./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38a1f42f3cb7a9f66fd0bd1b473ab60f2efbe0fc9c998d9f18da86c331297566 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:21:00,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:21:00,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:21:01,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:21:01,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:21:01,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:21:01,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:21:01,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:21:01,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:21:01,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:21:01,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:21:01,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:21:01,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:21:01,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:21:01,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:21:01,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:21:01,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:21:01,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:21:01,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:21:01,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:21:01,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:21:01,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:21:01,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:21:01,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:21:01,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:21:01,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:21:01,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:21:01,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:21:01,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:21:01,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:21:01,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:21:01,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:21:01,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:21:01,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:21:01,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:21:01,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:21:01,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:21:01,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:21:01,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:21:01,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:21:01,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:21:01,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:21:01,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:21:01,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:21:01,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:21:01,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:21:01,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:21:01,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:21:01,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:21:01,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:21:01,114 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:21:01,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:21:01,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:21:01,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:21:01,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:21:01,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:21:01,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:21:01,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:21:01,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:21:01,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:21:01,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:21:01,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:21:01,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:21:01,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:21:01,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:21:01,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:21:01,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:21:01,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:21:01,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:21:01,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:21:01,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:21:01,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:21:01,121 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:21:01,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:21:01,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:21:01,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a1f42f3cb7a9f66fd0bd1b473ab60f2efbe0fc9c998d9f18da86c331297566 [2022-11-18 20:21:01,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:21:01,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:21:01,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:21:01,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:21:01,498 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:21:01,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c [2022-11-18 20:21:01,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/data/e474975ca/868fabf598684e759a776cffef883923/FLAGbad402147 [2022-11-18 20:21:02,781 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:21:02,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c [2022-11-18 20:21:02,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/data/e474975ca/868fabf598684e759a776cffef883923/FLAGbad402147 [2022-11-18 20:21:02,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/data/e474975ca/868fabf598684e759a776cffef883923 [2022-11-18 20:21:02,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:21:02,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:21:02,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:21:02,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:21:02,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:21:02,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:21:02" (1/1) ... [2022-11-18 20:21:02,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8abb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:02, skipping insertion in model container [2022-11-18 20:21:02,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:21:02" (1/1) ... [2022-11-18 20:21:02,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:21:03,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:21:05,585 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[380593,380606] [2022-11-18 20:21:05,619 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[383339,383352] [2022-11-18 20:21:06,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:21:06,061 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:21:07,242 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[380593,380606] [2022-11-18 20:21:07,248 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[383339,383352] [2022-11-18 20:21:07,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:21:07,375 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:21:07,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07 WrapperNode [2022-11-18 20:21:07,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:21:07,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:21:07,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:21:07,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:21:07,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:07,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,011 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2022-11-18 20:21:08,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:21:08,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:21:08,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:21:08,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:21:08,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:21:08,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:21:08,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:21:08,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:21:08,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (1/1) ... [2022-11-18 20:21:08,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:21:08,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:08,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:21:08,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a670c2e-0f59-4550-85ed-6bee613d7a90/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:21:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:21:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 20:21:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 20:21:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:21:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:21:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 20:21:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 20:21:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-18 20:21:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-18 20:21:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 20:21:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 20:21:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 20:21:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 20:21:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 20:21:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 20:21:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:21:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:21:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:21:08,965 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:21:08,984 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:21:18,197 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:21:18,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:21:18,231 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:21:18,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:21:18 BoogieIcfgContainer [2022-11-18 20:21:18,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:21:18,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:21:18,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:21:18,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:21:18,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:21:02" (1/3) ... [2022-11-18 20:21:18,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b3c8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:21:18, skipping insertion in model container [2022-11-18 20:21:18,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:07" (2/3) ... [2022-11-18 20:21:18,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b3c8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:21:18, skipping insertion in model container [2022-11-18 20:21:18,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:21:18" (3/3) ... [2022-11-18 20:21:18,256 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.14.cil.c [2022-11-18 20:21:18,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:21:18,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:21:18,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:21:18,395 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;@20c54fac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:21:18,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:21:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-18 20:21:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:18,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:18,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:18,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2022-11-18 20:21:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:18,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247389457] [2022-11-18 20:21:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:19,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247389457] [2022-11-18 20:21:19,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247389457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:19,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:19,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:21:19,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121690628] [2022-11-18 20:21:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:19,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:21:19,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:21:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:21:19,191 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:22,027 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2022-11-18 20:21:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:21:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:22,057 INFO L225 Difference]: With dead ends: 5277 [2022-11-18 20:21:22,057 INFO L226 Difference]: Without dead ends: 2645 [2022-11-18 20:21:22,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:21:22,075 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 1048 mSDsluCounter, 12475 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 16852 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:22,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 16852 Invalid, 1097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:21:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-18 20:21:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2022-11-18 20:21:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-18 20:21:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2022-11-18 20:21:22,278 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2022-11-18 20:21:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:22,279 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2022-11-18 20:21:22,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2022-11-18 20:21:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:22,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:22,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:22,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:21:22,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2022-11-18 20:21:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:22,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326963951] [2022-11-18 20:21:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:22,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:22,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326963951] [2022-11-18 20:21:22,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326963951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:22,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:22,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:21:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602039489] [2022-11-18 20:21:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:22,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:21:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:21:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:21:22,617 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:25,228 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2022-11-18 20:21:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:21:25,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:25,242 INFO L225 Difference]: With dead ends: 3012 [2022-11-18 20:21:25,243 INFO L226 Difference]: Without dead ends: 2645 [2022-11-18 20:21:25,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:21:25,249 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 1034 mSDsluCounter, 12272 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16579 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:25,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 16579 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:21:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-18 20:21:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2022-11-18 20:21:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-18 20:21:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2022-11-18 20:21:25,390 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2022-11-18 20:21:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:25,392 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2022-11-18 20:21:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2022-11-18 20:21:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:25,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:25,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:21:25,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2022-11-18 20:21:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:25,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006127353] [2022-11-18 20:21:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006127353] [2022-11-18 20:21:25,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006127353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:25,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:25,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:21:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772983296] [2022-11-18 20:21:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:25,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:21:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:25,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:21:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:21:25,860 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:30,450 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2022-11-18 20:21:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:21:30,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:30,466 INFO L225 Difference]: With dead ends: 3529 [2022-11-18 20:21:30,466 INFO L226 Difference]: Without dead ends: 3167 [2022-11-18 20:21:30,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:21:30,470 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 5529 mSDsluCounter, 12838 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 17150 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:30,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5548 Valid, 17150 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-18 20:21:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2022-11-18 20:21:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2022-11-18 20:21:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-18 20:21:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2022-11-18 20:21:30,614 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2022-11-18 20:21:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:30,615 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2022-11-18 20:21:30,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2022-11-18 20:21:30,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:30,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:30,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:30,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:21:30,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2022-11-18 20:21:30,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:30,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783640862] [2022-11-18 20:21:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:30,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:30,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783640862] [2022-11-18 20:21:30,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783640862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:30,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:30,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:30,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622595229] [2022-11-18 20:21:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:30,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:30,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:30,990 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:36,379 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2022-11-18 20:21:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:36,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:36,395 INFO L225 Difference]: With dead ends: 4448 [2022-11-18 20:21:36,396 INFO L226 Difference]: Without dead ends: 3707 [2022-11-18 20:21:36,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:21:36,400 INFO L413 NwaCegarLoop]: 4522 mSDtfsCounter, 5562 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5581 SdHoareTripleChecker+Valid, 22270 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:36,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5581 Valid, 22270 Invalid, 3664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-18 20:21:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2022-11-18 20:21:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2022-11-18 20:21:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-18 20:21:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2022-11-18 20:21:36,603 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2022-11-18 20:21:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:36,604 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2022-11-18 20:21:36,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2022-11-18 20:21:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:36,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:36,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:21:36,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2022-11-18 20:21:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:36,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654257379] [2022-11-18 20:21:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:36,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:36,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:36,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654257379] [2022-11-18 20:21:36,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654257379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:36,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:36,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:36,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613539436] [2022-11-18 20:21:36,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:36,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:36,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:36,913 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:42,019 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2022-11-18 20:21:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:42,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:42,044 INFO L225 Difference]: With dead ends: 5803 [2022-11-18 20:21:42,044 INFO L226 Difference]: Without dead ends: 4710 [2022-11-18 20:21:42,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:21:42,058 INFO L413 NwaCegarLoop]: 4317 mSDtfsCounter, 5676 mSDsluCounter, 17090 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5695 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:42,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5695 Valid, 21407 Invalid, 3292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:21:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-11-18 20:21:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2022-11-18 20:21:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-18 20:21:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2022-11-18 20:21:42,414 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2022-11-18 20:21:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:42,414 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2022-11-18 20:21:42,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2022-11-18 20:21:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:42,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:42,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:21:42,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2022-11-18 20:21:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755139591] [2022-11-18 20:21:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:42,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:42,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:42,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755139591] [2022-11-18 20:21:42,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755139591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:42,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:42,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:42,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565953206] [2022-11-18 20:21:42,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:42,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:42,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:42,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:42,794 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:48,761 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2022-11-18 20:21:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:48,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:48,808 INFO L225 Difference]: With dead ends: 8408 [2022-11-18 20:21:48,808 INFO L226 Difference]: Without dead ends: 6610 [2022-11-18 20:21:48,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:21:48,821 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5560 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:48,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 22268 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:21:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2022-11-18 20:21:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2022-11-18 20:21:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-18 20:21:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2022-11-18 20:21:49,378 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2022-11-18 20:21:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:49,379 INFO L495 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2022-11-18 20:21:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2022-11-18 20:21:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:49,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:49,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:49,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:21:49,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2022-11-18 20:21:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:49,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383503234] [2022-11-18 20:21:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:49,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:49,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:49,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383503234] [2022-11-18 20:21:49,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383503234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:49,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:49,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823365077] [2022-11-18 20:21:49,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:49,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:49,764 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:55,940 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2022-11-18 20:21:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:55,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:21:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:55,981 INFO L225 Difference]: With dead ends: 13610 [2022-11-18 20:21:55,981 INFO L226 Difference]: Without dead ends: 10401 [2022-11-18 20:21:55,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:21:55,996 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5556 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:55,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 22268 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:21:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2022-11-18 20:21:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2022-11-18 20:21:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-18 20:21:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2022-11-18 20:21:56,805 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2022-11-18 20:21:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:56,806 INFO L495 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2022-11-18 20:21:56,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:21:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2022-11-18 20:21:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:21:56,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:56,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:56,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:21:56,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2022-11-18 20:21:56,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:56,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092666432] [2022-11-18 20:21:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:56,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:21:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:21:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:21:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:21:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:21:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:57,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:57,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092666432] [2022-11-18 20:21:57,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092666432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:57,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:57,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990620846] [2022-11-18 20:21:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:57,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:57,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:57,132 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:04,394 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2022-11-18 20:22:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:22:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:04,464 INFO L225 Difference]: With dead ends: 24032 [2022-11-18 20:22:04,464 INFO L226 Difference]: Without dead ends: 17987 [2022-11-18 20:22:04,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:22:04,489 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5555 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5574 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:04,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5574 Valid, 22268 Invalid, 3614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:22:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2022-11-18 20:22:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2022-11-18 20:22:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-18 20:22:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2022-11-18 20:22:05,952 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2022-11-18 20:22:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:05,953 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2022-11-18 20:22:05,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2022-11-18 20:22:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:22:05,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:05,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:22:05,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2022-11-18 20:22:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698498629] [2022-11-18 20:22:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:22:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:22:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:22:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:22:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:22:06,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:06,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698498629] [2022-11-18 20:22:06,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698498629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:06,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:06,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835609572] [2022-11-18 20:22:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:06,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:06,292 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:11,062 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2022-11-18 20:22:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:22:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:22:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:11,129 INFO L225 Difference]: With dead ends: 29968 [2022-11-18 20:22:11,129 INFO L226 Difference]: Without dead ends: 18238 [2022-11-18 20:22:11,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:22:11,167 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 5108 mSDsluCounter, 16780 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 21042 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:11,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 21042 Invalid, 1883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:22:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2022-11-18 20:22:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2022-11-18 20:22:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-18 20:22:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2022-11-18 20:22:12,940 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2022-11-18 20:22:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:12,941 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2022-11-18 20:22:12,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2022-11-18 20:22:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:22:12,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:12,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:12,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:22:12,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2022-11-18 20:22:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:12,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337264488] [2022-11-18 20:22:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:22:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:22:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:22:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:22:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:22:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:13,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337264488] [2022-11-18 20:22:13,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337264488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:13,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:13,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563944543] [2022-11-18 20:22:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:13,266 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:22,645 INFO L93 Difference]: Finished difference Result 44841 states and 72377 transitions. [2022-11-18 20:22:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:22:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:22,756 INFO L225 Difference]: With dead ends: 44841 [2022-11-18 20:22:22,756 INFO L226 Difference]: Without dead ends: 33111 [2022-11-18 20:22:22,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:22:22,797 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5547 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5566 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:22,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5566 Valid, 22268 Invalid, 3576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:22:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2022-11-18 20:22:26,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 25305. [2022-11-18 20:22:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25305 states, 23477 states have (on average 1.5904502278826085) internal successors, (37339), 23544 states have internal predecessors, (37339), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-18 20:22:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25305 states to 25305 states and 40874 transitions. [2022-11-18 20:22:26,284 INFO L78 Accepts]: Start accepts. Automaton has 25305 states and 40874 transitions. Word has length 179 [2022-11-18 20:22:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:26,284 INFO L495 AbstractCegarLoop]: Abstraction has 25305 states and 40874 transitions. [2022-11-18 20:22:26,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25305 states and 40874 transitions. [2022-11-18 20:22:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:22:26,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:26,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:26,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:22:26,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2022-11-18 20:22:26,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:26,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568884824] [2022-11-18 20:22:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:26,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:22:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:22:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:22:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:22:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:22:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:26,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568884824] [2022-11-18 20:22:26,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568884824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:26,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:26,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:26,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350092029] [2022-11-18 20:22:26,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:26,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:26,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:26,608 INFO L87 Difference]: Start difference. First operand 25305 states and 40874 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:41,201 INFO L93 Difference]: Finished difference Result 86529 states and 139953 transitions. [2022-11-18 20:22:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:22:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:41,443 INFO L225 Difference]: With dead ends: 86529 [2022-11-18 20:22:41,443 INFO L226 Difference]: Without dead ends: 63365 [2022-11-18 20:22:41,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:22:41,522 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5546 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:41,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5565 Valid, 22268 Invalid, 3563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:22:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63365 states. [2022-11-18 20:22:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63365 to 48234. [2022-11-18 20:22:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48234 states, 44614 states have (on average 1.5764782355314475) internal successors, (70333), 44745 states have internal predecessors, (70333), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-18 20:22:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48234 states to 48234 states and 78078 transitions. [2022-11-18 20:22:48,953 INFO L78 Accepts]: Start accepts. Automaton has 48234 states and 78078 transitions. Word has length 179 [2022-11-18 20:22:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:48,954 INFO L495 AbstractCegarLoop]: Abstraction has 48234 states and 78078 transitions. [2022-11-18 20:22:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:22:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 48234 states and 78078 transitions. [2022-11-18 20:22:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 20:22:48,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:48,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:48,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:22:48,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash -401983606, now seen corresponding path program 1 times [2022-11-18 20:22:48,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:48,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081513366] [2022-11-18 20:22:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:22:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:22:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:22:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:22:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:22:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081513366] [2022-11-18 20:22:49,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081513366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:49,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:49,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117014297] [2022-11-18 20:22:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:49,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:49,289 INFO L87 Difference]: Start difference. First operand 48234 states and 78078 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:23:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:15,256 INFO L93 Difference]: Finished difference Result 169904 states and 276951 transitions. [2022-11-18 20:23:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:23:15,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-18 20:23:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:15,691 INFO L225 Difference]: With dead ends: 169904 [2022-11-18 20:23:15,691 INFO L226 Difference]: Without dead ends: 123811 [2022-11-18 20:23:16,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:23:16,220 INFO L413 NwaCegarLoop]: 4317 mSDtfsCounter, 5649 mSDsluCounter, 17090 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5668 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:16,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5668 Valid, 21407 Invalid, 3216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:23:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123811 states.