./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 012e1f5557529d9c6d354ecfc780b79f81b26027633a201d78f177083b7074d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:49:40,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:49:40,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:49:40,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:49:40,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:49:40,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:49:40,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:49:40,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:49:40,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:49:40,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:49:40,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:49:40,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:49:40,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:49:40,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:49:40,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:49:40,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:49:40,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:49:40,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:49:40,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:49:40,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:49:40,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:49:40,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:49:40,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:49:40,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:49:40,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:49:40,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:49:40,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:49:40,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:49:40,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:49:40,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:49:40,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:49:40,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:49:40,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:49:40,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:49:40,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:49:40,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:49:40,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:49:40,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:49:40,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:49:40,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:49:40,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:49:40,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:49:40,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:49:40,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:49:40,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:49:40,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:49:40,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:49:40,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:49:40,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:49:40,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:49:40,221 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:49:40,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:49:40,221 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:49:40,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:49:40,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:49:40,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:49:40,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:49:40,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:49:40,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:49:40,223 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:49:40,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:49:40,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:49:40,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:49:40,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:49:40,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:49:40,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:49:40,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:40,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:49:40,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:49:40,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:49:40,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:49:40,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:49:40,226 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:49:40,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:49:40,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:49:40,226 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_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012e1f5557529d9c6d354ecfc780b79f81b26027633a201d78f177083b7074d6 [2022-11-16 11:49:40,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:49:40,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:49:40,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:49:40,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:49:40,599 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:49:40,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-11-16 11:49:40,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/data/1a5cab117/0fe2004b32de45feb3f5d759bfc34478/FLAG59e9fbfb2 [2022-11-16 11:49:41,271 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:49:41,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-11-16 11:49:41,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/data/1a5cab117/0fe2004b32de45feb3f5d759bfc34478/FLAG59e9fbfb2 [2022-11-16 11:49:41,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/data/1a5cab117/0fe2004b32de45feb3f5d759bfc34478 [2022-11-16 11:49:41,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:49:41,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:49:41,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:41,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:49:41,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:49:41,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:41" (1/1) ... [2022-11-16 11:49:41,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5d50f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:41, skipping insertion in model container [2022-11-16 11:49:41,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:41" (1/1) ... [2022-11-16 11:49:41,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:49:41,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:49:41,963 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13674,13687] [2022-11-16 11:49:42,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:42,091 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:49:42,187 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13674,13687] [2022-11-16 11:49:42,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:42,264 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:49:42,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42 WrapperNode [2022-11-16 11:49:42,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:42,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:42,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:49:42,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:49:42,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,369 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1364 [2022-11-16 11:49:42,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:42,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:49:42,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:49:42,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:49:42,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:49:42,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:49:42,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:49:42,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:49:42,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (1/1) ... [2022-11-16 11:49:42,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:42,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:49:42,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c857fd58-d5d1-495c-bb4c-04dc1c0cb779/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:49:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:49:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:49:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:49:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:49:42,794 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:49:42,796 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:49:44,215 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:49:44,239 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:49:44,239 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:49:44,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:44 BoogieIcfgContainer [2022-11-16 11:49:44,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:49:44,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:49:44,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:49:44,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:49:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:49:41" (1/3) ... [2022-11-16 11:49:44,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bad4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:44, skipping insertion in model container [2022-11-16 11:49:44,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:42" (2/3) ... [2022-11-16 11:49:44,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bad4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:44, skipping insertion in model container [2022-11-16 11:49:44,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:44" (3/3) ... [2022-11-16 11:49:44,256 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-11-16 11:49:44,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:49:44,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:49:44,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:49:44,384 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;@61b3166f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:49:44,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:49:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 340 states have (on average 1.7970588235294118) internal successors, (611), 341 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:49:44,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:44,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:44,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:44,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1594884720, now seen corresponding path program 1 times [2022-11-16 11:49:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:44,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798413236] [2022-11-16 11:49:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:45,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:45,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798413236] [2022-11-16 11:49:45,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798413236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:45,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:45,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:45,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244489456] [2022-11-16 11:49:45,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:45,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:45,097 INFO L87 Difference]: Start difference. First operand has 342 states, 340 states have (on average 1.7970588235294118) internal successors, (611), 341 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:45,237 INFO L93 Difference]: Finished difference Result 628 states and 1091 transitions. [2022-11-16 11:49:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:45,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-11-16 11:49:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:45,254 INFO L225 Difference]: With dead ends: 628 [2022-11-16 11:49:45,254 INFO L226 Difference]: Without dead ends: 473 [2022-11-16 11:49:45,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:45,262 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 256 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1132 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-16 11:49:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2022-11-16 11:49:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.6574468085106382) internal successors, (779), 470 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 779 transitions. [2022-11-16 11:49:45,389 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 779 transitions. Word has length 118 [2022-11-16 11:49:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:45,395 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 779 transitions. [2022-11-16 11:49:45,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 779 transitions. [2022-11-16 11:49:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:49:45,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:45,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:45,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:49:45,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash -910979864, now seen corresponding path program 1 times [2022-11-16 11:49:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:45,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964217062] [2022-11-16 11:49:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:45,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964217062] [2022-11-16 11:49:45,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964217062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:45,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:45,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:45,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102307598] [2022-11-16 11:49:45,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:45,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:45,657 INFO L87 Difference]: Start difference. First operand 471 states and 779 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:45,740 INFO L93 Difference]: Finished difference Result 1007 states and 1675 transitions. [2022-11-16 11:49:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:45,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-11-16 11:49:45,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:45,745 INFO L225 Difference]: With dead ends: 1007 [2022-11-16 11:49:45,745 INFO L226 Difference]: Without dead ends: 729 [2022-11-16 11:49:45,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:45,748 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 218 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:45,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1075 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-11-16 11:49:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2022-11-16 11:49:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 1.6611570247933884) internal successors, (1206), 726 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1206 transitions. [2022-11-16 11:49:45,809 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1206 transitions. Word has length 121 [2022-11-16 11:49:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:45,812 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1206 transitions. [2022-11-16 11:49:45,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1206 transitions. [2022-11-16 11:49:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 11:49:45,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:45,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:49:45,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash -195863697, now seen corresponding path program 1 times [2022-11-16 11:49:45,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:45,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953514177] [2022-11-16 11:49:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:46,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:46,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953514177] [2022-11-16 11:49:46,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953514177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:46,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:46,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082300580] [2022-11-16 11:49:46,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:46,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:46,095 INFO L87 Difference]: Start difference. First operand 727 states and 1206 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:46,168 INFO L93 Difference]: Finished difference Result 1755 states and 2920 transitions. [2022-11-16 11:49:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-16 11:49:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:46,177 INFO L225 Difference]: With dead ends: 1755 [2022-11-16 11:49:46,177 INFO L226 Difference]: Without dead ends: 1221 [2022-11-16 11:49:46,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:46,189 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 211 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:46,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1076 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-11-16 11:49:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1219. [2022-11-16 11:49:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 1.6600985221674878) internal successors, (2022), 1218 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2022 transitions. [2022-11-16 11:49:46,276 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2022 transitions. Word has length 124 [2022-11-16 11:49:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:46,278 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 2022 transitions. [2022-11-16 11:49:46,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2022 transitions. [2022-11-16 11:49:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 11:49:46,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:46,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:46,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:49:46,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1851247163, now seen corresponding path program 1 times [2022-11-16 11:49:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:46,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936076064] [2022-11-16 11:49:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:46,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936076064] [2022-11-16 11:49:46,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936076064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:46,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:46,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012266995] [2022-11-16 11:49:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:46,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:46,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:46,495 INFO L87 Difference]: Start difference. First operand 1219 states and 2022 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:46,605 INFO L93 Difference]: Finished difference Result 3191 states and 5296 transitions. [2022-11-16 11:49:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-16 11:49:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:46,616 INFO L225 Difference]: With dead ends: 3191 [2022-11-16 11:49:46,616 INFO L226 Difference]: Without dead ends: 2165 [2022-11-16 11:49:46,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:46,631 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 204 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:46,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1077 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-11-16 11:49:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2163. [2022-11-16 11:49:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.6549491211840888) internal successors, (3578), 2162 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3578 transitions. [2022-11-16 11:49:46,764 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3578 transitions. Word has length 127 [2022-11-16 11:49:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:46,764 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3578 transitions. [2022-11-16 11:49:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3578 transitions. [2022-11-16 11:49:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 11:49:46,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:46,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:46,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:49:46,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash -559497898, now seen corresponding path program 1 times [2022-11-16 11:49:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:46,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084036514] [2022-11-16 11:49:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:47,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084036514] [2022-11-16 11:49:47,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084036514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:47,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:47,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:49:47,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552900328] [2022-11-16 11:49:47,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:47,032 INFO L87 Difference]: Start difference. First operand 2163 states and 3578 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:48,097 INFO L93 Difference]: Finished difference Result 11283 states and 18810 transitions. [2022-11-16 11:49:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:49:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-11-16 11:49:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:48,137 INFO L225 Difference]: With dead ends: 11283 [2022-11-16 11:49:48,137 INFO L226 Difference]: Without dead ends: 9313 [2022-11-16 11:49:48,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:49:48,145 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 2036 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:48,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 5187 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:49:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2022-11-16 11:49:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 4001. [2022-11-16 11:49:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 1.65525) internal successors, (6621), 4000 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6621 transitions. [2022-11-16 11:49:48,672 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6621 transitions. Word has length 130 [2022-11-16 11:49:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:48,674 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 6621 transitions. [2022-11-16 11:49:48,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6621 transitions. [2022-11-16 11:49:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 11:49:48,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:48,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:48,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:49:48,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash -231627666, now seen corresponding path program 1 times [2022-11-16 11:49:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:48,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482934905] [2022-11-16 11:49:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:48,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:48,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482934905] [2022-11-16 11:49:48,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482934905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:48,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:48,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:49:48,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601098766] [2022-11-16 11:49:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:49:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:49:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:49:48,944 INFO L87 Difference]: Start difference. First operand 4001 states and 6621 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:49,935 INFO L93 Difference]: Finished difference Result 11713 states and 19481 transitions. [2022-11-16 11:49:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:49:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-11-16 11:49:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:49,965 INFO L225 Difference]: With dead ends: 11713 [2022-11-16 11:49:49,965 INFO L226 Difference]: Without dead ends: 7905 [2022-11-16 11:49:49,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:49:49,972 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 718 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:49,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1851 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:49:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2022-11-16 11:49:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 5936. [2022-11-16 11:49:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 1.6572872788542545) internal successors, (9836), 5935 states have internal predecessors, (9836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9836 transitions. [2022-11-16 11:49:50,664 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9836 transitions. Word has length 131 [2022-11-16 11:49:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:50,664 INFO L495 AbstractCegarLoop]: Abstraction has 5936 states and 9836 transitions. [2022-11-16 11:49:50,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9836 transitions. [2022-11-16 11:49:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:49:50,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:50,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:50,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:49:50,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:50,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1540206583, now seen corresponding path program 1 times [2022-11-16 11:49:50,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:50,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518446502] [2022-11-16 11:49:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:50,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518446502] [2022-11-16 11:49:50,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518446502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:50,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:50,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:50,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756017711] [2022-11-16 11:49:50,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:50,773 INFO L87 Difference]: Start difference. First operand 5936 states and 9836 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:51,909 INFO L93 Difference]: Finished difference Result 13025 states and 21678 transitions. [2022-11-16 11:49:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:51,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-16 11:49:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:51,959 INFO L225 Difference]: With dead ends: 13025 [2022-11-16 11:49:51,959 INFO L226 Difference]: Without dead ends: 9024 [2022-11-16 11:49:51,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:51,969 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 226 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:51,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1256 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2022-11-16 11:49:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 9022. [2022-11-16 11:49:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9022 states, 9021 states have (on average 1.6572442079592062) internal successors, (14950), 9021 states have internal predecessors, (14950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 14950 transitions. [2022-11-16 11:49:53,008 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 14950 transitions. Word has length 132 [2022-11-16 11:49:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:53,008 INFO L495 AbstractCegarLoop]: Abstraction has 9022 states and 14950 transitions. [2022-11-16 11:49:53,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 14950 transitions. [2022-11-16 11:49:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:49:53,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:53,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:53,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:49:53,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 579129211, now seen corresponding path program 1 times [2022-11-16 11:49:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:53,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788843340] [2022-11-16 11:49:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:53,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:53,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788843340] [2022-11-16 11:49:53,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788843340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:53,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:53,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:53,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530442851] [2022-11-16 11:49:53,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:53,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:53,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:53,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:53,138 INFO L87 Difference]: Start difference. First operand 9022 states and 14950 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:54,412 INFO L93 Difference]: Finished difference Result 17368 states and 28819 transitions. [2022-11-16 11:49:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:54,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-16 11:49:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:54,451 INFO L225 Difference]: With dead ends: 17368 [2022-11-16 11:49:54,451 INFO L226 Difference]: Without dead ends: 12606 [2022-11-16 11:49:54,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:54,460 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 219 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:54,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1232 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12606 states. [2022-11-16 11:49:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12606 to 12604. [2022-11-16 11:49:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12604 states, 12603 states have (on average 1.653574545743077) internal successors, (20840), 12603 states have internal predecessors, (20840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12604 states to 12604 states and 20840 transitions. [2022-11-16 11:49:56,049 INFO L78 Accepts]: Start accepts. Automaton has 12604 states and 20840 transitions. Word has length 132 [2022-11-16 11:49:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:56,050 INFO L495 AbstractCegarLoop]: Abstraction has 12604 states and 20840 transitions. [2022-11-16 11:49:56,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 12604 states and 20840 transitions. [2022-11-16 11:49:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:49:56,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:56,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:56,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:49:56,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:56,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1676490411, now seen corresponding path program 1 times [2022-11-16 11:49:56,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:56,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317661838] [2022-11-16 11:49:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:56,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:56,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317661838] [2022-11-16 11:49:56,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317661838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:56,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:56,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956810655] [2022-11-16 11:49:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:56,166 INFO L87 Difference]: Start difference. First operand 12604 states and 20840 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:57,783 INFO L93 Difference]: Finished difference Result 24110 states and 39925 transitions. [2022-11-16 11:49:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:57,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-16 11:49:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:57,842 INFO L225 Difference]: With dead ends: 24110 [2022-11-16 11:49:57,842 INFO L226 Difference]: Without dead ends: 17468 [2022-11-16 11:49:57,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:57,860 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 212 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:57,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1199 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:49:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17468 states. [2022-11-16 11:49:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17468 to 17466. [2022-11-16 11:49:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17466 states, 17465 states have (on average 1.6494703693100488) internal successors, (28808), 17465 states have internal predecessors, (28808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17466 states to 17466 states and 28808 transitions. [2022-11-16 11:49:59,835 INFO L78 Accepts]: Start accepts. Automaton has 17466 states and 28808 transitions. Word has length 132 [2022-11-16 11:49:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:59,836 INFO L495 AbstractCegarLoop]: Abstraction has 17466 states and 28808 transitions. [2022-11-16 11:49:59,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 17466 states and 28808 transitions. [2022-11-16 11:49:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:49:59,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:59,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:59,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:49:59,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1346972957, now seen corresponding path program 1 times [2022-11-16 11:49:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:59,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830413471] [2022-11-16 11:49:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:00,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:00,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830413471] [2022-11-16 11:50:00,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830413471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:00,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:00,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:50:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913725856] [2022-11-16 11:50:00,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:00,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:00,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:00,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:00,046 INFO L87 Difference]: Start difference. First operand 17466 states and 28808 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:03,823 INFO L93 Difference]: Finished difference Result 56537 states and 93383 transitions. [2022-11-16 11:50:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:03,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-16 11:50:03,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:03,933 INFO L225 Difference]: With dead ends: 56537 [2022-11-16 11:50:03,933 INFO L226 Difference]: Without dead ends: 39310 [2022-11-16 11:50:03,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:03,961 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 716 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:03,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1612 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:50:03,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39310 states. [2022-11-16 11:50:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39310 to 28329. [2022-11-16 11:50:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28329 states, 28328 states have (on average 1.644909630048009) internal successors, (46597), 28328 states have internal predecessors, (46597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28329 states to 28329 states and 46597 transitions. [2022-11-16 11:50:07,374 INFO L78 Accepts]: Start accepts. Automaton has 28329 states and 46597 transitions. Word has length 132 [2022-11-16 11:50:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:07,374 INFO L495 AbstractCegarLoop]: Abstraction has 28329 states and 46597 transitions. [2022-11-16 11:50:07,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 28329 states and 46597 transitions. [2022-11-16 11:50:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:50:07,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:07,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:07,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:50:07,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash -434438713, now seen corresponding path program 1 times [2022-11-16 11:50:07,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:07,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228489604] [2022-11-16 11:50:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:07,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:07,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228489604] [2022-11-16 11:50:07,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228489604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:07,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:07,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291131520] [2022-11-16 11:50:07,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:07,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:07,492 INFO L87 Difference]: Start difference. First operand 28329 states and 46597 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:12,496 INFO L93 Difference]: Finished difference Result 54295 states and 89424 transitions. [2022-11-16 11:50:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:12,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-16 11:50:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:12,596 INFO L225 Difference]: With dead ends: 54295 [2022-11-16 11:50:12,597 INFO L226 Difference]: Without dead ends: 39073 [2022-11-16 11:50:12,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:12,618 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 205 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:12,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:50:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39073 states. [2022-11-16 11:50:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39073 to 39071. [2022-11-16 11:50:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39071 states, 39070 states have (on average 1.6393908369593038) internal successors, (64051), 39070 states have internal predecessors, (64051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39071 states to 39071 states and 64051 transitions. [2022-11-16 11:50:17,003 INFO L78 Accepts]: Start accepts. Automaton has 39071 states and 64051 transitions. Word has length 132 [2022-11-16 11:50:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:17,004 INFO L495 AbstractCegarLoop]: Abstraction has 39071 states and 64051 transitions. [2022-11-16 11:50:17,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 39071 states and 64051 transitions. [2022-11-16 11:50:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 11:50:17,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:17,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:17,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:50:17,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1251457259, now seen corresponding path program 1 times [2022-11-16 11:50:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:17,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234147582] [2022-11-16 11:50:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:17,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:17,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234147582] [2022-11-16 11:50:17,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234147582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:17,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:17,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:50:17,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731009520] [2022-11-16 11:50:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:17,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:17,146 INFO L87 Difference]: Start difference. First operand 39071 states and 64051 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:26,313 INFO L93 Difference]: Finished difference Result 126537 states and 207711 transitions. [2022-11-16 11:50:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-11-16 11:50:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:26,519 INFO L225 Difference]: With dead ends: 126537 [2022-11-16 11:50:26,519 INFO L226 Difference]: Without dead ends: 87727 [2022-11-16 11:50:26,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:26,568 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 714 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:26,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1848 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:50:26,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87727 states. [2022-11-16 11:50:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87727 to 63256. [2022-11-16 11:50:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63256 states, 63255 states have (on average 1.6339894079519406) internal successors, (103358), 63255 states have internal predecessors, (103358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63256 states to 63256 states and 103358 transitions. [2022-11-16 11:50:32,801 INFO L78 Accepts]: Start accepts. Automaton has 63256 states and 103358 transitions. Word has length 133 [2022-11-16 11:50:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:32,801 INFO L495 AbstractCegarLoop]: Abstraction has 63256 states and 103358 transitions. [2022-11-16 11:50:32,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 63256 states and 103358 transitions. [2022-11-16 11:50:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-16 11:50:32,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:32,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:50:32,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -193857308, now seen corresponding path program 1 times [2022-11-16 11:50:32,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:32,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060746746] [2022-11-16 11:50:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:32,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060746746] [2022-11-16 11:50:32,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060746746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:32,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:32,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:50:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066583293] [2022-11-16 11:50:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:32,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:32,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:32,947 INFO L87 Difference]: Start difference. First operand 63256 states and 103358 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)