./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ --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 96156757eee15296b224bdbd46e536be48cf02aebfdcfed98772fa0c04995e7e --- 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-dbf71c6-m [2022-10-17 10:36:37,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:36:37,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:36:37,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:36:37,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:36:37,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:36:37,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:36:37,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:36:37,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:36:37,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:36:37,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:36:37,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:36:37,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:36:37,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:36:37,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:36:37,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:36:37,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:36:37,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:36:37,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:36:37,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:36:37,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:36:37,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:36:37,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:36:37,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:36:37,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:36:37,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:36:37,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:36:37,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:36:37,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:36:37,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:36:37,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:36:37,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:36:37,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:36:37,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:36:37,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:36:37,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:36:37,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:36:37,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:36:37,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:36:37,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:36:37,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:36:37,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:36:37,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:36:37,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:36:37,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:36:37,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:36:37,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:36:37,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:36:37,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:36:37,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:36:37,325 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:36:37,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:36:37,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:36:37,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:36:37,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:36:37,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:36:37,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:36:37,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:36:37,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:36:37,327 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:36:37,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:36:37,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:36:37,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:36:37,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:36:37,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:36:37,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:36:37,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:37,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:36:37,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:36:37,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:36:37,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:36:37,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:36:37,330 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:36:37,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:36:37,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:36:37,330 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_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96156757eee15296b224bdbd46e536be48cf02aebfdcfed98772fa0c04995e7e [2022-10-17 10:36:37,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:36:37,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:36:37,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:36:37,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:36:37,688 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:36:37,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem15_label37.c [2022-10-17 10:36:37,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/data/cd0fa7f3b/591ccb8a274a4ae4a08a93477f52ae2a/FLAG2db4e6480 [2022-10-17 10:36:38,467 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:36:38,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/sv-benchmarks/c/eca-rers2012/Problem15_label37.c [2022-10-17 10:36:38,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/data/cd0fa7f3b/591ccb8a274a4ae4a08a93477f52ae2a/FLAG2db4e6480 [2022-10-17 10:36:38,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/data/cd0fa7f3b/591ccb8a274a4ae4a08a93477f52ae2a [2022-10-17 10:36:38,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:36:38,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:36:38,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:38,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:36:38,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:36:38,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:38" (1/1) ... [2022-10-17 10:36:38,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686d0b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:38, skipping insertion in model container [2022-10-17 10:36:38,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:38" (1/1) ... [2022-10-17 10:36:38,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:36:38,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:36:39,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/sv-benchmarks/c/eca-rers2012/Problem15_label37.c[2577,2590] [2022-10-17 10:36:39,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:39,576 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:36:39,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/sv-benchmarks/c/eca-rers2012/Problem15_label37.c[2577,2590] [2022-10-17 10:36:39,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:39,956 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:36:39,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39 WrapperNode [2022-10-17 10:36:39,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:39,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:39,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:36:39,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:36:39,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,190 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-10-17 10:36:40,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:40,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:36:40,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:36:40,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:36:40,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:36:40,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:36:40,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:36:40,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:36:40,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:40,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:40,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:36:40,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:36:40,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878971f4-ea8f-476f-8f19-f4c09e7b8573/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:36:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:36:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:36:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:36:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:36:40,710 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:36:40,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:36:44,136 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:36:44,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:36:44,161 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:36:44,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:44 BoogieIcfgContainer [2022-10-17 10:36:44,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:36:44,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:36:44,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:36:44,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:36:44,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:36:38" (1/3) ... [2022-10-17 10:36:44,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a73d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:44, skipping insertion in model container [2022-10-17 10:36:44,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (2/3) ... [2022-10-17 10:36:44,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a73d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:44, skipping insertion in model container [2022-10-17 10:36:44,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:44" (3/3) ... [2022-10-17 10:36:44,176 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label37.c [2022-10-17 10:36:44,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:36:44,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:36:44,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:36:44,298 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;@77fe47c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:36:44,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:36:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:36:44,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:44,314 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] [2022-10-17 10:36:44,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:36:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash -279853278, now seen corresponding path program 1 times [2022-10-17 10:36:44,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:44,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365332837] [2022-10-17 10:36:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:44,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:44,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365332837] [2022-10-17 10:36:44,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365332837] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:44,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:44,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:36:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005942200] [2022-10-17 10:36:44,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:36:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:36:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:36:44,672 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:47,913 INFO L93 Difference]: Finished difference Result 1154 states and 2106 transitions. [2022-10-17 10:36:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:36:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-10-17 10:36:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:47,936 INFO L225 Difference]: With dead ends: 1154 [2022-10-17 10:36:47,936 INFO L226 Difference]: Without dead ends: 665 [2022-10-17 10:36:47,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:36:47,946 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 301 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:47,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 383 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-17 10:36:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-10-17 10:36:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2022-10-17 10:36:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.4818731117824773) internal successors, (981), 662 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 981 transitions. [2022-10-17 10:36:48,035 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 981 transitions. Word has length 20 [2022-10-17 10:36:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:48,036 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 981 transitions. [2022-10-17 10:36:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 981 transitions. [2022-10-17 10:36:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 10:36:48,040 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:48,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:36:48,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:36:48,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash -542823939, now seen corresponding path program 1 times [2022-10-17 10:36:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:48,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365858000] [2022-10-17 10:36:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:48,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365858000] [2022-10-17 10:36:48,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365858000] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:48,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:48,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:36:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003601289] [2022-10-17 10:36:48,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:48,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:36:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:36:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:36:48,552 INFO L87 Difference]: Start difference. First operand 663 states and 981 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:50,710 INFO L93 Difference]: Finished difference Result 1624 states and 2315 transitions. [2022-10-17 10:36:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:36:50,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-10-17 10:36:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:50,722 INFO L225 Difference]: With dead ends: 1624 [2022-10-17 10:36:50,723 INFO L226 Difference]: Without dead ends: 963 [2022-10-17 10:36:50,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:36:50,728 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:50,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 337 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:36:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-10-17 10:36:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-10-17 10:36:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.362785862785863) internal successors, (1311), 962 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1311 transitions. [2022-10-17 10:36:50,773 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1311 transitions. Word has length 85 [2022-10-17 10:36:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:50,774 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1311 transitions. [2022-10-17 10:36:50,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:50,774 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1311 transitions. [2022-10-17 10:36:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-17 10:36:50,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:50,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:50,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:36:50,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:36:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:50,780 INFO L85 PathProgramCache]: Analyzing trace with hash -531726772, now seen corresponding path program 1 times [2022-10-17 10:36:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:50,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359780094] [2022-10-17 10:36:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:50,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359780094] [2022-10-17 10:36:51,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359780094] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:51,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:51,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:36:51,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110968098] [2022-10-17 10:36:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:51,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:36:51,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:51,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:36:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:51,200 INFO L87 Difference]: Start difference. First operand 963 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:54,212 INFO L93 Difference]: Finished difference Result 2244 states and 3201 transitions. [2022-10-17 10:36:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:36:54,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-10-17 10:36:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:54,224 INFO L225 Difference]: With dead ends: 2244 [2022-10-17 10:36:54,224 INFO L226 Difference]: Without dead ends: 1582 [2022-10-17 10:36:54,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:54,235 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 362 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:54,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 365 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-17 10:36:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-10-17 10:36:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1266. [2022-10-17 10:36:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 1.3043478260869565) internal successors, (1650), 1265 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1650 transitions. [2022-10-17 10:36:54,279 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1650 transitions. Word has length 90 [2022-10-17 10:36:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:54,280 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 1650 transitions. [2022-10-17 10:36:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1650 transitions. [2022-10-17 10:36:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-10-17 10:36:54,295 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:54,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:54,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:36:54,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:36:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1830048465, now seen corresponding path program 1 times [2022-10-17 10:36:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:54,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879034003] [2022-10-17 10:36:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:54,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:54,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879034003] [2022-10-17 10:36:54,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879034003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:54,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:54,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:36:54,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226818405] [2022-10-17 10:36:54,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:54,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:36:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:54,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:36:54,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:36:54,568 INFO L87 Difference]: Start difference. First operand 1266 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:58,730 INFO L93 Difference]: Finished difference Result 4668 states and 6169 transitions. [2022-10-17 10:36:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:36:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2022-10-17 10:36:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:58,751 INFO L225 Difference]: With dead ends: 4668 [2022-10-17 10:36:58,751 INFO L226 Difference]: Without dead ends: 3404 [2022-10-17 10:36:58,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:36:58,755 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 488 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:58,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 346 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-10-17 10:36:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2022-10-17 10:36:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3381. [2022-10-17 10:36:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 1.2363905325443787) internal successors, (4179), 3380 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4179 transitions. [2022-10-17 10:36:58,903 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4179 transitions. Word has length 186 [2022-10-17 10:36:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:58,905 INFO L495 AbstractCegarLoop]: Abstraction has 3381 states and 4179 transitions. [2022-10-17 10:36:58,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:58,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4179 transitions. [2022-10-17 10:36:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-17 10:36:58,912 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:58,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:58,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:36:58,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:36:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1239471239, now seen corresponding path program 1 times [2022-10-17 10:36:58,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:58,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059015816] [2022-10-17 10:36:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:58,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-10-17 10:36:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:59,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059015816] [2022-10-17 10:36:59,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059015816] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:59,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:59,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:36:59,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511590101] [2022-10-17 10:36:59,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:59,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:36:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:36:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:36:59,201 INFO L87 Difference]: Start difference. First operand 3381 states and 4179 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:00,991 INFO L93 Difference]: Finished difference Result 8563 states and 10751 transitions. [2022-10-17 10:37:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:37:00,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 190 [2022-10-17 10:37:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:01,032 INFO L225 Difference]: With dead ends: 8563 [2022-10-17 10:37:01,032 INFO L226 Difference]: Without dead ends: 5483 [2022-10-17 10:37:01,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:37:01,041 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:01,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 339 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:37:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2022-10-17 10:37:01,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5478. [2022-10-17 10:37:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.1683403322987036) internal successors, (6399), 5477 states have internal predecessors, (6399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6399 transitions. [2022-10-17 10:37:01,198 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6399 transitions. Word has length 190 [2022-10-17 10:37:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:01,199 INFO L495 AbstractCegarLoop]: Abstraction has 5478 states and 6399 transitions. [2022-10-17 10:37:01,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6399 transitions. [2022-10-17 10:37:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-10-17 10:37:01,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:01,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:37:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:37:01,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 19134349, now seen corresponding path program 1 times [2022-10-17 10:37:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:01,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322845139] [2022-10-17 10:37:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:37:02,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:02,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322845139] [2022-10-17 10:37:02,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322845139] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:02,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:02,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:37:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075736357] [2022-10-17 10:37:02,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:37:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:37:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:37:02,161 INFO L87 Difference]: Start difference. First operand 5478 states and 6399 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:04,130 INFO L93 Difference]: Finished difference Result 10655 states and 12485 transitions. [2022-10-17 10:37:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:37:04,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 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 292 [2022-10-17 10:37:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:04,166 INFO L225 Difference]: With dead ends: 10655 [2022-10-17 10:37:04,166 INFO L226 Difference]: Without dead ends: 5478 [2022-10-17 10:37:04,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:37:04,176 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:04,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 359 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 10:37:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2022-10-17 10:37:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 5478. [2022-10-17 10:37:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.1672448420668249) internal successors, (6393), 5477 states have internal predecessors, (6393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6393 transitions. [2022-10-17 10:37:04,322 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6393 transitions. Word has length 292 [2022-10-17 10:37:04,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:04,323 INFO L495 AbstractCegarLoop]: Abstraction has 5478 states and 6393 transitions. [2022-10-17 10:37:04,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6393 transitions. [2022-10-17 10:37:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-10-17 10:37:04,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:04,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:37:04,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:37:04,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -453362850, now seen corresponding path program 1 times [2022-10-17 10:37:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:04,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891596366] [2022-10-17 10:37:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:04,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-17 10:37:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891596366] [2022-10-17 10:37:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891596366] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:04,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:04,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:37:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445602725] [2022-10-17 10:37:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:37:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:37:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:37:04,745 INFO L87 Difference]: Start difference. First operand 5478 states and 6393 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:07,784 INFO L93 Difference]: Finished difference Result 11851 states and 14145 transitions. [2022-10-17 10:37:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:37:07,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 307 [2022-10-17 10:37:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:07,826 INFO L225 Difference]: With dead ends: 11851 [2022-10-17 10:37:07,826 INFO L226 Difference]: Without dead ends: 6674 [2022-10-17 10:37:07,833 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 [2022-10-17 10:37:07,837 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 295 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:07,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 322 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-17 10:37:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2022-10-17 10:37:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 4577. [2022-10-17 10:37:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 4576 states have (on average 1.1840034965034965) internal successors, (5418), 4576 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 5418 transitions. [2022-10-17 10:37:07,999 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 5418 transitions. Word has length 307 [2022-10-17 10:37:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:08,000 INFO L495 AbstractCegarLoop]: Abstraction has 4577 states and 5418 transitions. [2022-10-17 10:37:08,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 5418 transitions. [2022-10-17 10:37:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-10-17 10:37:08,010 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:08,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:37:08,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:37:08,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2061399007, now seen corresponding path program 1 times [2022-10-17 10:37:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:08,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475860197] [2022-10-17 10:37:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-10-17 10:37:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:08,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475860197] [2022-10-17 10:37:08,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475860197] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:08,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:08,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:37:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693298498] [2022-10-17 10:37:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:08,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:37:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:37:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:37:08,467 INFO L87 Difference]: Start difference. First operand 4577 states and 5418 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)