./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R --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 d7b7824f74ab8cbbea36fdaee1d1dc5c7e52c10bcc21a0858c24d31348bf95ad --- 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-38b53e6 [2022-11-25 15:43:30,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:43:30,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:43:30,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:43:30,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:43:30,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:43:30,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:43:30,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:43:30,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:43:30,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:43:30,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:43:30,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:43:30,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:43:30,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:43:30,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:43:30,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:43:30,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:43:30,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:43:30,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:43:30,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:43:30,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:43:30,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:43:30,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:43:30,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:43:30,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:43:30,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:43:30,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:43:30,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:43:30,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:43:30,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:43:30,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:43:30,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:43:30,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:43:30,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:43:30,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:43:30,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:43:30,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:43:30,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:43:30,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:43:30,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:43:30,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:43:30,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:43:30,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:43:30,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:43:30,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:43:30,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:43:30,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:43:30,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:43:30,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:43:30,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:43:30,183 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:43:30,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:43:30,184 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:43:30,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:43:30,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:43:30,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:43:30,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:43:30,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:43:30,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:43:30,185 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:43:30,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:43:30,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:43:30,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:43:30,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:43:30,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:43:30,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:43:30,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:43:30,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:43:30,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:43:30,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:43:30,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:43:30,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:43:30,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:43:30,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:43:30,187 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:43:30,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:43:30,188 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b7824f74ab8cbbea36fdaee1d1dc5c7e52c10bcc21a0858c24d31348bf95ad [2022-11-25 15:43:30,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:43:30,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:43:30,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:43:30,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:43:30,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:43:30,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2022-11-25 15:43:33,531 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:43:34,102 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:43:34,103 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2022-11-25 15:43:34,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/data/18df4e5a3/ee26d89f7f1b419fa58a8d444beb59e7/FLAGdb5f7e329 [2022-11-25 15:43:34,161 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/data/18df4e5a3/ee26d89f7f1b419fa58a8d444beb59e7 [2022-11-25 15:43:34,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:43:34,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:43:34,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:43:34,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:43:34,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:43:34,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:43:34" (1/1) ... [2022-11-25 15:43:34,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbb5280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:34, skipping insertion in model container [2022-11-25 15:43:34,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:43:34" (1/1) ... [2022-11-25 15:43:34,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:43:34,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:43:34,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[6354,6367] [2022-11-25 15:43:34,850 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[13644,13657] [2022-11-25 15:43:35,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:43:35,934 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:43:35,957 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[6354,6367] [2022-11-25 15:43:35,970 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[13644,13657] [2022-11-25 15:43:36,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:43:36,595 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:43:36,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36 WrapperNode [2022-11-25 15:43:36,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:43:36,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:43:36,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:43:36,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:43:36,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:36,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,080 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4964 [2022-11-25 15:43:37,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:43:37,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:43:37,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:43:37,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:43:37,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:43:37,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:43:37,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:43:37,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:43:37,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (1/1) ... [2022-11-25 15:43:37,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:43:37,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:43:37,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:43:37,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:43:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:43:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:43:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:43:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:43:37,959 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:43:37,961 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:43:42,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:43:42,878 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:43:42,879 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 15:43:42,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:43:42 BoogieIcfgContainer [2022-11-25 15:43:42,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:43:42,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:43:42,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:43:42,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:43:42,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:43:34" (1/3) ... [2022-11-25 15:43:42,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:43:42, skipping insertion in model container [2022-11-25 15:43:42,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:36" (2/3) ... [2022-11-25 15:43:42,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:43:42, skipping insertion in model container [2022-11-25 15:43:42,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:43:42" (3/3) ... [2022-11-25 15:43:42,895 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2022-11-25 15:43:42,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:43:42,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 15:43:43,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:43:43,019 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;@598f6afc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:43:43,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 15:43:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 15:43:43,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:43,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:43,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2022-11-25 15:43:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:43,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273076374] [2022-11-25 15:43:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273076374] [2022-11-25 15:43:43,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273076374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:43,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:43,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:43:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140050447] [2022-11-25 15:43:43,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:43,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:43:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:43:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:43:43,271 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:43,361 INFO L93 Difference]: Finished difference Result 1722 states and 3274 transitions. [2022-11-25 15:43:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:43:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-25 15:43:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:43,380 INFO L225 Difference]: With dead ends: 1722 [2022-11-25 15:43:43,381 INFO L226 Difference]: Without dead ends: 806 [2022-11-25 15:43:43,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:43:43,401 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:43,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-25 15:43:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2022-11-25 15:43:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2022-11-25 15:43:43,490 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2022-11-25 15:43:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:43,491 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2022-11-25 15:43:43,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2022-11-25 15:43:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 15:43:43,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:43,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:43:43,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2022-11-25 15:43:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:43,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125033669] [2022-11-25 15:43:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:43,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:43,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125033669] [2022-11-25 15:43:43,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125033669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:43,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:43,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:43,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979190653] [2022-11-25 15:43:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:43,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:43,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:43,713 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:43,845 INFO L93 Difference]: Finished difference Result 870 states and 1622 transitions. [2022-11-25 15:43:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:43:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-25 15:43:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:43,851 INFO L225 Difference]: With dead ends: 870 [2022-11-25 15:43:43,851 INFO L226 Difference]: Without dead ends: 836 [2022-11-25 15:43:43,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:43:43,855 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 49 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6059 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:43,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6059 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-25 15:43:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 806. [2022-11-25 15:43:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2022-11-25 15:43:43,882 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2022-11-25 15:43:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:43,882 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2022-11-25 15:43:43,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2022-11-25 15:43:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 15:43:43,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:43,884 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] [2022-11-25 15:43:43,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:43:43,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2022-11-25 15:43:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:43,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619511445] [2022-11-25 15:43:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:44,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619511445] [2022-11-25 15:43:44,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619511445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:44,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:44,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:44,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280569822] [2022-11-25 15:43:44,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:44,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:44,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:44,142 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:44,283 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2022-11-25 15:43:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:43:44,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-25 15:43:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:44,290 INFO L225 Difference]: With dead ends: 986 [2022-11-25 15:43:44,291 INFO L226 Difference]: Without dead ends: 956 [2022-11-25 15:43:44,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:43:44,293 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:44,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:43:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-25 15:43:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2022-11-25 15:43:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2022-11-25 15:43:44,316 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2022-11-25 15:43:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:44,317 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2022-11-25 15:43:44,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2022-11-25 15:43:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 15:43:44,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:44,319 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] [2022-11-25 15:43:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:43:44,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2022-11-25 15:43:44,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:44,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176922087] [2022-11-25 15:43:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:44,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:44,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176922087] [2022-11-25 15:43:44,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176922087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:44,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:44,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831984872] [2022-11-25 15:43:44,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:44,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:44,391 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:44,426 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2022-11-25 15:43:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:44,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-25 15:43:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:44,430 INFO L225 Difference]: With dead ends: 939 [2022-11-25 15:43:44,431 INFO L226 Difference]: Without dead ends: 881 [2022-11-25 15:43:44,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:44,433 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:44,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-25 15:43:44,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2022-11-25 15:43:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2022-11-25 15:43:44,456 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2022-11-25 15:43:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:44,456 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2022-11-25 15:43:44,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2022-11-25 15:43:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 15:43:44,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:44,458 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] [2022-11-25 15:43:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:43:44,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2022-11-25 15:43:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072686981] [2022-11-25 15:43:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:44,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072686981] [2022-11-25 15:43:44,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072686981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:44,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:44,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399261600] [2022-11-25 15:43:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:44,632 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:44,737 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2022-11-25 15:43:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:43:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-25 15:43:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:44,741 INFO L225 Difference]: With dead ends: 984 [2022-11-25 15:43:44,742 INFO L226 Difference]: Without dead ends: 881 [2022-11-25 15:43:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:43:44,745 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:44,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-25 15:43:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2022-11-25 15:43:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2022-11-25 15:43:44,776 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2022-11-25 15:43:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:44,781 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2022-11-25 15:43:44,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2022-11-25 15:43:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 15:43:44,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:44,788 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] [2022-11-25 15:43:44,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:43:44,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2022-11-25 15:43:44,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:44,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537481837] [2022-11-25 15:43:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:45,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:45,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537481837] [2022-11-25 15:43:45,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537481837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:45,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:45,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653313067] [2022-11-25 15:43:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:45,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:45,032 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:45,151 INFO L93 Difference]: Finished difference Result 979 states and 1765 transitions. [2022-11-25 15:43:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:43:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-25 15:43:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:45,156 INFO L225 Difference]: With dead ends: 979 [2022-11-25 15:43:45,157 INFO L226 Difference]: Without dead ends: 977 [2022-11-25 15:43:45,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:43:45,162 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 112 mSDsluCounter, 4526 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:45,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6072 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-25 15:43:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 885. [2022-11-25 15:43:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2022-11-25 15:43:45,191 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2022-11-25 15:43:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:45,192 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2022-11-25 15:43:45,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2022-11-25 15:43:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 15:43:45,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:45,195 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] [2022-11-25 15:43:45,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:43:45,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2022-11-25 15:43:45,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:45,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451140466] [2022-11-25 15:43:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:45,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:45,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:45,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451140466] [2022-11-25 15:43:45,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451140466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:45,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:45,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:45,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423295643] [2022-11-25 15:43:45,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:45,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:45,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:45,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:45,263 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:45,300 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2022-11-25 15:43:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:45,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-25 15:43:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:45,305 INFO L225 Difference]: With dead ends: 1007 [2022-11-25 15:43:45,305 INFO L226 Difference]: Without dead ends: 943 [2022-11-25 15:43:45,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:45,308 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:45,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-25 15:43:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2022-11-25 15:43:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2022-11-25 15:43:45,388 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2022-11-25 15:43:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:45,388 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2022-11-25 15:43:45,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2022-11-25 15:43:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 15:43:45,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:45,389 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] [2022-11-25 15:43:45,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:43:45,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2022-11-25 15:43:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:45,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263229033] [2022-11-25 15:43:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:45,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:45,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263229033] [2022-11-25 15:43:45,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263229033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:45,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:45,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771030724] [2022-11-25 15:43:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:45,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:45,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:45,434 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:45,485 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2022-11-25 15:43:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:45,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-25 15:43:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:45,490 INFO L225 Difference]: With dead ends: 1243 [2022-11-25 15:43:45,490 INFO L226 Difference]: Without dead ends: 1080 [2022-11-25 15:43:45,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:45,492 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:45,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-25 15:43:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2022-11-25 15:43:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2022-11-25 15:43:45,535 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2022-11-25 15:43:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:45,536 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2022-11-25 15:43:45,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2022-11-25 15:43:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 15:43:45,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:45,537 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] [2022-11-25 15:43:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:43:45,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2022-11-25 15:43:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:45,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76083234] [2022-11-25 15:43:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:45,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:45,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76083234] [2022-11-25 15:43:45,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76083234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:45,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:45,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:45,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643507966] [2022-11-25 15:43:45,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:45,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:45,579 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:45,656 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2022-11-25 15:43:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-25 15:43:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:45,662 INFO L225 Difference]: With dead ends: 1630 [2022-11-25 15:43:45,662 INFO L226 Difference]: Without dead ends: 1330 [2022-11-25 15:43:45,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:45,664 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-11-25 15:43:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2022-11-25 15:43:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2022-11-25 15:43:45,734 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2022-11-25 15:43:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:45,735 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2022-11-25 15:43:45,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2022-11-25 15:43:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:43:45,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:45,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:43:45,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2022-11-25 15:43:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:45,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562535138] [2022-11-25 15:43:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:43:45,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:45,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562535138] [2022-11-25 15:43:45,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562535138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:45,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:45,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437278309] [2022-11-25 15:43:45,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:45,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:45,838 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:46,154 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2022-11-25 15:43:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:43:46,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:43:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:46,165 INFO L225 Difference]: With dead ends: 2960 [2022-11-25 15:43:46,165 INFO L226 Difference]: Without dead ends: 2558 [2022-11-25 15:43:46,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:43:46,167 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 3039 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:46,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2022-11-25 15:43:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2022-11-25 15:43:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2022-11-25 15:43:46,350 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2022-11-25 15:43:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:46,351 INFO L495 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2022-11-25 15:43:46,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2022-11-25 15:43:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:43:46,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:46,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:46,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:43:46,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2022-11-25 15:43:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:46,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665660652] [2022-11-25 15:43:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:43:46,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:46,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665660652] [2022-11-25 15:43:46,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665660652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:46,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:46,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558114205] [2022-11-25 15:43:46,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:46,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:46,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:46,484 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:46,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:46,912 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2022-11-25 15:43:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:43:46,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:43:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:46,924 INFO L225 Difference]: With dead ends: 3508 [2022-11-25 15:43:46,925 INFO L226 Difference]: Without dead ends: 2958 [2022-11-25 15:43:46,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:43:46,930 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 3039 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:46,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3157 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:43:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-11-25 15:43:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2022-11-25 15:43:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2022-11-25 15:43:47,193 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2022-11-25 15:43:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:47,193 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2022-11-25 15:43:47,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2022-11-25 15:43:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:43:47,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:47,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:43:47,196 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2022-11-25 15:43:47,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:47,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947746681] [2022-11-25 15:43:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:47,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 15:43:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:47,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947746681] [2022-11-25 15:43:47,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947746681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:47,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:47,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:43:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448207088] [2022-11-25 15:43:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:43:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:43:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:43:47,331 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:47,706 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2022-11-25 15:43:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:43:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:43:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:47,719 INFO L225 Difference]: With dead ends: 4056 [2022-11-25 15:43:47,719 INFO L226 Difference]: Without dead ends: 3506 [2022-11-25 15:43:47,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:43:47,722 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:47,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2022-11-25 15:43:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2022-11-25 15:43:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2022-11-25 15:43:48,012 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2022-11-25 15:43:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:48,012 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2022-11-25 15:43:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2022-11-25 15:43:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:43:48,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:48,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:48,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:43:48,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2022-11-25 15:43:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:48,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921087706] [2022-11-25 15:43:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:48,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921087706] [2022-11-25 15:43:48,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921087706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:48,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:48,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:48,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728994143] [2022-11-25 15:43:48,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:48,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:48,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:48,098 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:48,382 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2022-11-25 15:43:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:48,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 15:43:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:48,394 INFO L225 Difference]: With dead ends: 5424 [2022-11-25 15:43:48,394 INFO L226 Difference]: Without dead ends: 3102 [2022-11-25 15:43:48,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:48,398 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:48,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-11-25 15:43:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2022-11-25 15:43:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2022-11-25 15:43:48,716 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2022-11-25 15:43:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:48,716 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2022-11-25 15:43:48,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2022-11-25 15:43:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:43:48,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:48,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:48,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:43:48,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2022-11-25 15:43:48,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:48,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580209808] [2022-11-25 15:43:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:48,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:48,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580209808] [2022-11-25 15:43:48,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580209808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:48,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:48,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:48,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912725392] [2022-11-25 15:43:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:48,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:48,801 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:48,961 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2022-11-25 15:43:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 15:43:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:48,970 INFO L225 Difference]: With dead ends: 4019 [2022-11-25 15:43:48,971 INFO L226 Difference]: Without dead ends: 1697 [2022-11-25 15:43:48,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:48,975 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:48,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2022-11-25 15:43:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2022-11-25 15:43:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2022-11-25 15:43:49,093 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2022-11-25 15:43:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:49,094 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2022-11-25 15:43:49,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2022-11-25 15:43:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 15:43:49,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:49,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:49,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:43:49,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:49,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2022-11-25 15:43:49,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:49,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570581346] [2022-11-25 15:43:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:49,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:49,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570581346] [2022-11-25 15:43:49,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570581346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:49,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:49,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:43:49,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317133671] [2022-11-25 15:43:49,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:49,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:49,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:49,205 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:49,286 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2022-11-25 15:43:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:49,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-25 15:43:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:49,305 INFO L225 Difference]: With dead ends: 2143 [2022-11-25 15:43:49,305 INFO L226 Difference]: Without dead ends: 1241 [2022-11-25 15:43:49,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:49,307 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:49,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:43:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-11-25 15:43:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2022-11-25 15:43:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2022-11-25 15:43:49,397 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2022-11-25 15:43:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:49,397 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2022-11-25 15:43:49,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2022-11-25 15:43:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 15:43:49,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:49,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:49,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:43:49,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2022-11-25 15:43:49,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:49,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282857013] [2022-11-25 15:43:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:43:49,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:49,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282857013] [2022-11-25 15:43:49,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282857013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:43:49,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544621988] [2022-11-25 15:43:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:49,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:43:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:43:49,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:43:49,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:43:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:49,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:43:49,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:43:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:43:49,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:43:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:43:50,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544621988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:43:50,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:43:50,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-11-25 15:43:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149350627] [2022-11-25 15:43:50,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:43:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:43:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:43:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:43:50,214 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:50,507 INFO L93 Difference]: Finished difference Result 2301 states and 3470 transitions. [2022-11-25 15:43:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:43:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-25 15:43:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:50,513 INFO L225 Difference]: With dead ends: 2301 [2022-11-25 15:43:50,513 INFO L226 Difference]: Without dead ends: 1849 [2022-11-25 15:43:50,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:43:50,515 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 2974 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:50,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 4697 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:43:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-11-25 15:43:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1794. [2022-11-25 15:43:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1792 states have (on average 1.5385044642857142) internal successors, (2757), 1793 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2757 transitions. [2022-11-25 15:43:50,689 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2757 transitions. Word has length 59 [2022-11-25 15:43:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:50,689 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2757 transitions. [2022-11-25 15:43:50,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2757 transitions. [2022-11-25 15:43:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 15:43:50,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:50,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:50,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:43:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 15:43:50,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2022-11-25 15:43:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:50,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191165502] [2022-11-25 15:43:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:50,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:51,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191165502] [2022-11-25 15:43:51,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191165502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:43:51,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981736859] [2022-11-25 15:43:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:51,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:43:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:43:51,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:43:51,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:43:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:51,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:43:51,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:43:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:52,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:43:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:53,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981736859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:43:53,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:43:53,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-25 15:43:53,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413382480] [2022-11-25 15:43:53,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:43:53,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 15:43:53,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 15:43:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-25 15:43:53,564 INFO L87 Difference]: Start difference. First operand 1794 states and 2757 transitions. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:58,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:58,037 INFO L93 Difference]: Finished difference Result 7975 states and 10671 transitions. [2022-11-25 15:43:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-25 15:43:58,038 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-25 15:43:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:58,054 INFO L225 Difference]: With dead ends: 7975 [2022-11-25 15:43:58,054 INFO L226 Difference]: Without dead ends: 6989 [2022-11-25 15:43:58,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=687, Invalid=2735, Unknown=0, NotChecked=0, Total=3422 [2022-11-25 15:43:58,059 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 17475 mSDsluCounter, 8242 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17475 SdHoareTripleChecker+Valid, 9774 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:58,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17475 Valid, 9774 Invalid, 836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 15:43:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2022-11-25 15:43:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 4503. [2022-11-25 15:43:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 4501 states have (on average 1.3548100422128415) internal successors, (6098), 4502 states have internal predecessors, (6098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 6098 transitions. [2022-11-25 15:43:58,761 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 6098 transitions. Word has length 60 [2022-11-25 15:43:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:58,761 INFO L495 AbstractCegarLoop]: Abstraction has 4503 states and 6098 transitions. [2022-11-25 15:43:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 6098 transitions. [2022-11-25 15:43:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 15:43:58,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:58,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:58,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:43:58,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 15:43:58,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:58,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:58,969 INFO L85 PathProgramCache]: Analyzing trace with hash 858338323, now seen corresponding path program 1 times [2022-11-25 15:43:58,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:58,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637999121] [2022-11-25 15:43:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:59,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637999121] [2022-11-25 15:43:59,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637999121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:43:59,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601399151] [2022-11-25 15:43:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:43:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:43:59,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:43:59,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:43:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:59,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 15:43:59,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:00,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:01,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601399151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:01,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:44:01,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-25 15:44:01,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316167950] [2022-11-25 15:44:01,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:01,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 15:44:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 15:44:01,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-25 15:44:01,717 INFO L87 Difference]: Start difference. First operand 4503 states and 6098 transitions. Second operand has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:44:04,780 INFO L93 Difference]: Finished difference Result 13558 states and 17181 transitions. [2022-11-25 15:44:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 15:44:04,781 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-25 15:44:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:44:04,804 INFO L225 Difference]: With dead ends: 13558 [2022-11-25 15:44:04,805 INFO L226 Difference]: Without dead ends: 10600 [2022-11-25 15:44:04,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=514, Invalid=1648, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 15:44:04,812 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 7903 mSDsluCounter, 4848 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7903 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:44:04,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7903 Valid, 6350 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:44:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2022-11-25 15:44:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 8006. [2022-11-25 15:44:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8006 states, 8004 states have (on average 1.289855072463768) internal successors, (10324), 8005 states have internal predecessors, (10324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 10324 transitions. [2022-11-25 15:44:06,190 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 10324 transitions. Word has length 60 [2022-11-25 15:44:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:44:06,190 INFO L495 AbstractCegarLoop]: Abstraction has 8006 states and 10324 transitions. [2022-11-25 15:44:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 10324 transitions. [2022-11-25 15:44:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 15:44:06,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:44:06,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:44:06,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:44:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 15:44:06,398 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:44:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1824096789, now seen corresponding path program 1 times [2022-11-25 15:44:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:06,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644647269] [2022-11-25 15:44:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644647269] [2022-11-25 15:44:07,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644647269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583503233] [2022-11-25 15:44:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:07,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:07,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:44:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:07,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 15:44:07,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:09,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:11,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583503233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:11,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:44:11,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 35 [2022-11-25 15:44:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175976054] [2022-11-25 15:44:11,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 15:44:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 15:44:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 15:44:11,081 INFO L87 Difference]: Start difference. First operand 8006 states and 10324 transitions. Second operand has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:44:41,971 INFO L93 Difference]: Finished difference Result 21433 states and 26508 transitions. [2022-11-25 15:44:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-11-25 15:44:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-25 15:44:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:44:42,016 INFO L225 Difference]: With dead ends: 21433 [2022-11-25 15:44:42,017 INFO L226 Difference]: Without dead ends: 16809 [2022-11-25 15:44:42,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12252 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=5605, Invalid=25195, Unknown=0, NotChecked=0, Total=30800 [2022-11-25 15:44:42,033 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 10411 mSDsluCounter, 21590 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10411 SdHoareTripleChecker+Valid, 23154 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:44:42,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10411 Valid, 23154 Invalid, 1982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 15:44:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16809 states. [2022-11-25 15:44:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16809 to 5464. [2022-11-25 15:44:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5462 states have (on average 1.3158183815452216) internal successors, (7187), 5463 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 7187 transitions. [2022-11-25 15:44:43,500 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 7187 transitions. Word has length 61 [2022-11-25 15:44:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:44:43,501 INFO L495 AbstractCegarLoop]: Abstraction has 5464 states and 7187 transitions. [2022-11-25 15:44:43,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 7187 transitions. [2022-11-25 15:44:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 15:44:43,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:44:43,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:44:43,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 15:44:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:43,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:44:43,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 705601745, now seen corresponding path program 1 times [2022-11-25 15:44:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:43,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171719116] [2022-11-25 15:44:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:44,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171719116] [2022-11-25 15:44:44,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171719116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352403391] [2022-11-25 15:44:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:44,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:44,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:44,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:44:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 15:44:45,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:47,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:53,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352403391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:53,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:44:53,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 49 [2022-11-25 15:44:53,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613585799] [2022-11-25 15:44:53,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:53,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-25 15:44:53,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-25 15:44:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2153, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 15:44:53,023 INFO L87 Difference]: Start difference. First operand 5464 states and 7187 transitions. Second operand has 49 states, 49 states have (on average 3.2857142857142856) internal successors, (161), 49 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:59,515 INFO L93 Difference]: Finished difference Result 14193 states and 17744 transitions. [2022-11-25 15:45:59,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-11-25 15:45:59,515 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.2857142857142856) internal successors, (161), 49 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 15:45:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:59,536 INFO L225 Difference]: With dead ends: 14193 [2022-11-25 15:45:59,536 INFO L226 Difference]: Without dead ends: 11315 [2022-11-25 15:45:59,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23955 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=12593, Invalid=52687, Unknown=0, NotChecked=0, Total=65280 [2022-11-25 15:45:59,552 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 32779 mSDsluCounter, 24306 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32779 SdHoareTripleChecker+Valid, 25952 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:59,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32779 Valid, 25952 Invalid, 3297 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [200 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 15:45:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11315 states. [2022-11-25 15:46:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11315 to 5676. [2022-11-25 15:46:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5674 states have (on average 1.317412759957702) internal successors, (7475), 5675 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7475 transitions. [2022-11-25 15:46:01,184 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7475 transitions. Word has length 62 [2022-11-25 15:46:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:01,185 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 7475 transitions. [2022-11-25 15:46:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.2857142857142856) internal successors, (161), 49 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7475 transitions. [2022-11-25 15:46:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 15:46:01,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:01,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:01,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:46:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:46:01,392 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash -976439428, now seen corresponding path program 1 times [2022-11-25 15:46:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:01,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138121156] [2022-11-25 15:46:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:01,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:01,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:01,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138121156] [2022-11-25 15:46:01,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138121156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:01,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:01,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:46:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741530614] [2022-11-25 15:46:01,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:01,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:01,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:01,483 INFO L87 Difference]: Start difference. First operand 5676 states and 7475 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:07,972 INFO L93 Difference]: Finished difference Result 7180 states and 10348 transitions. [2022-11-25 15:46:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 15:46:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:07,991 INFO L225 Difference]: With dead ends: 7180 [2022-11-25 15:46:07,991 INFO L226 Difference]: Without dead ends: 6427 [2022-11-25 15:46:07,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:07,995 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 807 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:07,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 544 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 15:46:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6427 states. [2022-11-25 15:46:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6427 to 6427. [2022-11-25 15:46:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6427 states, 6425 states have (on average 1.3157976653696497) internal successors, (8454), 6426 states have internal predecessors, (8454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6427 states to 6427 states and 8454 transitions. [2022-11-25 15:46:09,764 INFO L78 Accepts]: Start accepts. Automaton has 6427 states and 8454 transitions. Word has length 63 [2022-11-25 15:46:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:09,764 INFO L495 AbstractCegarLoop]: Abstraction has 6427 states and 8454 transitions. [2022-11-25 15:46:09,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6427 states and 8454 transitions. [2022-11-25 15:46:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 15:46:09,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:09,768 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:09,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 15:46:09,768 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1644665067, now seen corresponding path program 1 times [2022-11-25 15:46:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:09,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926679374] [2022-11-25 15:46:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:11,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926679374] [2022-11-25 15:46:11,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926679374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:46:11,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503984315] [2022-11-25 15:46:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:11,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:46:11,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:46:11,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:46:11,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:46:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:11,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 15:46:11,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:46:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:12,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:46:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:18,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503984315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:46:18,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:46:18,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 15] total 41 [2022-11-25 15:46:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651050196] [2022-11-25 15:46:18,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:46:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-25 15:46:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:18,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-25 15:46:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1495, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 15:46:18,510 INFO L87 Difference]: Start difference. First operand 6427 states and 8454 transitions. Second operand has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:09,194 INFO L93 Difference]: Finished difference Result 17412 states and 21806 transitions. [2022-11-25 15:47:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-11-25 15:47:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-11-25 15:47:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:09,224 INFO L225 Difference]: With dead ends: 17412 [2022-11-25 15:47:09,225 INFO L226 Difference]: Without dead ends: 14020 [2022-11-25 15:47:09,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 163 SyntacticMatches, 13 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10433 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=4829, Invalid=25971, Unknown=0, NotChecked=0, Total=30800 [2022-11-25 15:47:09,233 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 25284 mSDsluCounter, 22967 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25284 SdHoareTripleChecker+Valid, 24630 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:09,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25284 Valid, 24630 Invalid, 2947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [217 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 15:47:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14020 states. [2022-11-25 15:47:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14020 to 5905. [2022-11-25 15:47:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5903 states have (on average 1.310350669151279) internal successors, (7735), 5904 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 7735 transitions. [2022-11-25 15:47:11,495 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 7735 transitions. Word has length 100 [2022-11-25 15:47:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:11,496 INFO L495 AbstractCegarLoop]: Abstraction has 5905 states and 7735 transitions. [2022-11-25 15:47:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 7735 transitions. [2022-11-25 15:47:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:47:11,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:11,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:11,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:47:11,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:11,711 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1392468563, now seen corresponding path program 1 times [2022-11-25 15:47:11,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:11,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495788480] [2022-11-25 15:47:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:11,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:13,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:13,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495788480] [2022-11-25 15:47:13,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495788480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:13,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878036976] [2022-11-25 15:47:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:13,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:13,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:13,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:13,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:47:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:13,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 15:47:13,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:15,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:47:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:21,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878036976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:47:21,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:47:21,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 19] total 58 [2022-11-25 15:47:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819213658] [2022-11-25 15:47:21,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:47:21,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-25 15:47:21,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-25 15:47:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3049, Unknown=0, NotChecked=0, Total=3306 [2022-11-25 15:47:21,380 INFO L87 Difference]: Start difference. First operand 5905 states and 7735 transitions. Second operand has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:04,114 INFO L93 Difference]: Finished difference Result 24516 states and 30016 transitions. [2022-11-25 15:50:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2022-11-25 15:50:04,114 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-25 15:50:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:04,150 INFO L225 Difference]: With dead ends: 24516 [2022-11-25 15:50:04,150 INFO L226 Difference]: Without dead ends: 22890 [2022-11-25 15:50:04,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 158 SyntacticMatches, 9 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51704 ImplicationChecksByTransitivity, 137.1s TimeCoverageRelationStatistics Valid=16279, Invalid=115127, Unknown=0, NotChecked=0, Total=131406 [2022-11-25 15:50:04,165 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 28353 mSDsluCounter, 45590 mSDsCounter, 0 mSdLazyCounter, 6500 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28353 SdHoareTripleChecker+Valid, 47355 SdHoareTripleChecker+Invalid, 6941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 6500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:04,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28353 Valid, 47355 Invalid, 6941 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [441 Valid, 6500 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 15:50:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22890 states. [2022-11-25 15:50:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22890 to 7305. [2022-11-25 15:50:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7305 states, 7303 states have (on average 1.2900178009037382) internal successors, (9421), 7304 states have internal predecessors, (9421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 9421 transitions. [2022-11-25 15:50:09,390 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 9421 transitions. Word has length 101 [2022-11-25 15:50:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:09,391 INFO L495 AbstractCegarLoop]: Abstraction has 7305 states and 9421 transitions. [2022-11-25 15:50:09,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 9421 transitions. [2022-11-25 15:50:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:50:09,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:09,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:09,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 15:50:09,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 15:50:09,603 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:09,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1991215373, now seen corresponding path program 1 times [2022-11-25 15:50:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:09,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104389116] [2022-11-25 15:50:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 41 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:50:10,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104389116] [2022-11-25 15:50:10,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104389116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:10,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467329600] [2022-11-25 15:50:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:10,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:10,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:10,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 15:50:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:10,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 15:50:10,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 41 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:50:12,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:50:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 41 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:50:16,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467329600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:50:16,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:50:16,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 41 [2022-11-25 15:50:16,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888630269] [2022-11-25 15:50:16,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:50:16,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-25 15:50:16,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:16,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-25 15:50:16,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2022-11-25 15:50:16,934 INFO L87 Difference]: Start difference. First operand 7305 states and 9421 transitions. Second operand has 42 states, 42 states have (on average 5.5476190476190474) internal successors, (233), 41 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:39,610 INFO L93 Difference]: Finished difference Result 20074 states and 24839 transitions. [2022-11-25 15:50:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-25 15:50:39,610 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.5476190476190474) internal successors, (233), 41 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-25 15:50:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:39,633 INFO L225 Difference]: With dead ends: 20074 [2022-11-25 15:50:39,633 INFO L226 Difference]: Without dead ends: 16192 [2022-11-25 15:50:39,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2043, Invalid=7463, Unknown=0, NotChecked=0, Total=9506 [2022-11-25 15:50:39,641 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 14518 mSDsluCounter, 23382 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14518 SdHoareTripleChecker+Valid, 24980 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:39,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14518 Valid, 24980 Invalid, 1361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 15:50:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2022-11-25 15:50:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 7305. [2022-11-25 15:50:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7305 states, 7303 states have (on average 1.2815281391209092) internal successors, (9359), 7304 states have internal predecessors, (9359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 9359 transitions. [2022-11-25 15:50:45,722 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 9359 transitions. Word has length 101 [2022-11-25 15:50:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:45,723 INFO L495 AbstractCegarLoop]: Abstraction has 7305 states and 9359 transitions. [2022-11-25 15:50:45,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.5476190476190474) internal successors, (233), 41 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 9359 transitions. [2022-11-25 15:50:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:50:45,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:45,726 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:45,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 15:50:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 15:50:45,932 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2123534827, now seen corresponding path program 1 times [2022-11-25 15:50:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786030617] [2022-11-25 15:50:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:50:47,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:47,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786030617] [2022-11-25 15:50:47,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786030617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:47,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30287619] [2022-11-25 15:50:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:47,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:47,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:47,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e65e66b-2c6f-4294-a441-3a53328d65ca/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 15:50:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 15:50:47,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:50:51,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:51:49,200 WARN L233 SmtUtils]: Spent 13.78s on a formula simplification. DAG size of input: 3132 DAG size of output: 2943 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)