./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label47.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:21:06,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:21:06,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:21:06,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:21:06,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:21:06,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:21:06,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:21:06,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:21:06,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:21:06,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:21:06,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:21:06,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:21:06,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:21:06,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:21:06,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:21:06,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:21:06,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:21:06,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:21:06,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:21:06,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:21:06,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:21:06,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:21:06,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:21:06,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:21:06,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:21:06,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:21:06,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:21:06,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:21:06,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:21:06,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:21:06,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:21:06,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:21:06,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:21:06,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:21:06,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:21:06,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:21:06,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:21:06,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:21:06,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:21:06,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:21:06,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:21:06,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:21:07,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:21:07,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:21:07,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:21:07,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:21:07,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:21:07,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:21:07,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:21:07,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:21:07,028 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:21:07,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:21:07,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:21:07,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:21:07,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:21:07,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:21:07,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:21:07,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:21:07,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:21:07,031 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:21:07,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:21:07,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:21:07,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:21:07,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:21:07,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:21:07,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:21:07,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:07,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:21:07,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:21:07,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:21:07,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:21:07,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:21:07,034 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:21:07,034 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:21:07,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:21:07,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 [2022-10-17 10:21:07,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:21:07,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:21:07,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:21:07,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:21:07,364 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:21:07,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2022-10-17 10:21:07,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/data/9d7d55d7f/7a40df7174824ce7b1647e2351820be5/FLAG89cf81e59 [2022-10-17 10:21:08,159 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:21:08,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2022-10-17 10:21:08,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/data/9d7d55d7f/7a40df7174824ce7b1647e2351820be5/FLAG89cf81e59 [2022-10-17 10:21:08,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/data/9d7d55d7f/7a40df7174824ce7b1647e2351820be5 [2022-10-17 10:21:08,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:21:08,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:21:08,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:08,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:21:08,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:21:08,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:08" (1/1) ... [2022-10-17 10:21:08,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad729fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:08, skipping insertion in model container [2022-10-17 10:21:08,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:08" (1/1) ... [2022-10-17 10:21:08,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:21:08,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:21:08,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/sv-benchmarks/c/eca-rers2012/Problem17_label47.c[6608,6621] [2022-10-17 10:21:09,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:09,460 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:21:09,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/sv-benchmarks/c/eca-rers2012/Problem17_label47.c[6608,6621] [2022-10-17 10:21:09,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:09,896 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:21:09,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09 WrapperNode [2022-10-17 10:21:09,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:09,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:09,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:21:09,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:21:09,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:09,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,283 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-10-17 10:21:10,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:10,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:21:10,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:21:10,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:21:10,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,661 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:21:10,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:21:10,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:21:10,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:21:10,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (1/1) ... [2022-10-17 10:21:10,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:10,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:21:10,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_092d586d-8017-47bc-b1e0-c29590df6f83/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:21:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:21:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:21:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:21:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:21:11,001 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:21:11,003 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:21:15,452 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:21:15,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:21:15,475 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:21:15,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:15 BoogieIcfgContainer [2022-10-17 10:21:15,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:21:15,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:21:15,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:21:15,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:21:15,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:21:08" (1/3) ... [2022-10-17 10:21:15,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3910847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:15, skipping insertion in model container [2022-10-17 10:21:15,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:09" (2/3) ... [2022-10-17 10:21:15,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3910847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:15, skipping insertion in model container [2022-10-17 10:21:15,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:15" (3/3) ... [2022-10-17 10:21:15,490 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2022-10-17 10:21:15,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:21:15,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:21:15,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:21:15,615 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;@1c210ec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:21:15,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:21:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:21:15,633 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:15,634 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] [2022-10-17 10:21:15,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-10-17 10:21:15,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:15,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018688456] [2022-10-17 10:21:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:15,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:16,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018688456] [2022-10-17 10:21:16,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018688456] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:16,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:16,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:21:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898084857] [2022-10-17 10:21:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:16,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:16,149 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:20,020 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-10-17 10:21:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:20,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-10-17 10:21:20,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:20,045 INFO L225 Difference]: With dead ends: 1644 [2022-10-17 10:21:20,046 INFO L226 Difference]: Without dead ends: 977 [2022-10-17 10:21:20,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:20,057 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 444 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:20,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-10-17 10:21:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-10-17 10:21:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-10-17 10:21:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-10-17 10:21:20,186 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 44 [2022-10-17 10:21:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:20,186 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-10-17 10:21:20,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-10-17 10:21:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 10:21:20,194 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:20,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:20,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:21:20,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1801670618, now seen corresponding path program 1 times [2022-10-17 10:21:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:20,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126118519] [2022-10-17 10:21:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:20,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:20,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126118519] [2022-10-17 10:21:20,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126118519] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:20,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:20,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:21:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132711244] [2022-10-17 10:21:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:20,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:20,475 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:23,593 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2022-10-17 10:21:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:23,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-10-17 10:21:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:23,605 INFO L225 Difference]: With dead ends: 2815 [2022-10-17 10:21:23,606 INFO L226 Difference]: Without dead ends: 1846 [2022-10-17 10:21:23,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:23,610 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:23,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-17 10:21:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-10-17 10:21:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2022-10-17 10:21:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2022-10-17 10:21:23,668 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 111 [2022-10-17 10:21:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:23,672 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2022-10-17 10:21:23,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2022-10-17 10:21:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:21:23,683 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:23,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:23,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:21:23,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash 148499438, now seen corresponding path program 1 times [2022-10-17 10:21:23,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:23,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674798093] [2022-10-17 10:21:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:24,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674798093] [2022-10-17 10:21:24,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674798093] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:24,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:24,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:21:24,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138596309] [2022-10-17 10:21:24,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:21:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:21:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:21:24,160 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:29,662 INFO L93 Difference]: Finished difference Result 5865 states and 8159 transitions. [2022-10-17 10:21:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:21:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-10-17 10:21:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:29,687 INFO L225 Difference]: With dead ends: 5865 [2022-10-17 10:21:29,687 INFO L226 Difference]: Without dead ends: 4026 [2022-10-17 10:21:29,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:21:29,692 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 938 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:29,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 440 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-10-17 10:21:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2022-10-17 10:21:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 4020. [2022-10-17 10:21:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 1.3264493655138094) internal successors, (5331), 4019 states have internal predecessors, (5331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5331 transitions. [2022-10-17 10:21:29,797 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5331 transitions. Word has length 114 [2022-10-17 10:21:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:29,798 INFO L495 AbstractCegarLoop]: Abstraction has 4020 states and 5331 transitions. [2022-10-17 10:21:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5331 transitions. [2022-10-17 10:21:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-10-17 10:21:29,801 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:29,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:29,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:21:29,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:29,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1947040115, now seen corresponding path program 1 times [2022-10-17 10:21:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:29,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143130141] [2022-10-17 10:21:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-17 10:21:30,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143130141] [2022-10-17 10:21:30,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143130141] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:30,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:30,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:21:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364318809] [2022-10-17 10:21:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:30,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:30,039 INFO L87 Difference]: Start difference. First operand 4020 states and 5331 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:32,423 INFO L93 Difference]: Finished difference Result 10602 states and 14367 transitions. [2022-10-17 10:21:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:32,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 179 [2022-10-17 10:21:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:32,460 INFO L225 Difference]: With dead ends: 10602 [2022-10-17 10:21:32,460 INFO L226 Difference]: Without dead ends: 6580 [2022-10-17 10:21:32,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:32,468 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:32,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:21:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2022-10-17 10:21:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 5301. [2022-10-17 10:21:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5300 states have (on average 1.2269811320754718) internal successors, (6503), 5300 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 6503 transitions. [2022-10-17 10:21:32,611 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 6503 transitions. Word has length 179 [2022-10-17 10:21:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:32,613 INFO L495 AbstractCegarLoop]: Abstraction has 5301 states and 6503 transitions. [2022-10-17 10:21:32,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 6503 transitions. [2022-10-17 10:21:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-10-17 10:21:32,618 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:32,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:32,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:21:32,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:32,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash 402637231, now seen corresponding path program 1 times [2022-10-17 10:21:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:32,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501360830] [2022-10-17 10:21:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:33,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501360830] [2022-10-17 10:21:33,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501360830] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:33,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:33,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:21:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563292115] [2022-10-17 10:21:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:33,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:21:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:21:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:21:33,272 INFO L87 Difference]: Start difference. First operand 5301 states and 6503 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:36,926 INFO L93 Difference]: Finished difference Result 13191 states and 16563 transitions. [2022-10-17 10:21:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:21:36,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-10-17 10:21:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:36,981 INFO L225 Difference]: With dead ends: 13191 [2022-10-17 10:21:36,981 INFO L226 Difference]: Without dead ends: 7892 [2022-10-17 10:21:36,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:21:36,990 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1659 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:36,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 834 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [947 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-10-17 10:21:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2022-10-17 10:21:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 7858. [2022-10-17 10:21:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7857 states have (on average 1.2102583683339696) internal successors, (9509), 7857 states have internal predecessors, (9509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 9509 transitions. [2022-10-17 10:21:37,177 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 9509 transitions. Word has length 192 [2022-10-17 10:21:37,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:37,179 INFO L495 AbstractCegarLoop]: Abstraction has 7858 states and 9509 transitions. [2022-10-17 10:21:37,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 9509 transitions. [2022-10-17 10:21:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-10-17 10:21:37,190 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:37,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:37,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:21:37,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1325173592, now seen corresponding path program 1 times [2022-10-17 10:21:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:37,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680570415] [2022-10-17 10:21:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat