./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8 --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 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 --- 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-2329fc7 [2022-12-13 10:57:10,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:57:10,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:57:10,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:57:10,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:57:10,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:57:10,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:57:10,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:57:10,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:57:10,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:57:10,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:57:10,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:57:10,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:57:10,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:57:11,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:57:11,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:57:11,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:57:11,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:57:11,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:57:11,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:57:11,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:57:11,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:57:11,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:57:11,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:57:11,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:57:11,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:57:11,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:57:11,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:57:11,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:57:11,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:57:11,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:57:11,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:57:11,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:57:11,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:57:11,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:57:11,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:57:11,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:57:11,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:57:11,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:57:11,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:57:11,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:57:11,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 10:57:11,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:57:11,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:57:11,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:57:11,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:57:11,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:57:11,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:57:11,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:57:11,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:57:11,045 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:57:11,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:57:11,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:57:11,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:57:11,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:57:11,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:57:11,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:57:11,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:57:11,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:57:11,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:57:11,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:57:11,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:57:11,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:57:11,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:57:11,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:57:11,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:57:11,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:57:11,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:57:11,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:57:11,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:57:11,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:57:11,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:57:11,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:57:11,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:57:11,049 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:57:11,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:57:11,049 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:57:11,049 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 [2022-12-13 10:57:11,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:57:11,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:57:11,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:57:11,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:57:11,256 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:57:11,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 10:57:13,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:57:13,959 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:57:13,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 10:57:13,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/data/cafde18c4/6053462d1db749b89bfd20e53abbadec/FLAGbecc74b41 [2022-12-13 10:57:14,366 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/data/cafde18c4/6053462d1db749b89bfd20e53abbadec [2022-12-13 10:57:14,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:57:14,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:57:14,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:57:14,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:57:14,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:57:14,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd34918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14, skipping insertion in model container [2022-12-13 10:57:14,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:57:14,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:57:14,538 WARN L237 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_cb4ce7e0-055f-40c2-8845-cde96fca42e7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-12-13 10:57:14,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:57:14,570 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:57:14,601 WARN L237 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_cb4ce7e0-055f-40c2-8845-cde96fca42e7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-12-13 10:57:14,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:57:14,630 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:57:14,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14 WrapperNode [2022-12-13 10:57:14,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:57:14,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:57:14,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:57:14,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:57:14,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,665 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 556 [2022-12-13 10:57:14,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:57:14,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:57:14,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:57:14,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:57:14,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:57:14,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:57:14,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:57:14,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:57:14,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (1/1) ... [2022-12-13 10:57:14,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:57:14,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:57:14,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:57:14,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:57:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:57:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:57:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:57:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:57:14,846 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:57:14,848 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:57:15,287 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:57:15,296 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:57:15,296 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 10:57:15,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:57:15 BoogieIcfgContainer [2022-12-13 10:57:15,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:57:15,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:57:15,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:57:15,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:57:15,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:57:14" (1/3) ... [2022-12-13 10:57:15,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85f75ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:57:15, skipping insertion in model container [2022-12-13 10:57:15,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:14" (2/3) ... [2022-12-13 10:57:15,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85f75ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:57:15, skipping insertion in model container [2022-12-13 10:57:15,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:57:15" (3/3) ... [2022-12-13 10:57:15,308 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 10:57:15,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:57:15,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 10:57:15,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:57:15,386 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;@76d6429f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:57:15,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 10:57:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 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) [2022-12-13 10:57:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 10:57:15,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:15,397 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] [2022-12-13 10:57:15,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -235222256, now seen corresponding path program 1 times [2022-12-13 10:57:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:15,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230757275] [2022-12-13 10:57:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230757275] [2022-12-13 10:57:15,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230757275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:15,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:15,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853314903] [2022-12-13 10:57:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:15,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:15,746 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 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 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-12-13 10:57:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:15,897 INFO L93 Difference]: Finished difference Result 467 states and 755 transitions. [2022-12-13 10:57:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 [2022-12-13 10:57:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:15,907 INFO L225 Difference]: With dead ends: 467 [2022-12-13 10:57:15,908 INFO L226 Difference]: Without dead ends: 393 [2022-12-13 10:57:15,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:15,912 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 824 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:15,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 865 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:57:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-12-13 10:57:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 231. [2022-12-13 10:57:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.508695652173913) internal successors, (347), 230 states have internal predecessors, (347), 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) [2022-12-13 10:57:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 347 transitions. [2022-12-13 10:57:15,972 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 347 transitions. Word has length 48 [2022-12-13 10:57:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:15,972 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 347 transitions. [2022-12-13 10:57:15,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-12-13 10:57:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 347 transitions. [2022-12-13 10:57:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 10:57:15,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:15,974 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] [2022-12-13 10:57:15,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:57:15,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 407331856, now seen corresponding path program 1 times [2022-12-13 10:57:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279705212] [2022-12-13 10:57:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:16,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:16,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279705212] [2022-12-13 10:57:16,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279705212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:16,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:16,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077109307] [2022-12-13 10:57:16,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:16,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:16,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:16,049 INFO L87 Difference]: Start difference. First operand 231 states and 347 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 10:57:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:16,107 INFO L93 Difference]: Finished difference Result 569 states and 875 transitions. [2022-12-13 10:57:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:16,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-12-13 10:57:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:16,109 INFO L225 Difference]: With dead ends: 569 [2022-12-13 10:57:16,109 INFO L226 Difference]: Without dead ends: 401 [2022-12-13 10:57:16,109 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 [2022-12-13 10:57:16,110 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 143 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:16,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-12-13 10:57:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2022-12-13 10:57:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.5125628140703518) internal successors, (602), 398 states have internal predecessors, (602), 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) [2022-12-13 10:57:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2022-12-13 10:57:16,141 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 51 [2022-12-13 10:57:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:16,141 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2022-12-13 10:57:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 10:57:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2022-12-13 10:57:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 10:57:16,142 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:16,143 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] [2022-12-13 10:57:16,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:57:16,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash 738781713, now seen corresponding path program 1 times [2022-12-13 10:57:16,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:16,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808736823] [2022-12-13 10:57:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:16,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:16,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808736823] [2022-12-13 10:57:16,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808736823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:16,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:16,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432761916] [2022-12-13 10:57:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:16,197 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 10:57:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:16,263 INFO L93 Difference]: Finished difference Result 979 states and 1498 transitions. [2022-12-13 10:57:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-12-13 10:57:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:16,265 INFO L225 Difference]: With dead ends: 979 [2022-12-13 10:57:16,265 INFO L226 Difference]: Without dead ends: 691 [2022-12-13 10:57:16,266 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 [2022-12-13 10:57:16,267 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 130 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:16,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-12-13 10:57:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2022-12-13 10:57:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.502906976744186) internal successors, (1034), 688 states have internal predecessors, (1034), 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) [2022-12-13 10:57:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1034 transitions. [2022-12-13 10:57:16,310 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1034 transitions. Word has length 51 [2022-12-13 10:57:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:16,311 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1034 transitions. [2022-12-13 10:57:16,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 10:57:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1034 transitions. [2022-12-13 10:57:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 10:57:16,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:16,312 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] [2022-12-13 10:57:16,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:57:16,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash -865520847, now seen corresponding path program 1 times [2022-12-13 10:57:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:16,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788534273] [2022-12-13 10:57:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:16,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:16,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788534273] [2022-12-13 10:57:16,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788534273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:16,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:16,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:16,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860829601] [2022-12-13 10:57:16,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:16,358 INFO L87 Difference]: Start difference. First operand 689 states and 1034 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 10:57:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:16,477 INFO L93 Difference]: Finished difference Result 1811 states and 2729 transitions. [2022-12-13 10:57:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-12-13 10:57:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:16,480 INFO L225 Difference]: With dead ends: 1811 [2022-12-13 10:57:16,480 INFO L226 Difference]: Without dead ends: 1209 [2022-12-13 10:57:16,481 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 [2022-12-13 10:57:16,482 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:16,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 400 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-12-13 10:57:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1207. [2022-12-13 10:57:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.466832504145937) internal successors, (1769), 1206 states have internal predecessors, (1769), 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) [2022-12-13 10:57:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1769 transitions. [2022-12-13 10:57:16,548 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1769 transitions. Word has length 51 [2022-12-13 10:57:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:16,549 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1769 transitions. [2022-12-13 10:57:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-12-13 10:57:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1769 transitions. [2022-12-13 10:57:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 10:57:16,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:16,550 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] [2022-12-13 10:57:16,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:57:16,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1376619607, now seen corresponding path program 1 times [2022-12-13 10:57:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:16,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158377663] [2022-12-13 10:57:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:16,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:16,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158377663] [2022-12-13 10:57:16,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158377663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:16,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:16,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46448723] [2022-12-13 10:57:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:16,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:16,636 INFO L87 Difference]: Start difference. First operand 1207 states and 1769 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2022-12-13 10:57:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:16,816 INFO L93 Difference]: Finished difference Result 2347 states and 3506 transitions. [2022-12-13 10:57:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2022-12-13 10:57:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:16,821 INFO L225 Difference]: With dead ends: 2347 [2022-12-13 10:57:16,821 INFO L226 Difference]: Without dead ends: 2001 [2022-12-13 10:57:16,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:16,823 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 562 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:16,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 894 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-12-13 10:57:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1611. [2022-12-13 10:57:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 1.4745341614906833) internal successors, (2374), 1610 states have internal predecessors, (2374), 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) [2022-12-13 10:57:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2374 transitions. [2022-12-13 10:57:16,915 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2374 transitions. Word has length 52 [2022-12-13 10:57:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:16,915 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2374 transitions. [2022-12-13 10:57:16,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2022-12-13 10:57:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2374 transitions. [2022-12-13 10:57:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 10:57:16,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:16,916 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] [2022-12-13 10:57:16,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:57:16,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1542318405, now seen corresponding path program 1 times [2022-12-13 10:57:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:16,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979084197] [2022-12-13 10:57:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:16,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:16,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979084197] [2022-12-13 10:57:16,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979084197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:16,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:16,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:16,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757458476] [2022-12-13 10:57:16,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:16,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:16,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:16,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:16,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:16,995 INFO L87 Difference]: Start difference. First operand 1611 states and 2374 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2022-12-13 10:57:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:17,213 INFO L93 Difference]: Finished difference Result 2721 states and 4066 transitions. [2022-12-13 10:57:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2022-12-13 10:57:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:17,220 INFO L225 Difference]: With dead ends: 2721 [2022-12-13 10:57:17,220 INFO L226 Difference]: Without dead ends: 2375 [2022-12-13 10:57:17,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:17,222 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 566 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:17,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 928 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:57:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-12-13 10:57:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1921. [2022-12-13 10:57:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 1.4802083333333333) internal successors, (2842), 1920 states have internal predecessors, (2842), 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) [2022-12-13 10:57:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2842 transitions. [2022-12-13 10:57:17,322 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2842 transitions. Word has length 52 [2022-12-13 10:57:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:17,323 INFO L495 AbstractCegarLoop]: Abstraction has 1921 states and 2842 transitions. [2022-12-13 10:57:17,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2022-12-13 10:57:17,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2842 transitions. [2022-12-13 10:57:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 10:57:17,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:17,324 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] [2022-12-13 10:57:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:57:17,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1268142435, now seen corresponding path program 1 times [2022-12-13 10:57:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:17,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028336408] [2022-12-13 10:57:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:17,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:17,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:17,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028336408] [2022-12-13 10:57:17,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028336408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:17,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:17,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708762229] [2022-12-13 10:57:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:17,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:17,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:17,394 INFO L87 Difference]: Start difference. First operand 1921 states and 2842 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-12-13 10:57:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:17,628 INFO L93 Difference]: Finished difference Result 3135 states and 4687 transitions. [2022-12-13 10:57:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2022-12-13 10:57:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:17,634 INFO L225 Difference]: With dead ends: 3135 [2022-12-13 10:57:17,635 INFO L226 Difference]: Without dead ends: 2789 [2022-12-13 10:57:17,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:17,636 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 570 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:17,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1003 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:57:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-12-13 10:57:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2216. [2022-12-13 10:57:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2215 states have (on average 1.4853273137697518) internal successors, (3290), 2215 states have internal predecessors, (3290), 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) [2022-12-13 10:57:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3290 transitions. [2022-12-13 10:57:17,745 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3290 transitions. Word has length 53 [2022-12-13 10:57:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:17,745 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 3290 transitions. [2022-12-13 10:57:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-12-13 10:57:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3290 transitions. [2022-12-13 10:57:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 10:57:17,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:17,746 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] [2022-12-13 10:57:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:57:17,746 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1868949312, now seen corresponding path program 1 times [2022-12-13 10:57:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:17,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7873737] [2022-12-13 10:57:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:17,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7873737] [2022-12-13 10:57:17,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7873737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:17,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:17,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148871885] [2022-12-13 10:57:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:17,815 INFO L87 Difference]: Start difference. First operand 2216 states and 3290 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2022-12-13 10:57:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:18,124 INFO L93 Difference]: Finished difference Result 5194 states and 7716 transitions. [2022-12-13 10:57:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2022-12-13 10:57:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:18,130 INFO L225 Difference]: With dead ends: 5194 [2022-12-13 10:57:18,131 INFO L226 Difference]: Without dead ends: 3055 [2022-12-13 10:57:18,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:18,133 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 774 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:18,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 213 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:57:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-12-13 10:57:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3037. [2022-12-13 10:57:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.4720026350461133) internal successors, (4469), 3036 states have internal predecessors, (4469), 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) [2022-12-13 10:57:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4469 transitions. [2022-12-13 10:57:18,335 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4469 transitions. Word has length 56 [2022-12-13 10:57:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:18,336 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 4469 transitions. [2022-12-13 10:57:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2022-12-13 10:57:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4469 transitions. [2022-12-13 10:57:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 10:57:18,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:18,337 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] [2022-12-13 10:57:18,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:57:18,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash -281542782, now seen corresponding path program 1 times [2022-12-13 10:57:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:18,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047608811] [2022-12-13 10:57:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:18,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047608811] [2022-12-13 10:57:18,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047608811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:18,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:18,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552904460] [2022-12-13 10:57:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:18,396 INFO L87 Difference]: Start difference. First operand 3037 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-12-13 10:57:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:18,815 INFO L93 Difference]: Finished difference Result 7096 states and 10425 transitions. [2022-12-13 10:57:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:18,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2022-12-13 10:57:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:18,823 INFO L225 Difference]: With dead ends: 7096 [2022-12-13 10:57:18,823 INFO L226 Difference]: Without dead ends: 4145 [2022-12-13 10:57:18,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:18,826 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 806 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:18,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 201 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:57:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-12-13 10:57:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3037. [2022-12-13 10:57:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.4555335968379446) internal successors, (4419), 3036 states have internal predecessors, (4419), 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) [2022-12-13 10:57:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4419 transitions. [2022-12-13 10:57:19,117 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4419 transitions. Word has length 57 [2022-12-13 10:57:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:19,117 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 4419 transitions. [2022-12-13 10:57:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-12-13 10:57:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4419 transitions. [2022-12-13 10:57:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 10:57:19,119 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:19,119 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] [2022-12-13 10:57:19,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 10:57:19,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1520651092, now seen corresponding path program 1 times [2022-12-13 10:57:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344198230] [2022-12-13 10:57:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:19,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344198230] [2022-12-13 10:57:19,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344198230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:19,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:19,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356544990] [2022-12-13 10:57:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:19,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:19,190 INFO L87 Difference]: Start difference. First operand 3037 states and 4419 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-12-13 10:57:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:19,621 INFO L93 Difference]: Finished difference Result 7242 states and 10532 transitions. [2022-12-13 10:57:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:19,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2022-12-13 10:57:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:19,629 INFO L225 Difference]: With dead ends: 7242 [2022-12-13 10:57:19,629 INFO L226 Difference]: Without dead ends: 4246 [2022-12-13 10:57:19,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:19,632 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 783 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:19,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 211 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 10:57:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-12-13 10:57:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 4221. [2022-12-13 10:57:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4221 states, 4220 states have (on average 1.4417061611374407) internal successors, (6084), 4220 states have internal predecessors, (6084), 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) [2022-12-13 10:57:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 6084 transitions. [2022-12-13 10:57:20,035 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 6084 transitions. Word has length 57 [2022-12-13 10:57:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:20,035 INFO L495 AbstractCegarLoop]: Abstraction has 4221 states and 6084 transitions. [2022-12-13 10:57:20,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-12-13 10:57:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 6084 transitions. [2022-12-13 10:57:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 10:57:20,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:20,039 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] [2022-12-13 10:57:20,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 10:57:20,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1438328999, now seen corresponding path program 1 times [2022-12-13 10:57:20,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:20,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122119508] [2022-12-13 10:57:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:20,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122119508] [2022-12-13 10:57:20,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122119508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:20,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:20,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:57:20,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9339044] [2022-12-13 10:57:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:20,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:20,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:20,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:20,141 INFO L87 Difference]: Start difference. First operand 4221 states and 6084 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:21,911 INFO L93 Difference]: Finished difference Result 17865 states and 25675 transitions. [2022-12-13 10:57:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:57:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-13 10:57:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:21,938 INFO L225 Difference]: With dead ends: 17865 [2022-12-13 10:57:21,938 INFO L226 Difference]: Without dead ends: 16495 [2022-12-13 10:57:21,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 10:57:21,941 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 2547 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:21,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 391 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 10:57:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16495 states. [2022-12-13 10:57:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16495 to 4233. [2022-12-13 10:57:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4233 states, 4232 states have (on average 1.4413988657844992) internal successors, (6100), 4232 states have internal predecessors, (6100), 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) [2022-12-13 10:57:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 6100 transitions. [2022-12-13 10:57:22,397 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 6100 transitions. Word has length 58 [2022-12-13 10:57:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:22,397 INFO L495 AbstractCegarLoop]: Abstraction has 4233 states and 6100 transitions. [2022-12-13 10:57:22,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 6100 transitions. [2022-12-13 10:57:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 10:57:22,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:22,399 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] [2022-12-13 10:57:22,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 10:57:22,399 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:22,400 INFO L85 PathProgramCache]: Analyzing trace with hash -497478917, now seen corresponding path program 1 times [2022-12-13 10:57:22,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:22,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128484493] [2022-12-13 10:57:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:22,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:22,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128484493] [2022-12-13 10:57:22,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128484493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:22,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:22,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:57:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166331649] [2022-12-13 10:57:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:22,477 INFO L87 Difference]: Start difference. First operand 4233 states and 6100 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-12-13 10:57:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:24,546 INFO L93 Difference]: Finished difference Result 16288 states and 23327 transitions. [2022-12-13 10:57:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:57:24,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-12-13 10:57:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:24,566 INFO L225 Difference]: With dead ends: 16288 [2022-12-13 10:57:24,566 INFO L226 Difference]: Without dead ends: 14074 [2022-12-13 10:57:24,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 10:57:24,569 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1908 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:24,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 333 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 10:57:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2022-12-13 10:57:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 4253. [2022-12-13 10:57:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 1.440263405456256) internal successors, (6124), 4252 states have internal predecessors, (6124), 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) [2022-12-13 10:57:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6124 transitions. [2022-12-13 10:57:25,220 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6124 transitions. Word has length 59 [2022-12-13 10:57:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:25,220 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 6124 transitions. [2022-12-13 10:57:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-12-13 10:57:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6124 transitions. [2022-12-13 10:57:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 10:57:25,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:25,221 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] [2022-12-13 10:57:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 10:57:25,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2094347044, now seen corresponding path program 1 times [2022-12-13 10:57:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614368124] [2022-12-13 10:57:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614368124] [2022-12-13 10:57:25,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614368124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:25,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:25,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:57:25,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052222190] [2022-12-13 10:57:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:25,293 INFO L87 Difference]: Start difference. First operand 4253 states and 6124 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-12-13 10:57:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:28,190 INFO L93 Difference]: Finished difference Result 19117 states and 27394 transitions. [2022-12-13 10:57:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 10:57:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-12-13 10:57:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:28,209 INFO L225 Difference]: With dead ends: 19117 [2022-12-13 10:57:28,209 INFO L226 Difference]: Without dead ends: 17075 [2022-12-13 10:57:28,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 10:57:28,213 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2147 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:28,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 373 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 10:57:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2022-12-13 10:57:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 4331. [2022-12-13 10:57:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.4374133949191685) internal successors, (6224), 4330 states have internal predecessors, (6224), 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) [2022-12-13 10:57:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6224 transitions. [2022-12-13 10:57:28,903 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6224 transitions. Word has length 59 [2022-12-13 10:57:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:28,903 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6224 transitions. [2022-12-13 10:57:28,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-12-13 10:57:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6224 transitions. [2022-12-13 10:57:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 10:57:28,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:28,905 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] [2022-12-13 10:57:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 10:57:28,905 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash 740296785, now seen corresponding path program 1 times [2022-12-13 10:57:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:28,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369839089] [2022-12-13 10:57:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369839089] [2022-12-13 10:57:29,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369839089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:29,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:29,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:57:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215526630] [2022-12-13 10:57:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 10:57:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 10:57:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 10:57:29,123 INFO L87 Difference]: Start difference. First operand 4331 states and 6224 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:32,257 INFO L93 Difference]: Finished difference Result 14786 states and 21200 transitions. [2022-12-13 10:57:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 10:57:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 10:57:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:32,268 INFO L225 Difference]: With dead ends: 14786 [2022-12-13 10:57:32,268 INFO L226 Difference]: Without dead ends: 11209 [2022-12-13 10:57:32,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-12-13 10:57:32,271 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 2090 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:32,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1116 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 10:57:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2022-12-13 10:57:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 4331. [2022-12-13 10:57:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.4360277136258661) internal successors, (6218), 4330 states have internal predecessors, (6218), 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) [2022-12-13 10:57:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6218 transitions. [2022-12-13 10:57:33,089 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6218 transitions. Word has length 61 [2022-12-13 10:57:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:33,089 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6218 transitions. [2022-12-13 10:57:33,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6218 transitions. [2022-12-13 10:57:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 10:57:33,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:33,091 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] [2022-12-13 10:57:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 10:57:33,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1120228239, now seen corresponding path program 1 times [2022-12-13 10:57:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:33,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923317522] [2022-12-13 10:57:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923317522] [2022-12-13 10:57:33,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923317522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:33,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:33,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:57:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842663217] [2022-12-13 10:57:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 10:57:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 10:57:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 10:57:33,268 INFO L87 Difference]: Start difference. First operand 4331 states and 6218 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:36,345 INFO L93 Difference]: Finished difference Result 14337 states and 20585 transitions. [2022-12-13 10:57:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 10:57:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 10:57:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:36,354 INFO L225 Difference]: With dead ends: 14337 [2022-12-13 10:57:36,354 INFO L226 Difference]: Without dead ends: 10893 [2022-12-13 10:57:36,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-12-13 10:57:36,358 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 2146 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:36,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 1095 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 10:57:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2022-12-13 10:57:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 4249. [2022-12-13 10:57:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.4324387947269304) internal successors, (6085), 4248 states have internal predecessors, (6085), 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) [2022-12-13 10:57:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6085 transitions. [2022-12-13 10:57:37,286 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6085 transitions. Word has length 61 [2022-12-13 10:57:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:37,286 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 6085 transitions. [2022-12-13 10:57:37,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6085 transitions. [2022-12-13 10:57:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 10:57:37,287 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:37,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:37,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 10:57:37,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:37,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1451678096, now seen corresponding path program 1 times [2022-12-13 10:57:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:37,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401948308] [2022-12-13 10:57:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:37,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401948308] [2022-12-13 10:57:37,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401948308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:37,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:37,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 10:57:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271237599] [2022-12-13 10:57:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:37,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 10:57:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 10:57:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 10:57:37,518 INFO L87 Difference]: Start difference. First operand 4249 states and 6085 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:41,503 INFO L93 Difference]: Finished difference Result 14864 states and 21312 transitions. [2022-12-13 10:57:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 10:57:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 10:57:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:41,513 INFO L225 Difference]: With dead ends: 14864 [2022-12-13 10:57:41,513 INFO L226 Difference]: Without dead ends: 11292 [2022-12-13 10:57:41,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-12-13 10:57:41,516 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1585 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:41,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1587 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 10:57:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2022-12-13 10:57:42,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 4074. [2022-12-13 10:57:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 1.4286766511171127) internal successors, (5819), 4073 states have internal predecessors, (5819), 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) [2022-12-13 10:57:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 5819 transitions. [2022-12-13 10:57:42,563 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 5819 transitions. Word has length 61 [2022-12-13 10:57:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:42,564 INFO L495 AbstractCegarLoop]: Abstraction has 4074 states and 5819 transitions. [2022-12-13 10:57:42,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 5819 transitions. [2022-12-13 10:57:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 10:57:42,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:42,565 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] [2022-12-13 10:57:42,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 10:57:42,565 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash 218587336, now seen corresponding path program 1 times [2022-12-13 10:57:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:42,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510067149] [2022-12-13 10:57:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:42,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:42,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510067149] [2022-12-13 10:57:42,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510067149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:42,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:42,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467300436] [2022-12-13 10:57:42,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:42,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:42,596 INFO L87 Difference]: Start difference. First operand 4074 states and 5819 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:43,638 INFO L93 Difference]: Finished difference Result 6080 states and 8710 transitions. [2022-12-13 10:57:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:43,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 10:57:43,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:43,642 INFO L225 Difference]: With dead ends: 6080 [2022-12-13 10:57:43,642 INFO L226 Difference]: Without dead ends: 3967 [2022-12-13 10:57:43,643 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 [2022-12-13 10:57:43,644 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 132 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:43,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 476 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-12-13 10:57:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3965. [2022-12-13 10:57:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3964 states have (on average 1.4129667003027244) internal successors, (5601), 3964 states have internal predecessors, (5601), 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) [2022-12-13 10:57:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5601 transitions. [2022-12-13 10:57:44,638 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5601 transitions. Word has length 62 [2022-12-13 10:57:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:44,638 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5601 transitions. [2022-12-13 10:57:44,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5601 transitions. [2022-12-13 10:57:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 10:57:44,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:44,640 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] [2022-12-13 10:57:44,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 10:57:44,640 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1004137309, now seen corresponding path program 1 times [2022-12-13 10:57:44,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:44,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473093316] [2022-12-13 10:57:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:44,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:44,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473093316] [2022-12-13 10:57:44,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473093316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:44,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:44,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:44,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509843810] [2022-12-13 10:57:44,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:44,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:44,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:44,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:44,668 INFO L87 Difference]: Start difference. First operand 3965 states and 5601 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:45,574 INFO L93 Difference]: Finished difference Result 5467 states and 7722 transitions. [2022-12-13 10:57:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:45,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 10:57:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:45,578 INFO L225 Difference]: With dead ends: 5467 [2022-12-13 10:57:45,578 INFO L226 Difference]: Without dead ends: 3372 [2022-12-13 10:57:45,579 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 [2022-12-13 10:57:45,579 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 120 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:45,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 465 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2022-12-13 10:57:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3370. [2022-12-13 10:57:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 3369 states have (on average 1.3864648263579697) internal successors, (4671), 3369 states have internal predecessors, (4671), 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) [2022-12-13 10:57:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4671 transitions. [2022-12-13 10:57:46,423 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4671 transitions. Word has length 62 [2022-12-13 10:57:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:46,424 INFO L495 AbstractCegarLoop]: Abstraction has 3370 states and 4671 transitions. [2022-12-13 10:57:46,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4671 transitions. [2022-12-13 10:57:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 10:57:46,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:46,425 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] [2022-12-13 10:57:46,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 10:57:46,425 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash -17959571, now seen corresponding path program 1 times [2022-12-13 10:57:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:46,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247558482] [2022-12-13 10:57:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:46,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247558482] [2022-12-13 10:57:46,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247558482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:46,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:46,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069395952] [2022-12-13 10:57:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:46,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:57:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:57:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:57:46,455 INFO L87 Difference]: Start difference. First operand 3370 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:47,198 INFO L93 Difference]: Finished difference Result 4119 states and 5686 transitions. [2022-12-13 10:57:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:47,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 10:57:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:47,201 INFO L225 Difference]: With dead ends: 4119 [2022-12-13 10:57:47,201 INFO L226 Difference]: Without dead ends: 2782 [2022-12-13 10:57:47,203 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 [2022-12-13 10:57:47,203 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 150 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:47,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 481 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2022-12-13 10:57:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2780. [2022-12-13 10:57:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2779 states have (on average 1.3537243612810363) internal successors, (3762), 2779 states have internal predecessors, (3762), 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) [2022-12-13 10:57:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3762 transitions. [2022-12-13 10:57:47,879 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3762 transitions. Word has length 62 [2022-12-13 10:57:47,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:47,879 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3762 transitions. [2022-12-13 10:57:47,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3762 transitions. [2022-12-13 10:57:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 10:57:47,880 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:47,880 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] [2022-12-13 10:57:47,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 10:57:47,881 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:47,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash -467159905, now seen corresponding path program 1 times [2022-12-13 10:57:47,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:47,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963744126] [2022-12-13 10:57:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:47,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:48,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963744126] [2022-12-13 10:57:48,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963744126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:48,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:48,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 10:57:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091268306] [2022-12-13 10:57:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 10:57:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 10:57:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 10:57:48,303 INFO L87 Difference]: Start difference. First operand 2780 states and 3762 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:52,190 INFO L93 Difference]: Finished difference Result 8466 states and 11629 transitions. [2022-12-13 10:57:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 10:57:52,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-12-13 10:57:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:52,197 INFO L225 Difference]: With dead ends: 8466 [2022-12-13 10:57:52,197 INFO L226 Difference]: Without dead ends: 8078 [2022-12-13 10:57:52,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2022-12-13 10:57:52,199 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2821 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2821 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:52,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2821 Valid, 2649 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 10:57:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2022-12-13 10:57:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 2691. [2022-12-13 10:57:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.3535315985130112) internal successors, (3641), 2690 states have internal predecessors, (3641), 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) [2022-12-13 10:57:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3641 transitions. [2022-12-13 10:57:53,067 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3641 transitions. Word has length 63 [2022-12-13 10:57:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:53,068 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 3641 transitions. [2022-12-13 10:57:53,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3641 transitions. [2022-12-13 10:57:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 10:57:53,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:53,069 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] [2022-12-13 10:57:53,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 10:57:53,069 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:53,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1791049563, now seen corresponding path program 1 times [2022-12-13 10:57:53,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:53,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471744027] [2022-12-13 10:57:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:53,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:53,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471744027] [2022-12-13 10:57:53,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471744027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:53,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:53,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 10:57:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252877036] [2022-12-13 10:57:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 10:57:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:53,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 10:57:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 10:57:53,452 INFO L87 Difference]: Start difference. First operand 2691 states and 3641 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:57,152 INFO L93 Difference]: Finished difference Result 6769 states and 9275 transitions. [2022-12-13 10:57:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 10:57:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-12-13 10:57:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:57,157 INFO L225 Difference]: With dead ends: 6769 [2022-12-13 10:57:57,157 INFO L226 Difference]: Without dead ends: 6405 [2022-12-13 10:57:57,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2022-12-13 10:57:57,159 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1804 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:57,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 3094 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 10:57:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2022-12-13 10:57:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 2606. [2022-12-13 10:57:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2605 states have (on average 1.3531669865642995) internal successors, (3525), 2605 states have internal predecessors, (3525), 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) [2022-12-13 10:57:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3525 transitions. [2022-12-13 10:57:58,135 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3525 transitions. Word has length 63 [2022-12-13 10:57:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:57:58,135 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3525 transitions. [2022-12-13 10:57:58,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3525 transitions. [2022-12-13 10:57:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 10:57:58,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:58,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:58,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 10:57:58,137 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:57:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1695928295, now seen corresponding path program 1 times [2022-12-13 10:57:58,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:58,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535607911] [2022-12-13 10:57:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:58,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:58,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:58,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535607911] [2022-12-13 10:57:58,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535607911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:58,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:58,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:58,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577071601] [2022-12-13 10:57:58,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:58,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:58,186 INFO L87 Difference]: Start difference. First operand 2606 states and 3525 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:57:59,152 INFO L93 Difference]: Finished difference Result 2612 states and 3528 transitions. [2022-12-13 10:57:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:59,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 10:57:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:57:59,155 INFO L225 Difference]: With dead ends: 2612 [2022-12-13 10:57:59,155 INFO L226 Difference]: Without dead ends: 2386 [2022-12-13 10:57:59,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:59,156 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 555 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:57:59,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 628 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:57:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-12-13 10:58:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2382. [2022-12-13 10:58:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.3548929021419571) internal successors, (3226), 2381 states have internal predecessors, (3226), 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) [2022-12-13 10:58:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3226 transitions. [2022-12-13 10:58:00,066 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3226 transitions. Word has length 65 [2022-12-13 10:58:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:00,066 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3226 transitions. [2022-12-13 10:58:00,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3226 transitions. [2022-12-13 10:58:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 10:58:00,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:00,067 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] [2022-12-13 10:58:00,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 10:58:00,067 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1507814999, now seen corresponding path program 1 times [2022-12-13 10:58:00,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:00,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043408081] [2022-12-13 10:58:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:00,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:00,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043408081] [2022-12-13 10:58:00,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043408081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:00,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:00,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:58:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616998271] [2022-12-13 10:58:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:00,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:00,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:00,145 INFO L87 Difference]: Start difference. First operand 2382 states and 3226 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-12-13 10:58:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:01,841 INFO L93 Difference]: Finished difference Result 5821 states and 8010 transitions. [2022-12-13 10:58:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-12-13 10:58:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:01,844 INFO L225 Difference]: With dead ends: 5821 [2022-12-13 10:58:01,844 INFO L226 Difference]: Without dead ends: 4024 [2022-12-13 10:58:01,846 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 [2022-12-13 10:58:01,846 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 103 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:58:01,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 413 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2022-12-13 10:58:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3756. [2022-12-13 10:58:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3755 states have (on average 1.363515312916112) internal successors, (5120), 3755 states have internal predecessors, (5120), 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) [2022-12-13 10:58:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5120 transitions. [2022-12-13 10:58:03,372 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5120 transitions. Word has length 68 [2022-12-13 10:58:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:03,372 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 5120 transitions. [2022-12-13 10:58:03,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-12-13 10:58:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5120 transitions. [2022-12-13 10:58:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 10:58:03,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:03,374 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] [2022-12-13 10:58:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 10:58:03,374 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1724760844, now seen corresponding path program 1 times [2022-12-13 10:58:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:03,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398606657] [2022-12-13 10:58:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:03,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398606657] [2022-12-13 10:58:03,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398606657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:03,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:03,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:58:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446384092] [2022-12-13 10:58:03,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:03,423 INFO L87 Difference]: Start difference. First operand 3756 states and 5120 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-12-13 10:58:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:06,276 INFO L93 Difference]: Finished difference Result 9788 states and 13454 transitions. [2022-12-13 10:58:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:06,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-12-13 10:58:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:06,282 INFO L225 Difference]: With dead ends: 9788 [2022-12-13 10:58:06,282 INFO L226 Difference]: Without dead ends: 6617 [2022-12-13 10:58:06,284 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 [2022-12-13 10:58:06,285 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 92 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:58:06,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 405 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2022-12-13 10:58:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6083. [2022-12-13 10:58:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 6082 states have (on average 1.3633673133837554) internal successors, (8292), 6082 states have internal predecessors, (8292), 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) [2022-12-13 10:58:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 8292 transitions. [2022-12-13 10:58:08,844 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 8292 transitions. Word has length 69 [2022-12-13 10:58:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:08,845 INFO L495 AbstractCegarLoop]: Abstraction has 6083 states and 8292 transitions. [2022-12-13 10:58:08,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-12-13 10:58:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 8292 transitions. [2022-12-13 10:58:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 10:58:08,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:08,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:58:08,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 10:58:08,846 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:08,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:08,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1274692746, now seen corresponding path program 1 times [2022-12-13 10:58:08,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:08,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011636367] [2022-12-13 10:58:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:08,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:08,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011636367] [2022-12-13 10:58:08,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011636367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:08,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:08,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:58:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717294430] [2022-12-13 10:58:08,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:08,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:58:08,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:58:08,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:58:08,947 INFO L87 Difference]: Start difference. First operand 6083 states and 8292 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2022-12-13 10:58:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:15,167 INFO L93 Difference]: Finished difference Result 12863 states and 17294 transitions. [2022-12-13 10:58:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 10:58:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 72 [2022-12-13 10:58:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:15,178 INFO L225 Difference]: With dead ends: 12863 [2022-12-13 10:58:15,178 INFO L226 Difference]: Without dead ends: 12861 [2022-12-13 10:58:15,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 10:58:15,180 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 312 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:58:15,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 999 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12861 states. [2022-12-13 10:58:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12861 to 6575. [2022-12-13 10:58:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.3361728019470642) internal successors, (8784), 6574 states have internal predecessors, (8784), 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) [2022-12-13 10:58:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 8784 transitions. [2022-12-13 10:58:18,261 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 8784 transitions. Word has length 72 [2022-12-13 10:58:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:18,261 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 8784 transitions. [2022-12-13 10:58:18,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2022-12-13 10:58:18,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 8784 transitions. [2022-12-13 10:58:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 10:58:18,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:18,263 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] [2022-12-13 10:58:18,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 10:58:18,263 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:18,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1392355153, now seen corresponding path program 1 times [2022-12-13 10:58:18,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:18,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702157781] [2022-12-13 10:58:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:18,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:18,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:18,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702157781] [2022-12-13 10:58:18,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702157781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:18,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:18,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:58:18,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089398290] [2022-12-13 10:58:18,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:18,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:18,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:18,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:18,289 INFO L87 Difference]: Start difference. First operand 6575 states and 8784 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-12-13 10:58:23,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:23,750 INFO L93 Difference]: Finished difference Result 17171 states and 22931 transitions. [2022-12-13 10:58:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:23,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-12-13 10:58:23,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:23,760 INFO L225 Difference]: With dead ends: 17171 [2022-12-13 10:58:23,760 INFO L226 Difference]: Without dead ends: 11089 [2022-12-13 10:58:23,764 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 [2022-12-13 10:58:23,764 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 122 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 10:58:23,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 317 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2022-12-13 10:58:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 10923. [2022-12-13 10:58:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10922 states have (on average 1.3022340230726972) internal successors, (14223), 10922 states have internal predecessors, (14223), 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) [2022-12-13 10:58:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 14223 transitions. [2022-12-13 10:58:29,217 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 14223 transitions. Word has length 73 [2022-12-13 10:58:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:29,217 INFO L495 AbstractCegarLoop]: Abstraction has 10923 states and 14223 transitions. [2022-12-13 10:58:29,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-12-13 10:58:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 14223 transitions. [2022-12-13 10:58:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 10:58:29,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:29,218 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] [2022-12-13 10:58:29,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 10:58:29,219 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2638653, now seen corresponding path program 1 times [2022-12-13 10:58:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:29,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631800202] [2022-12-13 10:58:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:29,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:29,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631800202] [2022-12-13 10:58:29,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631800202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:29,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:29,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:58:29,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052490128] [2022-12-13 10:58:29,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:29,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:29,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:29,260 INFO L87 Difference]: Start difference. First operand 10923 states and 14223 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-12-13 10:58:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:58:37,804 INFO L93 Difference]: Finished difference Result 27479 states and 35765 transitions. [2022-12-13 10:58:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-12-13 10:58:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 10:58:37,819 INFO L225 Difference]: With dead ends: 27479 [2022-12-13 10:58:37,819 INFO L226 Difference]: Without dead ends: 17032 [2022-12-13 10:58:37,826 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 [2022-12-13 10:58:37,826 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 96 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 400 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 [2022-12-13 10:58:37,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 400 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 10:58:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2022-12-13 10:58:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 15446. [2022-12-13 10:58:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 15445 states have (on average 1.2905147296859825) internal successors, (19932), 15445 states have internal predecessors, (19932), 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) [2022-12-13 10:58:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 19932 transitions. [2022-12-13 10:58:45,710 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 19932 transitions. Word has length 74 [2022-12-13 10:58:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 10:58:45,710 INFO L495 AbstractCegarLoop]: Abstraction has 15446 states and 19932 transitions. [2022-12-13 10:58:45,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-12-13 10:58:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 19932 transitions. [2022-12-13 10:58:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 10:58:45,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:58:45,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:58:45,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 10:58:45,713 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 10:58:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash -786165995, now seen corresponding path program 1 times [2022-12-13 10:58:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:45,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794340773] [2022-12-13 10:58:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:45,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:45,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:45,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794340773] [2022-12-13 10:58:45,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794340773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:58:45,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441635348] [2022-12-13 10:58:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:45,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:58:45,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:58:45,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:58:45,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 10:58:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:45,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 10:58:45,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:58:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:47,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:58:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:48,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441635348] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:58:48,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:58:48,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-12-13 10:58:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301627686] [2022-12-13 10:58:48,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:58:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 10:58:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 10:58:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-12-13 10:58:48,138 INFO L87 Difference]: Start difference. First operand 15446 states and 19932 transitions. Second operand has 32 states, 32 states have (on average 7.65625) internal successors, (245), 31 states have internal predecessors, (245), 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) [2022-12-13 11:00:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:00:43,988 INFO L93 Difference]: Finished difference Result 161413 states and 204558 transitions. [2022-12-13 11:00:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2022-12-13 11:00:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.65625) internal successors, (245), 31 states have internal predecessors, (245), 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 92 [2022-12-13 11:00:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:00:44,213 INFO L225 Difference]: With dead ends: 161413 [2022-12-13 11:00:44,213 INFO L226 Difference]: Without dead ends: 153703 [2022-12-13 11:00:44,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51474 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=17824, Invalid=97436, Unknown=0, NotChecked=0, Total=115260 [2022-12-13 11:00:44,264 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 8172 mSDsluCounter, 7382 mSDsCounter, 0 mSdLazyCounter, 6811 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8172 SdHoareTripleChecker+Valid, 7759 SdHoareTripleChecker+Invalid, 6933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 6811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:00:44,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8172 Valid, 7759 Invalid, 6933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 6811 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 11:00:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153703 states. [2022-12-13 11:01:04,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153703 to 32177. [2022-12-13 11:01:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32177 states, 32176 states have (on average 1.2914594728990552) internal successors, (41554), 32176 states have internal predecessors, (41554), 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) [2022-12-13 11:01:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32177 states to 32177 states and 41554 transitions. [2022-12-13 11:01:04,779 INFO L78 Accepts]: Start accepts. Automaton has 32177 states and 41554 transitions. Word has length 92 [2022-12-13 11:01:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:01:04,780 INFO L495 AbstractCegarLoop]: Abstraction has 32177 states and 41554 transitions. [2022-12-13 11:01:04,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.65625) internal successors, (245), 31 states have internal predecessors, (245), 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) [2022-12-13 11:01:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 32177 states and 41554 transitions. [2022-12-13 11:01:04,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 11:01:04,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:01:04,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:01:04,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:01:04,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:01:04,986 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:01:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:01:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 960217551, now seen corresponding path program 1 times [2022-12-13 11:01:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:01:04,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230614539] [2022-12-13 11:01:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:01:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:01:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:01:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:01:05,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:01:05,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230614539] [2022-12-13 11:01:05,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230614539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:01:05,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:01:05,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:01:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452822129] [2022-12-13 11:01:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:01:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:01:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:01:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:01:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:01:05,184 INFO L87 Difference]: Start difference. First operand 32177 states and 41554 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 9 states have internal predecessors, (92), 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) [2022-12-13 11:01:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:01:58,279 INFO L93 Difference]: Finished difference Result 92650 states and 118440 transitions. [2022-12-13 11:01:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:01:58,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 9 states have internal predecessors, (92), 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 92 [2022-12-13 11:01:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:01:58,383 INFO L225 Difference]: With dead ends: 92650 [2022-12-13 11:01:58,383 INFO L226 Difference]: Without dead ends: 80058 [2022-12-13 11:01:58,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:01:58,406 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 918 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:01:58,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1059 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:01:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80058 states. [2022-12-13 11:02:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80058 to 46603. [2022-12-13 11:02:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46603 states, 46602 states have (on average 1.2899875541822239) internal successors, (60116), 46602 states have internal predecessors, (60116), 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) [2022-12-13 11:02:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46603 states to 46603 states and 60116 transitions. [2022-12-13 11:02:27,614 INFO L78 Accepts]: Start accepts. Automaton has 46603 states and 60116 transitions. Word has length 92 [2022-12-13 11:02:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:02:27,614 INFO L495 AbstractCegarLoop]: Abstraction has 46603 states and 60116 transitions. [2022-12-13 11:02:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 9 states have internal predecessors, (92), 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) [2022-12-13 11:02:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 46603 states and 60116 transitions. [2022-12-13 11:02:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 11:02:27,619 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:02:27,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:02:27,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 11:02:27,620 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:02:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:02:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash 504447511, now seen corresponding path program 1 times [2022-12-13 11:02:27,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:02:27,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659623834] [2022-12-13 11:02:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:02:27,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:02:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:02:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:02:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:02:27,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659623834] [2022-12-13 11:02:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659623834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:02:27,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:02:27,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:02:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122169966] [2022-12-13 11:02:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:02:27,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:02:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:02:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:02:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:02:27,664 INFO L87 Difference]: Start difference. First operand 46603 states and 60116 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-12-13 11:02:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:02:56,678 INFO L93 Difference]: Finished difference Result 92620 states and 119577 transitions. [2022-12-13 11:02:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:02:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-12-13 11:02:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:02:56,731 INFO L225 Difference]: With dead ends: 92620 [2022-12-13 11:02:56,731 INFO L226 Difference]: Without dead ends: 46605 [2022-12-13 11:02:56,756 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 [2022-12-13 11:02:56,757 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 88 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:02:56,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 345 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:02:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46605 states. [2022-12-13 11:03:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46605 to 44892. [2022-12-13 11:03:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44892 states, 44891 states have (on average 1.2710120068610635) internal successors, (57057), 44891 states have internal predecessors, (57057), 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) [2022-12-13 11:03:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44892 states to 44892 states and 57057 transitions. [2022-12-13 11:03:24,678 INFO L78 Accepts]: Start accepts. Automaton has 44892 states and 57057 transitions. Word has length 93 [2022-12-13 11:03:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:03:24,678 INFO L495 AbstractCegarLoop]: Abstraction has 44892 states and 57057 transitions. [2022-12-13 11:03:24,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-12-13 11:03:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 44892 states and 57057 transitions. [2022-12-13 11:03:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 11:03:24,682 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:03:24,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:03:24,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 11:03:24,683 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:03:24,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:03:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash -460824765, now seen corresponding path program 1 times [2022-12-13 11:03:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:03:24,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287935105] [2022-12-13 11:03:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:03:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:03:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:03:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:03:24,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287935105] [2022-12-13 11:03:24,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287935105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:03:24,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845862732] [2022-12-13 11:03:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:03:24,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:03:24,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:03:24,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:03:24,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:03:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:03:24,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:03:24,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:03:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:03:25,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:03:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:03:25,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845862732] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:03:25,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:03:25,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 11:03:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103275506] [2022-12-13 11:03:25,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:03:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:03:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:03:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:03:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:03:25,172 INFO L87 Difference]: Start difference. First operand 44892 states and 57057 transitions. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 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) [2022-12-13 11:04:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:04:23,108 INFO L93 Difference]: Finished difference Result 130845 states and 165061 transitions. [2022-12-13 11:04:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:04:23,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 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 93 [2022-12-13 11:04:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:04:23,220 INFO L225 Difference]: With dead ends: 130845 [2022-12-13 11:04:23,220 INFO L226 Difference]: Without dead ends: 86541 [2022-12-13 11:04:23,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 180 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:04:23,251 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 307 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:04:23,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1120 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:04:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86541 states. [2022-12-13 11:05:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86541 to 67640. [2022-12-13 11:05:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67640 states, 67639 states have (on average 1.263368766540014) internal successors, (85453), 67639 states have internal predecessors, (85453), 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) [2022-12-13 11:05:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67640 states to 67640 states and 85453 transitions. [2022-12-13 11:05:07,747 INFO L78 Accepts]: Start accepts. Automaton has 67640 states and 85453 transitions. Word has length 93 [2022-12-13 11:05:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:05:07,747 INFO L495 AbstractCegarLoop]: Abstraction has 67640 states and 85453 transitions. [2022-12-13 11:05:07,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 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) [2022-12-13 11:05:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 67640 states and 85453 transitions. [2022-12-13 11:05:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 11:05:07,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:05:07,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:05:07,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 11:05:07,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 11:05:07,956 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:05:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:05:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1205323214, now seen corresponding path program 1 times [2022-12-13 11:05:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:05:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229510364] [2022-12-13 11:05:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:05:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 11:05:08,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:05:08,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229510364] [2022-12-13 11:05:08,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229510364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:05:08,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:05:08,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:05:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18487489] [2022-12-13 11:05:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:05:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:05:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:05:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:05:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:05:08,016 INFO L87 Difference]: Start difference. First operand 67640 states and 85453 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-12-13 11:05:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:05:51,870 INFO L93 Difference]: Finished difference Result 128865 states and 162998 transitions. [2022-12-13 11:05:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:05:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 99 [2022-12-13 11:05:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:05:51,958 INFO L225 Difference]: With dead ends: 128865 [2022-12-13 11:05:51,958 INFO L226 Difference]: Without dead ends: 61813 [2022-12-13 11:05:51,994 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 [2022-12-13 11:05:51,995 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 146 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:05:51,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 185 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:05:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61813 states. [2022-12-13 11:06:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61813 to 60345. [2022-12-13 11:06:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60345 states, 60344 states have (on average 1.247414821688983) internal successors, (75274), 60344 states have internal predecessors, (75274), 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) [2022-12-13 11:06:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60345 states to 60345 states and 75274 transitions. [2022-12-13 11:06:32,771 INFO L78 Accepts]: Start accepts. Automaton has 60345 states and 75274 transitions. Word has length 99 [2022-12-13 11:06:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:06:32,771 INFO L495 AbstractCegarLoop]: Abstraction has 60345 states and 75274 transitions. [2022-12-13 11:06:32,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-12-13 11:06:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 60345 states and 75274 transitions. [2022-12-13 11:06:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 11:06:32,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:06:32,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:06:32,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 11:06:32,781 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:06:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:06:32,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1417910127, now seen corresponding path program 1 times [2022-12-13 11:06:32,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:06:32,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770504242] [2022-12-13 11:06:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:06:32,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:06:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:06:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:06:32,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:06:32,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770504242] [2022-12-13 11:06:32,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770504242] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:06:32,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975215792] [2022-12-13 11:06:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:06:32,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:06:32,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:06:32,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:06:32,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:06:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:06:32,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:06:32,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:06:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:06:33,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:06:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:06:33,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975215792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:06:33,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:06:33,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2022-12-13 11:06:33,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56184284] [2022-12-13 11:06:33,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:06:33,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:06:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:06:33,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:06:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:06:33,161 INFO L87 Difference]: Start difference. First operand 60345 states and 75274 transitions. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-12-13 11:07:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:21,862 INFO L93 Difference]: Finished difference Result 129593 states and 161469 transitions. [2022-12-13 11:07:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:07:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 100 [2022-12-13 11:07:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:21,974 INFO L225 Difference]: With dead ends: 129593 [2022-12-13 11:07:21,974 INFO L226 Difference]: Without dead ends: 69785 [2022-12-13 11:07:22,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:07:22,007 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 2407 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:22,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 692 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:07:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69785 states. [2022-12-13 11:07:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69785 to 49120. [2022-12-13 11:07:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49120 states, 49119 states have (on average 1.2290966835644048) internal successors, (60372), 49119 states have internal predecessors, (60372), 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) [2022-12-13 11:07:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49120 states to 49120 states and 60372 transitions. [2022-12-13 11:07:55,143 INFO L78 Accepts]: Start accepts. Automaton has 49120 states and 60372 transitions. Word has length 100 [2022-12-13 11:07:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:55,144 INFO L495 AbstractCegarLoop]: Abstraction has 49120 states and 60372 transitions. [2022-12-13 11:07:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-12-13 11:07:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 49120 states and 60372 transitions. [2022-12-13 11:07:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 11:07:55,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:55,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:55,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:07:55,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 11:07:55,351 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1833377605, now seen corresponding path program 1 times [2022-12-13 11:07:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:55,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772858003] [2022-12-13 11:07:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:55,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:55,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772858003] [2022-12-13 11:07:55,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772858003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:07:55,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:07:55,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:07:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270685297] [2022-12-13 11:07:55,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:07:55,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:07:55,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:07:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:07:55,405 INFO L87 Difference]: Start difference. First operand 49120 states and 60372 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2022-12-13 11:08:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:33,117 INFO L93 Difference]: Finished difference Result 103259 states and 126458 transitions. [2022-12-13 11:08:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:08:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 104 [2022-12-13 11:08:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:33,184 INFO L225 Difference]: With dead ends: 103259 [2022-12-13 11:08:33,184 INFO L226 Difference]: Without dead ends: 54710 [2022-12-13 11:08:33,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:08:33,211 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 477 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:33,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 355 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:08:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54710 states. [2022-12-13 11:09:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54710 to 46606. [2022-12-13 11:09:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46606 states, 46605 states have (on average 1.2021671494474842) internal successors, (56027), 46605 states have internal predecessors, (56027), 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) [2022-12-13 11:09:03,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46606 states to 46606 states and 56027 transitions. [2022-12-13 11:09:03,877 INFO L78 Accepts]: Start accepts. Automaton has 46606 states and 56027 transitions. Word has length 104 [2022-12-13 11:09:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:09:03,877 INFO L495 AbstractCegarLoop]: Abstraction has 46606 states and 56027 transitions. [2022-12-13 11:09:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2022-12-13 11:09:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 46606 states and 56027 transitions. [2022-12-13 11:09:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 11:09:03,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:09:03,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:03,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 11:09:03,884 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:09:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -13984917, now seen corresponding path program 1 times [2022-12-13 11:09:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:03,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37869355] [2022-12-13 11:09:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:03,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37869355] [2022-12-13 11:09:03,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37869355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167346566] [2022-12-13 11:09:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:03,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:03,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:03,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4ce7e0-055f-40c2-8845-cde96fca42e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:09:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:04,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:09:04,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:04,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:04,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167346566] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:04,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:04,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2022-12-13 11:09:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789763080] [2022-12-13 11:09:04,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:04,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:09:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:09:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:09:04,306 INFO L87 Difference]: Start difference. First operand 46606 states and 56027 transitions. Second operand has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 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) [2022-12-13 11:09:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:09:58,173 INFO L93 Difference]: Finished difference Result 121960 states and 145465 transitions. [2022-12-13 11:09:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:09:58,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 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 104 [2022-12-13 11:09:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:09:58,265 INFO L225 Difference]: With dead ends: 121960 [2022-12-13 11:09:58,265 INFO L226 Difference]: Without dead ends: 75925 [2022-12-13 11:09:58,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:09:58,298 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1359 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:09:58,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 779 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:09:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75925 states.