./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46eee0da026a91c653f67365567ceb713876734d6acca1e922dede9c0b7a4734 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:31:47,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:31:47,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:31:47,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:31:47,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:31:47,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:31:47,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:31:47,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:31:47,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:31:47,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:31:47,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:31:47,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:31:47,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:31:47,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:31:47,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:31:47,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:31:47,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:31:47,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:31:47,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:31:47,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:31:47,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:31:47,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:31:47,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:31:47,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:31:47,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:31:47,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:31:47,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:31:47,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:31:47,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:31:47,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:31:47,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:31:47,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:31:47,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:31:47,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:31:47,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:31:47,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:31:47,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:31:47,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:31:47,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:31:47,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:31:47,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:31:47,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:31:47,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:31:47,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:31:47,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:31:47,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:31:47,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:31:47,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:31:47,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:31:47,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:31:47,278 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:31:47,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:31:47,279 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:31:47,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:31:47,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:31:47,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:31:47,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:31:47,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:31:47,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:31:47,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:31:47,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:31:47,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:31:47,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:31:47,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:31:47,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:31:47,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:31:47,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:47,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:31:47,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:31:47,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:31:47,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:31:47,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:31:47,285 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:31:47,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:31:47,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:31:47,286 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_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46eee0da026a91c653f67365567ceb713876734d6acca1e922dede9c0b7a4734 [2022-11-02 20:31:47,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:31:47,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:31:47,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:31:47,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:31:47,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:31:47,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-02 20:31:47,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/data/50e5d6d3e/9f4d8618252749f0b5c1593ce3f4ace1/FLAG4a299bbe2 [2022-11-02 20:31:48,475 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:31:48,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-02 20:31:48,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/data/50e5d6d3e/9f4d8618252749f0b5c1593ce3f4ace1/FLAG4a299bbe2 [2022-11-02 20:31:49,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/data/50e5d6d3e/9f4d8618252749f0b5c1593ce3f4ace1 [2022-11-02 20:31:49,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:31:49,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:31:49,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:49,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:31:49,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:31:49,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:49" (1/1) ... [2022-11-02 20:31:49,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568e2333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:49, skipping insertion in model container [2022-11-02 20:31:49,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:49" (1/1) ... [2022-11-02 20:31:49,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:31:49,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:31:49,640 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_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c[26925,26938] [2022-11-02 20:31:49,710 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_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c[32480,32493] [2022-11-02 20:31:50,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:50,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:31:50,751 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_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c[26925,26938] [2022-11-02 20:31:50,770 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_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c[32480,32493] [2022-11-02 20:31:51,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:51,453 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:31:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51 WrapperNode [2022-11-02 20:31:51,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:51,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:51,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:31:51,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:31:51,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,969 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5280 [2022-11-02 20:31:51,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:51,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:31:51,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:31:51,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:31:51,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:31:52,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:31:52,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:31:52,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:31:52,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:52,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:52,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:31:52,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76fd0c8-76d9-4c55-ba4d-3d10a4c2cd52/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:31:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:31:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:31:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:31:52,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:31:52,956 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:31:52,958 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:31:58,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:31:58,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:31:58,554 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:31:58,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:58 BoogieIcfgContainer [2022-11-02 20:31:58,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:31:58,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:31:58,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:31:58,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:31:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:31:49" (1/3) ... [2022-11-02 20:31:58,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a943806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:58, skipping insertion in model container [2022-11-02 20:31:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (2/3) ... [2022-11-02 20:31:58,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a943806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:58, skipping insertion in model container [2022-11-02 20:31:58,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:58" (3/3) ... [2022-11-02 20:31:58,572 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-02 20:31:58,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:31:58,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:31:58,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:31:58,681 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;@1f80772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:31:58,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:31:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-02 20:31:58,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:58,715 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] [2022-11-02 20:31:58,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2022-11-02 20:31:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:58,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790746437] [2022-11-02 20:31:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:59,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:59,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790746437] [2022-11-02 20:31:59,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790746437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:59,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:59,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:31:59,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901600059] [2022-11-02 20:31:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:31:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:59,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:31:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:31:59,128 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:59,230 INFO L93 Difference]: Finished difference Result 1861 states and 3516 transitions. [2022-11-02 20:31:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:31:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-02 20:31:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:59,260 INFO L225 Difference]: With dead ends: 1861 [2022-11-02 20:31:59,260 INFO L226 Difference]: Without dead ends: 899 [2022-11-02 20:31:59,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:31:59,269 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:59,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-11-02 20:31:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-11-02 20:31:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8851727982162765) internal successors, (1691), 898 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1691 transitions. [2022-11-02 20:31:59,377 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1691 transitions. Word has length 46 [2022-11-02 20:31:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:59,377 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1691 transitions. [2022-11-02 20:31:59,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1691 transitions. [2022-11-02 20:31:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-02 20:31:59,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:59,380 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] [2022-11-02 20:31:59,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:31:59,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-11-02 20:31:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608816696] [2022-11-02 20:31:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:59,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:59,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608816696] [2022-11-02 20:31:59,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608816696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:59,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:59,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:31:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330113244] [2022-11-02 20:31:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:59,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:31:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:31:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:59,696 INFO L87 Difference]: Start difference. First operand 899 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:59,934 INFO L93 Difference]: Finished difference Result 981 states and 1819 transitions. [2022-11-02 20:32:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-02 20:32:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:00,039 INFO L225 Difference]: With dead ends: 981 [2022-11-02 20:32:00,040 INFO L226 Difference]: Without dead ends: 899 [2022-11-02 20:32:00,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:00,042 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:00,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-11-02 20:32:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-11-02 20:32:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8171683389074693) internal successors, (1630), 898 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1630 transitions. [2022-11-02 20:32:00,085 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1630 transitions. Word has length 46 [2022-11-02 20:32:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:00,085 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1630 transitions. [2022-11-02 20:32:00,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1630 transitions. [2022-11-02 20:32:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:32:00,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:00,088 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] [2022-11-02 20:32:00,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:32:00,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1418201483, now seen corresponding path program 1 times [2022-11-02 20:32:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:00,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673368975] [2022-11-02 20:32:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:00,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673368975] [2022-11-02 20:32:00,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673368975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:00,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:00,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:32:00,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662235318] [2022-11-02 20:32:00,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:00,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:00,387 INFO L87 Difference]: Start difference. First operand 899 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:05,109 INFO L93 Difference]: Finished difference Result 2403 states and 4503 transitions. [2022-11-02 20:32:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:05,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-02 20:32:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:05,117 INFO L225 Difference]: With dead ends: 2403 [2022-11-02 20:32:05,117 INFO L226 Difference]: Without dead ends: 1650 [2022-11-02 20:32:05,120 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 [2022-11-02 20:32:05,122 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 961 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:05,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 619 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 20:32:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-02 20:32:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-11-02 20:32:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.612257281553398) internal successors, (2657), 1649 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2657 transitions. [2022-11-02 20:32:05,205 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2657 transitions. Word has length 48 [2022-11-02 20:32:05,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:05,206 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2657 transitions. [2022-11-02 20:32:05,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2657 transitions. [2022-11-02 20:32:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:05,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:05,222 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] [2022-11-02 20:32:05,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:32:05,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-11-02 20:32:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:05,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938224775] [2022-11-02 20:32:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:05,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:05,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938224775] [2022-11-02 20:32:05,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938224775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:05,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:05,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984889477] [2022-11-02 20:32:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:05,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:05,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:05,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:05,424 INFO L87 Difference]: Start difference. First operand 1650 states and 2657 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:05,465 INFO L93 Difference]: Finished difference Result 1800 states and 2895 transitions. [2022-11-02 20:32:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:05,474 INFO L225 Difference]: With dead ends: 1800 [2022-11-02 20:32:05,474 INFO L226 Difference]: Without dead ends: 1722 [2022-11-02 20:32:05,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:05,477 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:05,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-11-02 20:32:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2022-11-02 20:32:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.6117578579743888) internal successors, (2769), 1719 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2769 transitions. [2022-11-02 20:32:05,576 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2769 transitions. Word has length 106 [2022-11-02 20:32:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:05,577 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2769 transitions. [2022-11-02 20:32:05,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2769 transitions. [2022-11-02 20:32:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:05,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:05,579 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] [2022-11-02 20:32:05,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:32:05,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-11-02 20:32:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804589543] [2022-11-02 20:32:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:05,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804589543] [2022-11-02 20:32:05,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804589543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:05,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:05,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503526447] [2022-11-02 20:32:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:05,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:05,782 INFO L87 Difference]: Start difference. First operand 1720 states and 2769 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:05,831 INFO L93 Difference]: Finished difference Result 2004 states and 3221 transitions. [2022-11-02 20:32:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:05,843 INFO L225 Difference]: With dead ends: 2004 [2022-11-02 20:32:05,843 INFO L226 Difference]: Without dead ends: 1856 [2022-11-02 20:32:05,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:05,853 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:05,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:05,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-11-02 20:32:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1854. [2022-11-02 20:32:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1852 states have (on average 1.6101511879049677) internal successors, (2982), 1853 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2982 transitions. [2022-11-02 20:32:05,907 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2982 transitions. Word has length 106 [2022-11-02 20:32:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:05,911 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 2982 transitions. [2022-11-02 20:32:05,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2982 transitions. [2022-11-02 20:32:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:05,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:05,916 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] [2022-11-02 20:32:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:32:05,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-11-02 20:32:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069413496] [2022-11-02 20:32:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:06,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069413496] [2022-11-02 20:32:06,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069413496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:06,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:06,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421449806] [2022-11-02 20:32:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:06,079 INFO L87 Difference]: Start difference. First operand 1854 states and 2982 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:06,142 INFO L93 Difference]: Finished difference Result 2394 states and 3840 transitions. [2022-11-02 20:32:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:06,155 INFO L225 Difference]: With dead ends: 2394 [2022-11-02 20:32:06,155 INFO L226 Difference]: Without dead ends: 2112 [2022-11-02 20:32:06,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:06,165 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:06,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-11-02 20:32:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2022-11-02 20:32:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2108 states have (on average 1.6062618595825426) internal successors, (3386), 2109 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3386 transitions. [2022-11-02 20:32:06,235 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3386 transitions. Word has length 106 [2022-11-02 20:32:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:06,236 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3386 transitions. [2022-11-02 20:32:06,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3386 transitions. [2022-11-02 20:32:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:06,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:06,239 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] [2022-11-02 20:32:06,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:32:06,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-11-02 20:32:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406649270] [2022-11-02 20:32:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406649270] [2022-11-02 20:32:06,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406649270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:06,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:06,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312418255] [2022-11-02 20:32:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:06,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:06,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:06,403 INFO L87 Difference]: Start difference. First operand 2110 states and 3386 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:06,484 INFO L93 Difference]: Finished difference Result 3138 states and 5012 transitions. [2022-11-02 20:32:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:06,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:06,495 INFO L225 Difference]: With dead ends: 3138 [2022-11-02 20:32:06,495 INFO L226 Difference]: Without dead ends: 2600 [2022-11-02 20:32:06,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:06,500 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:06,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-02 20:32:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2022-11-02 20:32:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2596 states have (on average 1.5986132511556241) internal successors, (4150), 2597 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 4150 transitions. [2022-11-02 20:32:06,609 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 4150 transitions. Word has length 106 [2022-11-02 20:32:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:06,609 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 4150 transitions. [2022-11-02 20:32:06,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 4150 transitions. [2022-11-02 20:32:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:06,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:06,611 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] [2022-11-02 20:32:06,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:32:06,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-11-02 20:32:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:06,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341593855] [2022-11-02 20:32:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:06,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:06,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341593855] [2022-11-02 20:32:06,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341593855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:06,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:06,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990588625] [2022-11-02 20:32:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:06,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:06,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:06,758 INFO L87 Difference]: Start difference. First operand 2598 states and 4150 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:06,890 INFO L93 Difference]: Finished difference Result 4554 states and 7224 transitions. [2022-11-02 20:32:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:06,904 INFO L225 Difference]: With dead ends: 4554 [2022-11-02 20:32:06,904 INFO L226 Difference]: Without dead ends: 3528 [2022-11-02 20:32:06,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:06,908 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:06,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-11-02 20:32:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-11-02 20:32:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3524 states have (on average 1.5862656072644723) internal successors, (5590), 3525 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5590 transitions. [2022-11-02 20:32:07,077 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5590 transitions. Word has length 106 [2022-11-02 20:32:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:07,077 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5590 transitions. [2022-11-02 20:32:07,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5590 transitions. [2022-11-02 20:32:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:07,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:07,079 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] [2022-11-02 20:32:07,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:32:07,080 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-11-02 20:32:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:07,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467376997] [2022-11-02 20:32:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:07,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467376997] [2022-11-02 20:32:07,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467376997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:07,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:07,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496379203] [2022-11-02 20:32:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:07,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:07,186 INFO L87 Difference]: Start difference. First operand 3526 states and 5590 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:07,491 INFO L93 Difference]: Finished difference Result 7242 states and 11384 transitions. [2022-11-02 20:32:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:07,510 INFO L225 Difference]: With dead ends: 7242 [2022-11-02 20:32:07,510 INFO L226 Difference]: Without dead ends: 5288 [2022-11-02 20:32:07,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:07,518 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:07,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2022-11-02 20:32:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5286. [2022-11-02 20:32:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5284 states have (on average 1.5696442089326268) internal successors, (8294), 5285 states have internal predecessors, (8294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8294 transitions. [2022-11-02 20:32:07,825 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8294 transitions. Word has length 106 [2022-11-02 20:32:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:07,826 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 8294 transitions. [2022-11-02 20:32:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8294 transitions. [2022-11-02 20:32:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:07,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:07,828 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] [2022-11-02 20:32:07,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:32:07,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-11-02 20:32:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:07,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996877286] [2022-11-02 20:32:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:07,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:07,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996877286] [2022-11-02 20:32:07,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996877286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:07,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:07,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:07,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123619039] [2022-11-02 20:32:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:07,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:07,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:07,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:07,957 INFO L87 Difference]: Start difference. First operand 5286 states and 8294 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:08,472 INFO L93 Difference]: Finished difference Result 12330 states and 19176 transitions. [2022-11-02 20:32:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:08,501 INFO L225 Difference]: With dead ends: 12330 [2022-11-02 20:32:08,501 INFO L226 Difference]: Without dead ends: 8616 [2022-11-02 20:32:08,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:08,507 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:08,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2022-11-02 20:32:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 8614. [2022-11-02 20:32:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 8612 states have (on average 1.5501625638643752) internal successors, (13350), 8613 states have internal predecessors, (13350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 13350 transitions. [2022-11-02 20:32:09,041 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 13350 transitions. Word has length 106 [2022-11-02 20:32:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:09,042 INFO L495 AbstractCegarLoop]: Abstraction has 8614 states and 13350 transitions. [2022-11-02 20:32:09,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 13350 transitions. [2022-11-02 20:32:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:32:09,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:09,044 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] [2022-11-02 20:32:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:32:09,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:09,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-11-02 20:32:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:09,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240922664] [2022-11-02 20:32:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:09,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:09,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240922664] [2022-11-02 20:32:09,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240922664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:09,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:09,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:32:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361279349] [2022-11-02 20:32:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:09,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:32:09,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:32:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:32:09,386 INFO L87 Difference]: Start difference. First operand 8614 states and 13350 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:16,233 INFO L93 Difference]: Finished difference Result 121286 states and 186422 transitions. [2022-11-02 20:32:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:32:16,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-02 20:32:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:16,544 INFO L225 Difference]: With dead ends: 121286 [2022-11-02 20:32:16,544 INFO L226 Difference]: Without dead ends: 114244 [2022-11-02 20:32:16,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:32:16,583 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:16,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:32:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114244 states. [2022-11-02 20:32:19,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114244 to 15654. [2022-11-02 20:32:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15654 states, 15652 states have (on average 1.527600306670074) internal successors, (23910), 15653 states have internal predecessors, (23910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15654 states to 15654 states and 23910 transitions. [2022-11-02 20:32:19,774 INFO L78 Accepts]: Start accepts. Automaton has 15654 states and 23910 transitions. Word has length 106 [2022-11-02 20:32:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:19,775 INFO L495 AbstractCegarLoop]: Abstraction has 15654 states and 23910 transitions. [2022-11-02 20:32:19,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 15654 states and 23910 transitions. [2022-11-02 20:32:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 20:32:19,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:19,778 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] [2022-11-02 20:32:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:32:19,778 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-11-02 20:32:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:19,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622446288] [2022-11-02 20:32:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:19,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:19,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622446288] [2022-11-02 20:32:19,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622446288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:19,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:19,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053588320] [2022-11-02 20:32:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:19,939 INFO L87 Difference]: Start difference. First operand 15654 states and 23910 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:22,882 INFO L93 Difference]: Finished difference Result 42410 states and 64232 transitions. [2022-11-02 20:32:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-11-02 20:32:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:22,932 INFO L225 Difference]: With dead ends: 42410 [2022-11-02 20:32:22,932 INFO L226 Difference]: Without dead ends: 28328 [2022-11-02 20:32:22,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:22,946 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:22,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28328 states. [2022-11-02 20:32:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28328 to 28070. [2022-11-02 20:32:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4948696023941856) internal successors, (41958), 28069 states have internal predecessors, (41958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41958 transitions. [2022-11-02 20:32:25,961 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41958 transitions. Word has length 108 [2022-11-02 20:32:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:25,962 INFO L495 AbstractCegarLoop]: Abstraction has 28070 states and 41958 transitions. [2022-11-02 20:32:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41958 transitions. [2022-11-02 20:32:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 20:32:25,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:25,965 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] [2022-11-02 20:32:25,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:32:25,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-11-02 20:32:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:25,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025071607] [2022-11-02 20:32:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:26,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025071607] [2022-11-02 20:32:26,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025071607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:26,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:26,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:32:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519893204] [2022-11-02 20:32:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:32:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:32:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:32:26,597 INFO L87 Difference]: Start difference. First operand 28070 states and 41958 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:30,276 INFO L93 Difference]: Finished difference Result 54570 states and 81384 transitions. [2022-11-02 20:32:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:32:30,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-11-02 20:32:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:30,315 INFO L225 Difference]: With dead ends: 54570 [2022-11-02 20:32:30,315 INFO L226 Difference]: Without dead ends: 28072 [2022-11-02 20:32:30,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:32:30,337 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 3608 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:30,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 2473 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28072 states. [2022-11-02 20:32:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28072 to 28070. [2022-11-02 20:32:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4857488955394043) internal successors, (41702), 28069 states have internal predecessors, (41702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41702 transitions. [2022-11-02 20:32:33,438 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41702 transitions. Word has length 108 [2022-11-02 20:32:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:33,439 INFO L495 AbstractCegarLoop]: Abstraction has 28070 states and 41702 transitions. [2022-11-02 20:32:33,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41702 transitions. [2022-11-02 20:32:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:32:33,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:33,441 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] [2022-11-02 20:32:33,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:32:33,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:33,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-11-02 20:32:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:33,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359929091] [2022-11-02 20:32:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:33,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359929091] [2022-11-02 20:32:33,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359929091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:33,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:33,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:33,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433022587] [2022-11-02 20:32:33,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:33,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:32:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:32:33,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:32:33,625 INFO L87 Difference]: Start difference. First operand 28070 states and 41702 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:37,208 INFO L93 Difference]: Finished difference Result 54568 states and 80871 transitions. [2022-11-02 20:32:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:32:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-11-02 20:32:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:37,238 INFO L225 Difference]: With dead ends: 54568 [2022-11-02 20:32:37,238 INFO L226 Difference]: Without dead ends: 28070 [2022-11-02 20:32:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:32:37,261 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:37,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28070 states. [2022-11-02 20:32:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28070 to 28070. [2022-11-02 20:32:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.476628188684623) internal successors, (41446), 28069 states have internal predecessors, (41446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41446 transitions. [2022-11-02 20:32:40,249 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41446 transitions. Word has length 109 [2022-11-02 20:32:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:40,250 INFO L495 AbstractCegarLoop]: Abstraction has 28070 states and 41446 transitions. [2022-11-02 20:32:40,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41446 transitions. [2022-11-02 20:32:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:32:40,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:40,252 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] [2022-11-02 20:32:40,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:32:40,252 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:40,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-11-02 20:32:40,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:40,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645100041] [2022-11-02 20:32:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:40,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:40,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:40,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645100041] [2022-11-02 20:32:40,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645100041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:40,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:40,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501436654] [2022-11-02 20:32:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:40,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:40,514 INFO L87 Difference]: Start difference. First operand 28070 states and 41446 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:45,725 INFO L93 Difference]: Finished difference Result 47696 states and 69915 transitions. [2022-11-02 20:32:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:45,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-11-02 20:32:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:45,798 INFO L225 Difference]: With dead ends: 47696 [2022-11-02 20:32:45,798 INFO L226 Difference]: Without dead ends: 47694 [2022-11-02 20:32:45,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:45,811 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:45,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2022-11-02 20:32:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 28838. [2022-11-02 20:32:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28838 states, 28836 states have (on average 1.4594950755999445) internal successors, (42086), 28837 states have internal predecessors, (42086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28838 states to 28838 states and 42086 transitions. [2022-11-02 20:32:49,180 INFO L78 Accepts]: Start accepts. Automaton has 28838 states and 42086 transitions. Word has length 109 [2022-11-02 20:32:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:49,180 INFO L495 AbstractCegarLoop]: Abstraction has 28838 states and 42086 transitions. [2022-11-02 20:32:49,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 28838 states and 42086 transitions. [2022-11-02 20:32:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:32:49,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:49,183 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] [2022-11-02 20:32:49,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:32:49,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-11-02 20:32:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:49,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199762315] [2022-11-02 20:32:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:49,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:49,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199762315] [2022-11-02 20:32:49,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199762315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:49,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:49,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962217357] [2022-11-02 20:32:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:49,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:49,277 INFO L87 Difference]: Start difference. First operand 28838 states and 42086 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:53,993 INFO L93 Difference]: Finished difference Result 56493 states and 82540 transitions. [2022-11-02 20:32:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:53,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-02 20:32:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:54,042 INFO L225 Difference]: With dead ends: 56493 [2022-11-02 20:32:54,042 INFO L226 Difference]: Without dead ends: 41642 [2022-11-02 20:32:54,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:54,059 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:54,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states.