecessors, (144), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2022-11-18 19:32:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1903 transitions. [2022-11-18 19:32:48,666 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1903 transitions. Word has length 65 [2022-11-18 19:32:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:48,666 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1903 transitions. [2022-11-18 19:32:48,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:32:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1903 transitions. [2022-11-18 19:32:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:48,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:48,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:48,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:32:48,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1455892169, now seen corresponding path program 1 times [2022-11-18 19:32:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:48,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784172125] [2022-11-18 19:32:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784172125] [2022-11-18 19:32:48,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784172125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:48,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:48,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:32:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921155513] [2022-11-18 19:32:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:32:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:32:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:32:48,861 INFO L87 Difference]: Start difference. First operand 1431 states and 1903 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:50,127 INFO L93 Difference]: Finished difference Result 2780 states and 3605 transitions. [2022-11-18 19:32:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:32:50,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:32:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:50,136 INFO L225 Difference]: With dead ends: 2780 [2022-11-18 19:32:50,136 INFO L226 Difference]: Without dead ends: 1808 [2022-11-18 19:32:50,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:32:50,140 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1202 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:50,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1192 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:32:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-18 19:32:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1373. [2022-11-18 19:32:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1111 states have (on average 1.3636363636363635) internal successors, (1515), 1129 states have internal predecessors, (1515), 138 states have call successors, (138), 106 states have call predecessors, (138), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2022-11-18 19:32:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1822 transitions. [2022-11-18 19:32:50,247 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1822 transitions. Word has length 65 [2022-11-18 19:32:50,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:50,247 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1822 transitions. [2022-11-18 19:32:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1822 transitions. [2022-11-18 19:32:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:50,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:50,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:50,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:32:50,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1589905675, now seen corresponding path program 1 times [2022-11-18 19:32:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:50,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508450170] [2022-11-18 19:32:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:50,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:50,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508450170] [2022-11-18 19:32:50,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508450170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:50,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:50,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757445873] [2022-11-18 19:32:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:50,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:50,372 INFO L87 Difference]: Start difference. First operand 1373 states and 1822 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:51,232 INFO L93 Difference]: Finished difference Result 3727 states and 4840 transitions. [2022-11-18 19:32:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:32:51,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:32:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:51,246 INFO L225 Difference]: With dead ends: 3727 [2022-11-18 19:32:51,247 INFO L226 Difference]: Without dead ends: 2591 [2022-11-18 19:32:51,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:32:51,255 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1165 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:51,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 959 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:32:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2022-11-18 19:32:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2471. [2022-11-18 19:32:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 1950 states have (on average 1.303076923076923) internal successors, (2541), 1992 states have internal predecessors, (2541), 268 states have call successors, (268), 205 states have call predecessors, (268), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2022-11-18 19:32:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3190 transitions. [2022-11-18 19:32:51,455 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3190 transitions. Word has length 65 [2022-11-18 19:32:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:51,456 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3190 transitions. [2022-11-18 19:32:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:32:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3190 transitions. [2022-11-18 19:32:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:32:51,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:51,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:51,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:32:51,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1359463327, now seen corresponding path program 1 times [2022-11-18 19:32:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:51,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507519729] [2022-11-18 19:32:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:51,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507519729] [2022-11-18 19:32:51,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507519729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:51,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:51,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148316629] [2022-11-18 19:32:51,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:51,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:51,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:51,556 INFO L87 Difference]: Start difference. First operand 2471 states and 3190 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:32:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:52,510 INFO L93 Difference]: Finished difference Result 5865 states and 7498 transitions. [2022-11-18 19:32:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:32:52,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 19:32:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:52,529 INFO L225 Difference]: With dead ends: 5865 [2022-11-18 19:32:52,529 INFO L226 Difference]: Without dead ends: 3636 [2022-11-18 19:32:52,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:32:52,539 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 584 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:52,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1140 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:32:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2022-11-18 19:32:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3305. [2022-11-18 19:32:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 2595 states have (on average 1.2882466281310212) internal successors, (3343), 2644 states have internal predecessors, (3343), 364 states have call successors, (364), 285 states have call predecessors, (364), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2022-11-18 19:32:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4207 transitions. [2022-11-18 19:32:52,821 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4207 transitions. Word has length 66 [2022-11-18 19:32:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:52,822 INFO L495 AbstractCegarLoop]: Abstraction has 3305 states and 4207 transitions. [2022-11-18 19:32:52,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:32:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4207 transitions. [2022-11-18 19:32:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 19:32:52,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:52,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:32:52,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1540190304, now seen corresponding path program 1 times [2022-11-18 19:32:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:52,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482602277] [2022-11-18 19:32:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:52,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482602277] [2022-11-18 19:32:52,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482602277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:52,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524289381] [2022-11-18 19:32:52,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:52,949 INFO L87 Difference]: Start difference. First operand 3305 states and 4207 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:32:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:53,852 INFO L93 Difference]: Finished difference Result 7291 states and 9206 transitions. [2022-11-18 19:32:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:32:53,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-18 19:32:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:53,870 INFO L225 Difference]: With dead ends: 7291 [2022-11-18 19:32:53,870 INFO L226 Difference]: Without dead ends: 4226 [2022-11-18 19:32:53,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:32:53,879 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1124 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:53,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 786 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:32:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2022-11-18 19:32:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3880. [2022-11-18 19:32:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3050 states have (on average 1.280983606557377) internal successors, (3907), 3103 states have internal predecessors, (3907), 423 states have call successors, (423), 335 states have call predecessors, (423), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2022-11-18 19:32:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4912 transitions. [2022-11-18 19:32:54,247 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4912 transitions. Word has length 72 [2022-11-18 19:32:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:54,248 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 4912 transitions. [2022-11-18 19:32:54,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:32:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4912 transitions. [2022-11-18 19:32:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:32:54,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:54,251 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:54,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:32:54,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748717, now seen corresponding path program 1 times [2022-11-18 19:32:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:54,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048918996] [2022-11-18 19:32:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:54,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048918996] [2022-11-18 19:32:54,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048918996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:54,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:54,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:54,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342107417] [2022-11-18 19:32:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:54,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:54,385 INFO L87 Difference]: Start difference. First operand 3880 states and 4912 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:32:55,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:55,466 INFO L93 Difference]: Finished difference Result 5062 states and 6368 transitions. [2022-11-18 19:32:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:32:55,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-18 19:32:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:55,487 INFO L225 Difference]: With dead ends: 5062 [2022-11-18 19:32:55,487 INFO L226 Difference]: Without dead ends: 5059 [2022-11-18 19:32:55,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:32:55,492 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1359 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:55,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 981 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:32:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2022-11-18 19:32:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 4347. [2022-11-18 19:32:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3407 states have (on average 1.2717933665981802) internal successors, (4333), 3464 states have internal predecessors, (4333), 476 states have call successors, (476), 379 states have call predecessors, (476), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2022-11-18 19:32:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5473 transitions. [2022-11-18 19:32:55,939 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5473 transitions. Word has length 73 [2022-11-18 19:32:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:55,940 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5473 transitions. [2022-11-18 19:32:55,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:32:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5473 transitions. [2022-11-18 19:32:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:32:55,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:55,942 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:55,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:32:55,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1486432694, now seen corresponding path program 1 times [2022-11-18 19:32:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036705220] [2022-11-18 19:32:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:32:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:32:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:32:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:32:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:32:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:56,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:56,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036705220] [2022-11-18 19:32:56,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036705220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:56,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740659307] [2022-11-18 19:32:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:56,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:56,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:56,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:56,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:32:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:56,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:32:56,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:56,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:56,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740659307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:56,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:56,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-18 19:32:56,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4385894] [2022-11-18 19:32:56,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:32:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:32:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:32:56,863 INFO L87 Difference]: Start difference. First operand 4347 states and 5473 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 19:32:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:59,825 INFO L93 Difference]: Finished difference Result 8888 states and 11081 transitions. [2022-11-18 19:32:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:32:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-18 19:32:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:59,873 INFO L225 Difference]: With dead ends: 8888 [2022-11-18 19:32:59,873 INFO L226 Difference]: Without dead ends: 8885 [2022-11-18 19:32:59,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:32:59,879 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1585 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:59,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 1833 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:32:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8885 states. [2022-11-18 19:33:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8885 to 7816. [2022-11-18 19:33:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 6109 states have (on average 1.2594532656735964) internal successors, (7694), 6210 states have internal predecessors, (7694), 855 states have call successors, (855), 693 states have call predecessors, (855), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2022-11-18 19:33:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 9750 transitions. [2022-11-18 19:33:00,656 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 9750 transitions. Word has length 74 [2022-11-18 19:33:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:00,657 INFO L495 AbstractCegarLoop]: Abstraction has 7816 states and 9750 transitions. [2022-11-18 19:33:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 19:33:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 9750 transitions. [2022-11-18 19:33:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:33:00,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:00,660 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:00,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:00,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdfb39f-1647-457f-a6b1-3329340516c2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:00,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:00,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1906520915, now seen corresponding path program 2 times [2022-11-18 19:33:00,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:00,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717707540] [2022-11-18 19:33:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:00,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:33:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:33:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:33:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:33:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:33:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:00,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:00,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717707540] [2022-11-18 19:33:00,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717707540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:00,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:00,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:33:00,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786916425] [2022-11-18 19:33:00,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:00,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:00,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:00,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:00,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:00,964 INFO L87 Difference]: Start difference. First operand 7816 states and 9750 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:33:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:01,978 INFO L93 Difference]: Finished difference Result 10526 states and 13162 transitions. [2022-11-18 19:33:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:33:01,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-18 19:33:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:02,003 INFO L225 Difference]: With dead ends: 10526 [2022-11-18 19:33:02,004 INFO L226 Difference]: Without dead ends: 4309 [2022-11-18 19:33:02,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:33:02,018 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1024 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:02,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 820 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:33:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2022-11-18 19:33:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3192. [2022-11-18 19:33:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2517 states have (on average 1.2590385379419944) internal successors, (3169), 2552 states have internal predecessors, (3169), 348 states have call successors, (348), 275 states have call predecessors, (348), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2022-11-18 19:33:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 3977 transitions. [2022-11-18 19:33:02,488 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 3977 transitions. Word has length 77 [2022-11-18 19:33:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:02,488 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 3977 transitions. [2022-11-18 19:33:02,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:33:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 3977 transitions. [2022-11-18 19:33:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:33:02,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:02,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:02,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:33:02,491 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:02,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1402994660, now seen corresponding path program 1 times [2022-11-18 19:33:02,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:02,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126005197] [2022-11-18 19:33:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:33:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:33:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:33:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:33:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:33:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:33:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:02,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126005197] [2022-11-18 19:33:02,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126005197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:02,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:02,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:33:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028451742] [2022-11-18 19:33:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:02,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:33:02,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:02,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:33:02,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:02,646 INFO L87 Difference]: Start difference. First operand 3192 states and 3977 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:33:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:04,479 INFO L93 Difference]: Finished difference Result 9248 states and 11441 transitions. [2022-11-18 19:33:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:33:04,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-18 19:33:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:04,497 INFO L225 Difference]: With dead ends: 9248 [2022-11-18 19:33:04,498 INFO L226 Difference]: Without dead ends: 5433 [2022-11-18 19:33:04,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:33:04,506 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1161 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:04,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1493 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:33:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-11-18 19:33:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5086. [2022-11-18 19:33:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3956 states have (on average 1.2287664307381194) internal successors, (4861), 4022 states have internal predecessors, (4861), 566 states have call successors, (566), 447 states have call predecessors, (566), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2022-11-18 19:33:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 6281 transitions. [2022-11-18 19:33:05,007 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 6281 transitions. Word has length 84 [2022-11-18 19:33:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:05,007 INFO L495 AbstractCegarLoop]: Abstraction has 5086 states and 6281 transitions. [2022-11-18 19:33:05,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:33:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 6281 transitions. [2022-11-18 19:33:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 19:33:05,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:05,019 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:05,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:33:05,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1990740177, now seen corresponding path program 1 times [2022-11-18 19:33:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:05,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344884913] [2022-11-18 19:33:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:33:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:33:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:33:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:33:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:33:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:33:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:33:05,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:05,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344884913] [2022-11-18 19:33:05,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344884913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:05,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:05,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:33:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613326856] [2022-11-18 19:33:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:33:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:33:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:33:05,184 INFO L87 Difference]: Start difference. First operand 5086 states and 6281 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:33:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:07,079 INFO L93 Difference]: Finished difference Result 9442 states and 11544 transitions. [2022-11-18 19:33:07,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:33:07,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-18 19:33:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:07,099 INFO L225 Difference]: With dead ends: 9442 [2022-11-18 19:33:07,099 INFO L226 Difference]: Without dead ends: 5165 [2022-11-18 19:33:07,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:33:07,111 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 2117 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:07,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 1268 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:33:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2022-11-18 19:33:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4794. [2022-11-18 19:33:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.2074353448275863) internal successors, (4482), 3780 states have internal predecessors, (4482), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-11-18 19:33:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5763 transitions. [2022-11-18 19:33:07,641 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5763 transitions. Word has length 93 [2022-11-18 19:33:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:07,641 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 5763 transitions. [2022-11-18 19:33:07,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:33:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5763 transitions. [2022-11-18 19:33:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:07,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:07,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:07,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:33:07,645 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash 991651678, now seen corresponding path program 1 times [2022-11-18 19:33:07,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:07,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585631673] [2022-11-18 19:33:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:07,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:07,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:07,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585631673] [2022-11-18 19:33:07,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585631673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:07,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:07,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:07,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745881867] [2022-11-18 19:33:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:07,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:07,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:07,761 INFO L87 Difference]: Start difference. First operand 4794 states and 5763 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:09,687 INFO L93 Difference]: Finished difference Result 5085 states and 6223 transitions. [2022-11-18 19:33:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:33:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:09,705 INFO L225 Difference]: With dead ends: 5085 [2022-11-18 19:33:09,705 INFO L226 Difference]: Without dead ends: 4870 [2022-11-18 19:33:09,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:33:09,709 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 684 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:09,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 688 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:33:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2022-11-18 19:33:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4794. [2022-11-18 19:33:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.207165948275862) internal successors, (4481), 3780 states have internal predecessors, (4481), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-11-18 19:33:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5762 transitions. [2022-11-18 19:33:10,550 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5762 transitions. Word has length 112 [2022-11-18 19:33:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:10,551 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 5762 transitions. [2022-11-18 19:33:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5762 transitions. [2022-11-18 19:33:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:10,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:10,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:33:10,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1396912352, now seen corresponding path program 1 times [2022-11-18 19:33:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550368426] [2022-11-18 19:33:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:10,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:10,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550368426] [2022-11-18 19:33:10,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550368426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:10,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:10,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:10,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884608794] [2022-11-18 19:33:10,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:10,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:10,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:10,783 INFO L87 Difference]: Start difference. First operand 4794 states and 5762 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:14,141 INFO L93 Difference]: Finished difference Result 5391 states and 6718 transitions. [2022-11-18 19:33:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:14,156 INFO L225 Difference]: With dead ends: 5391 [2022-11-18 19:33:14,156 INFO L226 Difference]: Without dead ends: 5178 [2022-11-18 19:33:14,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:14,159 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1048 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:14,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1723 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:33:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2022-11-18 19:33:14,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5017. [2022-11-18 19:33:14,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3910 states have (on average 1.2255754475703324) internal successors, (4792), 3980 states have internal predecessors, (4792), 553 states have call successors, (553), 435 states have call predecessors, (553), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2022-11-18 19:33:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6114 transitions. [2022-11-18 19:33:14,811 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6114 transitions. Word has length 112 [2022-11-18 19:33:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:14,811 INFO L495 AbstractCegarLoop]: Abstraction has 5017 states and 6114 transitions. [2022-11-18 19:33:14,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6114 transitions. [2022-11-18 19:33:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:14,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:14,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:14,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:33:14,816 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:14,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1279080030, now seen corresponding path program 1 times [2022-11-18 19:33:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:14,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698290686] [2022-11-18 19:33:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:14,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:14,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:14,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698290686] [2022-11-18 19:33:14,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698290686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:14,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:14,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:14,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213819545] [2022-11-18 19:33:14,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:14,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:14,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:14,998 INFO L87 Difference]: Start difference. First operand 5017 states and 6114 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:18,213 INFO L93 Difference]: Finished difference Result 6150 states and 7910 transitions. [2022-11-18 19:33:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:18,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:18,236 INFO L225 Difference]: With dead ends: 6150 [2022-11-18 19:33:18,236 INFO L226 Difference]: Without dead ends: 5716 [2022-11-18 19:33:18,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:18,242 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1073 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:18,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1635 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:33:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2022-11-18 19:33:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5427. [2022-11-18 19:33:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 4276 states have (on average 1.2523386342376053) internal successors, (5355), 4348 states have internal predecessors, (5355), 583 states have call successors, (583), 447 states have call predecessors, (583), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2022-11-18 19:33:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 6747 transitions. [2022-11-18 19:33:19,108 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 6747 transitions. Word has length 112 [2022-11-18 19:33:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:19,108 INFO L495 AbstractCegarLoop]: Abstraction has 5427 states and 6747 transitions. [2022-11-18 19:33:19,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 6747 transitions. [2022-11-18 19:33:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:19,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:19,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:19,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:33:19,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash 395571040, now seen corresponding path program 1 times [2022-11-18 19:33:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:19,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981404476] [2022-11-18 19:33:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981404476] [2022-11-18 19:33:19,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981404476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:19,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:19,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895658778] [2022-11-18 19:33:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:19,286 INFO L87 Difference]: Start difference. First operand 5427 states and 6747 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:22,736 INFO L93 Difference]: Finished difference Result 7634 states and 10235 transitions. [2022-11-18 19:33:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:22,757 INFO L225 Difference]: With dead ends: 7634 [2022-11-18 19:33:22,758 INFO L226 Difference]: Without dead ends: 6790 [2022-11-18 19:33:22,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:22,764 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1048 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:22,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1720 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:33:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2022-11-18 19:33:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6249. [2022-11-18 19:33:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 5010 states have (on average 1.2940119760479043) internal successors, (6483), 5086 states have internal predecessors, (6483), 643 states have call successors, (643), 471 states have call predecessors, (643), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2022-11-18 19:33:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8021 transitions. [2022-11-18 19:33:23,599 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8021 transitions. Word has length 112 [2022-11-18 19:33:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:23,600 INFO L495 AbstractCegarLoop]: Abstraction has 6249 states and 8021 transitions. [2022-11-18 19:33:23,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8021 transitions. [2022-11-18 19:33:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:23,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:23,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:23,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:33:23,605 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash 367070750, now seen corresponding path program 1 times [2022-11-18 19:33:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:23,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427498294] [2022-11-18 19:33:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:23,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:23,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:23,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427498294] [2022-11-18 19:33:23,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427498294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:23,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:23,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334832888] [2022-11-18 19:33:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:23,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:23,779 INFO L87 Difference]: Start difference. First operand 6249 states and 8021 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:27,505 INFO L93 Difference]: Finished difference Result 10600 states and 14899 transitions. [2022-11-18 19:33:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:27,540 INFO L225 Difference]: With dead ends: 10600 [2022-11-18 19:33:27,541 INFO L226 Difference]: Without dead ends: 8934 [2022-11-18 19:33:27,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:27,551 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1048 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:27,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1720 Invalid, 2415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:33:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8934 states. [2022-11-18 19:33:28,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8934 to 7899. [2022-11-18 19:33:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 6484 states have (on average 1.3490129549660703) internal successors, (8747), 6568 states have internal predecessors, (8747), 763 states have call successors, (763), 519 states have call predecessors, (763), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2022-11-18 19:33:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10595 transitions. [2022-11-18 19:33:28,674 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10595 transitions. Word has length 112 [2022-11-18 19:33:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:28,675 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 10595 transitions. [2022-11-18 19:33:28,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10595 transitions. [2022-11-18 19:33:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:28,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:28,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:28,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:33:28,682 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1573511264, now seen corresponding path program 1 times [2022-11-18 19:33:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:28,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694519506] [2022-11-18 19:33:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:28,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694519506] [2022-11-18 19:33:28,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694519506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:28,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:28,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963035986] [2022-11-18 19:33:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:28,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:28,838 INFO L87 Difference]: Start difference. First operand 7899 states and 10595 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:32,882 INFO L93 Difference]: Finished difference Result 16530 states and 24283 transitions. [2022-11-18 19:33:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:32,929 INFO L225 Difference]: With dead ends: 16530 [2022-11-18 19:33:32,929 INFO L226 Difference]: Without dead ends: 13214 [2022-11-18 19:33:32,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:32,945 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1048 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:32,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1720 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:33:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2022-11-18 19:33:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 11213. [2022-11-18 19:33:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 9446 states have (on average 1.40747406309549) internal successors, (13295), 9546 states have internal predecessors, (13295), 1003 states have call successors, (1003), 615 states have call predecessors, (1003), 762 states have return successors, (1519), 1085 states have call predecessors, (1519), 1002 states have call successors, (1519) [2022-11-18 19:33:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 15817 transitions. [2022-11-18 19:33:34,485 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 15817 transitions. Word has length 112 [2022-11-18 19:33:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:34,485 INFO L495 AbstractCegarLoop]: Abstraction has 11213 states and 15817 transitions. [2022-11-18 19:33:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 15817 transitions. [2022-11-18 19:33:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:34,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:34,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:34,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:33:34,495 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 303551966, now seen corresponding path program 1 times [2022-11-18 19:33:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:34,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235613032] [2022-11-18 19:33:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:34,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:34,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235613032] [2022-11-18 19:33:34,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235613032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:34,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:34,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:34,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632082203] [2022-11-18 19:33:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:34,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:34,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:34,749 INFO L87 Difference]: Start difference. First operand 11213 states and 15817 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:40,034 INFO L93 Difference]: Finished difference Result 28388 states and 43239 transitions. [2022-11-18 19:33:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:40,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:40,100 INFO L225 Difference]: With dead ends: 28388 [2022-11-18 19:33:40,101 INFO L226 Difference]: Without dead ends: 21758 [2022-11-18 19:33:40,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:40,124 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1048 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:40,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1720 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:33:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21758 states. [2022-11-18 19:33:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21758 to 17871. [2022-11-18 19:33:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 15400 states have (on average 1.4568181818181818) internal successors, (22435), 15532 states have internal predecessors, (22435), 1483 states have call successors, (1483), 807 states have call predecessors, (1483), 986 states have return successors, (2549), 1597 states have call predecessors, (2549), 1482 states have call successors, (2549) [2022-11-18 19:33:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 26467 transitions. [2022-11-18 19:33:42,405 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 26467 transitions. Word has length 112 [2022-11-18 19:33:42,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:42,405 INFO L495 AbstractCegarLoop]: Abstraction has 17871 states and 26467 transitions. [2022-11-18 19:33:42,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 26467 transitions. [2022-11-18 19:33:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:42,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:42,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:42,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:33:42,419 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash -467181600, now seen corresponding path program 1 times [2022-11-18 19:33:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:42,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327567491] [2022-11-18 19:33:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:42,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327567491] [2022-11-18 19:33:42,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327567491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:42,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:42,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:42,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521444969] [2022-11-18 19:33:42,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:42,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:42,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:42,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:42,589 INFO L87 Difference]: Start difference. First operand 17871 states and 26467 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:52,394 INFO L93 Difference]: Finished difference Result 58054 states and 90709 transitions. [2022-11-18 19:33:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:33:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:33:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:52,563 INFO L225 Difference]: With dead ends: 58054 [2022-11-18 19:33:52,563 INFO L226 Difference]: Without dead ends: 44766 [2022-11-18 19:33:52,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:33:52,609 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1117 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:52,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1710 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 19:33:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44766 states. [2022-11-18 19:33:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44766 to 31057. [2022-11-18 19:33:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31057 states, 27242 states have (on average 1.4932457235151604) internal successors, (40679), 27438 states have internal predecessors, (40679), 2379 states have call successors, (2379), 1191 states have call predecessors, (2379), 1434 states have return successors, (5031), 2557 states have call predecessors, (5031), 2378 states have call successors, (5031) [2022-11-18 19:33:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31057 states to 31057 states and 48089 transitions. [2022-11-18 19:33:57,223 INFO L78 Accepts]: Start accepts. Automaton has 31057 states and 48089 transitions. Word has length 112 [2022-11-18 19:33:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:57,223 INFO L495 AbstractCegarLoop]: Abstraction has 31057 states and 48089 transitions. [2022-11-18 19:33:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 31057 states and 48089 transitions. [2022-11-18 19:33:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:33:57,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:57,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:33:57,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1461875298, now seen corresponding path program 1 times [2022-11-18 19:33:57,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:57,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443298516] [2022-11-18 19:33:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:57,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:33:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:33:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:33:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:33:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:57,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:57,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443298516] [2022-11-18 19:33:57,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443298516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:57,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:57,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:57,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030628720] [2022-11-18 19:33:57,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:57,574 INFO L87 Difference]: Start difference. First operand 31057 states and 48089 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:34:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:13,287 INFO L93 Difference]: Finished difference Result 107531 states and 172649 transitions. [2022-11-18 19:34:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:34:13,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-18 19:34:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:13,641 INFO L225 Difference]: With dead ends: 107531 [2022-11-18 19:34:13,641 INFO L226 Difference]: Without dead ends: 81057 [2022-11-18 19:34:13,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:34:13,767 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1110 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:13,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1710 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:34:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81057 states.