./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8 --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 c49e8ae23817aa2c6b4293aba2a0dafa15622f84ed9ad9570ae0d323ad70f2e2 --- 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-e04fb08 [2022-11-16 11:12:50,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:12:50,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:12:50,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:12:50,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:12:50,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:12:50,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:12:50,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:12:50,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:12:50,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:12:50,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:12:50,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:12:50,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:12:50,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:12:50,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:12:50,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:12:50,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:12:50,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:12:50,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:12:50,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:12:50,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:12:50,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:12:50,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:12:50,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:12:50,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:12:50,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:12:50,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:12:50,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:12:50,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:12:50,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:12:50,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:12:50,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:12:50,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:12:50,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:12:50,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:12:50,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:12:50,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:12:50,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:12:50,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:12:50,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:12:50,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:12:50,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:12:50,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:12:50,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:12:50,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:12:50,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:12:50,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:12:50,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:12:50,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:12:50,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:12:50,267 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:12:50,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:12:50,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:12:50,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:12:50,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:12:50,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:12:50,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:12:50,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:12:50,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:12:50,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:12:50,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:12:50,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:12:50,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:12:50,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:12:50,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:12:50,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:12:50,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:50,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:12:50,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:12:50,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:12:50,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:12:50,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:12:50,276 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:12:50,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:12:50,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:12:50,277 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_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c49e8ae23817aa2c6b4293aba2a0dafa15622f84ed9ad9570ae0d323ad70f2e2 [2022-11-16 11:12:50,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:12:50,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:12:50,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:12:50,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:12:50,703 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:12:50,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem03_label24.c [2022-11-16 11:12:50,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/data/5e9be8267/d85af11974ae470bbc6ce2be10c1ad6c/FLAG483d9455c [2022-11-16 11:12:51,625 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:12:51,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/sv-benchmarks/c/eca-rers2012/Problem03_label24.c [2022-11-16 11:12:51,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/data/5e9be8267/d85af11974ae470bbc6ce2be10c1ad6c/FLAG483d9455c [2022-11-16 11:12:51,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/data/5e9be8267/d85af11974ae470bbc6ce2be10c1ad6c [2022-11-16 11:12:51,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:12:51,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:12:51,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:51,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:12:51,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:12:51,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284db4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51, skipping insertion in model container [2022-11-16 11:12:51,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:12:51,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:12:52,673 WARN L229 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_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/sv-benchmarks/c/eca-rers2012/Problem03_label24.c[60015,60028] [2022-11-16 11:12:52,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:52,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:12:53,091 WARN L229 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_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/sv-benchmarks/c/eca-rers2012/Problem03_label24.c[60015,60028] [2022-11-16 11:12:53,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:53,130 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:12:53,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53 WrapperNode [2022-11-16 11:12:53,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:53,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:53,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:12:53,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:12:53,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,344 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-11-16 11:12:53,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:53,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:12:53,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:12:53,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:12:53,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:12:53,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:12:53,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:12:53,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:12:53,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (1/1) ... [2022-11-16 11:12:53,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:53,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:53,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:12:53,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:12:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:12:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:12:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:12:53,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:12:53,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:12:53,779 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:12:56,396 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:12:56,423 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:12:56,425 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:12:56,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:56 BoogieIcfgContainer [2022-11-16 11:12:56,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:12:56,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:12:56,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:12:56,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:12:56,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:12:51" (1/3) ... [2022-11-16 11:12:56,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177208be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:56, skipping insertion in model container [2022-11-16 11:12:56,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:53" (2/3) ... [2022-11-16 11:12:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177208be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:56, skipping insertion in model container [2022-11-16 11:12:56,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:56" (3/3) ... [2022-11-16 11:12:56,445 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2022-11-16 11:12:56,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:12:56,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:12:56,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:56,596 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;@5782ebc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:56,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:12:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 11:12:56,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:56,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:56,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:56,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1612939027, now seen corresponding path program 1 times [2022-11-16 11:12:56,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:56,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925824371] [2022-11-16 11:12:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:56,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:58,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925824371] [2022-11-16 11:12:58,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925824371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:58,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:58,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:12:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62628746] [2022-11-16 11:12:58,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:58,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:58,132 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:59,890 INFO L93 Difference]: Finished difference Result 838 states and 1485 transitions. [2022-11-16 11:12:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:59,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2022-11-16 11:12:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:59,924 INFO L225 Difference]: With dead ends: 838 [2022-11-16 11:12:59,938 INFO L226 Difference]: Without dead ends: 458 [2022-11-16 11:12:59,943 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 [2022-11-16 11:12:59,947 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 76 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:59,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 143 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 11:13:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-16 11:13:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 447. [2022-11-16 11:13:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5919282511210762) internal successors, (710), 446 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 710 transitions. [2022-11-16 11:13:00,076 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 710 transitions. Word has length 191 [2022-11-16 11:13:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:00,078 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 710 transitions. [2022-11-16 11:13:00,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 710 transitions. [2022-11-16 11:13:00,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-16 11:13:00,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:00,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:13:00,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash 506294575, now seen corresponding path program 1 times [2022-11-16 11:13:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482711577] [2022-11-16 11:13:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:00,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:00,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482711577] [2022-11-16 11:13:00,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482711577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:00,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:00,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153805752] [2022-11-16 11:13:00,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:00,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:00,411 INFO L87 Difference]: Start difference. First operand 447 states and 710 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:01,678 INFO L93 Difference]: Finished difference Result 1298 states and 2071 transitions. [2022-11-16 11:13:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2022-11-16 11:13:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:01,684 INFO L225 Difference]: With dead ends: 1298 [2022-11-16 11:13:01,684 INFO L226 Difference]: Without dead ends: 853 [2022-11-16 11:13:01,686 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 [2022-11-16 11:13:01,688 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 214 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:01,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 194 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:13:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-16 11:13:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2022-11-16 11:13:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.386150234741784) internal successors, (1181), 852 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1181 transitions. [2022-11-16 11:13:01,782 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1181 transitions. Word has length 197 [2022-11-16 11:13:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:01,790 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1181 transitions. [2022-11-16 11:13:01,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1181 transitions. [2022-11-16 11:13:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-16 11:13:01,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:01,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:01,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:13:01,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1209811216, now seen corresponding path program 1 times [2022-11-16 11:13:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:01,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543194668] [2022-11-16 11:13:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:02,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:02,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543194668] [2022-11-16 11:13:02,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543194668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:02,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368904717] [2022-11-16 11:13:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:02,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:02,136 INFO L87 Difference]: Start difference. First operand 853 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:03,466 INFO L93 Difference]: Finished difference Result 2536 states and 3518 transitions. [2022-11-16 11:13:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:03,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 205 [2022-11-16 11:13:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:03,475 INFO L225 Difference]: With dead ends: 2536 [2022-11-16 11:13:03,475 INFO L226 Difference]: Without dead ends: 1685 [2022-11-16 11:13:03,477 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 [2022-11-16 11:13:03,478 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:03,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 93 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:13:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-11-16 11:13:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1671. [2022-11-16 11:13:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 1.3574850299401198) internal successors, (2267), 1670 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2267 transitions. [2022-11-16 11:13:03,539 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2267 transitions. Word has length 205 [2022-11-16 11:13:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:03,540 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2267 transitions. [2022-11-16 11:13:03,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2267 transitions. [2022-11-16 11:13:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-16 11:13:03,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:03,549 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:03,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:13:03,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash -886591963, now seen corresponding path program 1 times [2022-11-16 11:13:03,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:03,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737937736] [2022-11-16 11:13:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:03,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:03,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:03,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737937736] [2022-11-16 11:13:03,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737937736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:03,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:03,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:03,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770090991] [2022-11-16 11:13:03,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:03,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:03,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:03,961 INFO L87 Difference]: Start difference. First operand 1671 states and 2267 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:05,181 INFO L93 Difference]: Finished difference Result 4156 states and 5818 transitions. [2022-11-16 11:13:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:05,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 212 [2022-11-16 11:13:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:05,192 INFO L225 Difference]: With dead ends: 4156 [2022-11-16 11:13:05,192 INFO L226 Difference]: Without dead ends: 2487 [2022-11-16 11:13:05,195 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 [2022-11-16 11:13:05,196 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 235 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:05,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 407 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:13:05,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2022-11-16 11:13:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2485. [2022-11-16 11:13:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 1.2975040257648953) internal successors, (3223), 2484 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3223 transitions. [2022-11-16 11:13:05,268 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3223 transitions. Word has length 212 [2022-11-16 11:13:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:05,268 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3223 transitions. [2022-11-16 11:13:05,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3223 transitions. [2022-11-16 11:13:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-16 11:13:05,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:05,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:05,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:13:05,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2048966239, now seen corresponding path program 1 times [2022-11-16 11:13:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:05,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043568038] [2022-11-16 11:13:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:05,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043568038] [2022-11-16 11:13:05,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043568038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:05,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:05,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812852370] [2022-11-16 11:13:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:05,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:05,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:05,885 INFO L87 Difference]: Start difference. First operand 2485 states and 3223 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:07,076 INFO L93 Difference]: Finished difference Result 6196 states and 8016 transitions. [2022-11-16 11:13:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:07,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 219 [2022-11-16 11:13:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:07,092 INFO L225 Difference]: With dead ends: 6196 [2022-11-16 11:13:07,093 INFO L226 Difference]: Without dead ends: 3713 [2022-11-16 11:13:07,099 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 [2022-11-16 11:13:07,104 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 210 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:07,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 383 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:13:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-11-16 11:13:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3706. [2022-11-16 11:13:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 1.2426450742240216) internal successors, (4604), 3705 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 4604 transitions. [2022-11-16 11:13:07,277 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 4604 transitions. Word has length 219 [2022-11-16 11:13:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:07,280 INFO L495 AbstractCegarLoop]: Abstraction has 3706 states and 4604 transitions. [2022-11-16 11:13:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 4604 transitions. [2022-11-16 11:13:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-16 11:13:07,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:07,298 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:07,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:13:07,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash -248702042, now seen corresponding path program 1 times [2022-11-16 11:13:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:07,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895712927] [2022-11-16 11:13:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:07,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:07,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:07,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895712927] [2022-11-16 11:13:07,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895712927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:07,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:07,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355866914] [2022-11-16 11:13:07,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:07,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:07,954 INFO L87 Difference]: Start difference. First operand 3706 states and 4604 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:09,954 INFO L93 Difference]: Finished difference Result 8035 states and 10014 transitions. [2022-11-16 11:13:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:09,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-16 11:13:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:09,969 INFO L225 Difference]: With dead ends: 8035 [2022-11-16 11:13:09,970 INFO L226 Difference]: Without dead ends: 4331 [2022-11-16 11:13:09,974 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 [2022-11-16 11:13:09,975 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 443 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:09,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 169 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 11:13:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2022-11-16 11:13:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 3706. [2022-11-16 11:13:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 1.2426450742240216) internal successors, (4604), 3705 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 4604 transitions. [2022-11-16 11:13:10,077 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 4604 transitions. Word has length 235 [2022-11-16 11:13:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:10,078 INFO L495 AbstractCegarLoop]: Abstraction has 3706 states and 4604 transitions. [2022-11-16 11:13:10,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 4604 transitions. [2022-11-16 11:13:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-16 11:13:10,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:10,088 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:10,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:13:10,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash -732544997, now seen corresponding path program 1 times [2022-11-16 11:13:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:10,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270625592] [2022-11-16 11:13:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:13:10,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:10,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270625592] [2022-11-16 11:13:10,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270625592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:10,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003752069] [2022-11-16 11:13:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:10,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:10,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:13:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:11,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:11,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:13:11,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:11,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003752069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:11,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:11,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:13:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058294620] [2022-11-16 11:13:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:11,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:11,448 INFO L87 Difference]: Start difference. First operand 3706 states and 4604 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:12,726 INFO L93 Difference]: Finished difference Result 7424 states and 9234 transitions. [2022-11-16 11:13:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 242 [2022-11-16 11:13:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:12,741 INFO L225 Difference]: With dead ends: 7424 [2022-11-16 11:13:12,741 INFO L226 Difference]: Without dead ends: 3720 [2022-11-16 11:13:12,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:12,747 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:12,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 380 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:13:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2022-11-16 11:13:12,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 3706. [2022-11-16 11:13:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 1.2272604588394063) internal successors, (4547), 3705 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 4547 transitions. [2022-11-16 11:13:12,831 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 4547 transitions. Word has length 242 [2022-11-16 11:13:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 3706 states and 4547 transitions. [2022-11-16 11:13:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 4547 transitions. [2022-11-16 11:13:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-16 11:13:12,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:12,843 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:12,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:13,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:13:13,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2076061017, now seen corresponding path program 1 times [2022-11-16 11:13:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:13,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563500057] [2022-11-16 11:13:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:13:13,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:13,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563500057] [2022-11-16 11:13:13,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563500057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:13,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:13,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:13,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477285973] [2022-11-16 11:13:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:13,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:13,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:13,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:13,701 INFO L87 Difference]: Start difference. First operand 3706 states and 4547 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:15,074 INFO L93 Difference]: Finished difference Result 10880 states and 13377 transitions. [2022-11-16 11:13:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:15,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 245 [2022-11-16 11:13:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:15,103 INFO L225 Difference]: With dead ends: 10880 [2022-11-16 11:13:15,103 INFO L226 Difference]: Without dead ends: 7379 [2022-11-16 11:13:15,108 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 [2022-11-16 11:13:15,109 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 216 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:15,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 195 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:13:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7379 states. [2022-11-16 11:13:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7379 to 7373. [2022-11-16 11:13:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7373 states, 7372 states have (on average 1.2006239826370049) internal successors, (8851), 7372 states have internal predecessors, (8851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 8851 transitions. [2022-11-16 11:13:15,286 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 8851 transitions. Word has length 245 [2022-11-16 11:13:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:15,287 INFO L495 AbstractCegarLoop]: Abstraction has 7373 states and 8851 transitions. [2022-11-16 11:13:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 8851 transitions. [2022-11-16 11:13:15,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-16 11:13:15,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:15,305 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:15,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:13:15,305 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 431020011, now seen corresponding path program 1 times [2022-11-16 11:13:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:15,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946147718] [2022-11-16 11:13:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:13:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:15,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946147718] [2022-11-16 11:13:15,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946147718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:15,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:15,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295585059] [2022-11-16 11:13:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:15,631 INFO L87 Difference]: Start difference. First operand 7373 states and 8851 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:16,864 INFO L93 Difference]: Finished difference Result 19638 states and 23687 transitions. [2022-11-16 11:13:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:16,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 258 [2022-11-16 11:13:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:16,927 INFO L225 Difference]: With dead ends: 19638 [2022-11-16 11:13:16,927 INFO L226 Difference]: Without dead ends: 12673 [2022-11-16 11:13:16,937 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 [2022-11-16 11:13:16,941 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:16,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 182 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:13:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12673 states. [2022-11-16 11:13:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12673 to 12059. [2022-11-16 11:13:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12059 states, 12058 states have (on average 1.1799635097031016) internal successors, (14228), 12058 states have internal predecessors, (14228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 14228 transitions. [2022-11-16 11:13:17,249 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 14228 transitions. Word has length 258 [2022-11-16 11:13:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:17,249 INFO L495 AbstractCegarLoop]: Abstraction has 12059 states and 14228 transitions. [2022-11-16 11:13:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 14228 transitions. [2022-11-16 11:13:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-16 11:13:17,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:17,274 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:13:17,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:17,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1265310920, now seen corresponding path program 1 times [2022-11-16 11:13:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:17,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431952592] [2022-11-16 11:13:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:17,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:13:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431952592] [2022-11-16 11:13:17,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431952592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:17,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278527711] [2022-11-16 11:13:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:17,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:17,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:13:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:13:18,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:18,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:18,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278527711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:18,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:18,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:13:18,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519830277] [2022-11-16 11:13:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:18,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:18,321 INFO L87 Difference]: Start difference. First operand 12059 states and 14228 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:19,604 INFO L93 Difference]: Finished difference Result 27575 states and 32803 transitions. [2022-11-16 11:13:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 263 [2022-11-16 11:13:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:19,634 INFO L225 Difference]: With dead ends: 27575 [2022-11-16 11:13:19,635 INFO L226 Difference]: Without dead ends: 15924 [2022-11-16 11:13:19,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:19,648 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 214 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:19,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 395 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:13:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2022-11-16 11:13:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15714. [2022-11-16 11:13:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15714 states, 15713 states have (on average 1.1718958823903773) internal successors, (18414), 15713 states have internal predecessors, (18414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15714 states to 15714 states and 18414 transitions. [2022-11-16 11:13:20,055 INFO L78 Accepts]: Start accepts. Automaton has 15714 states and 18414 transitions. Word has length 263 [2022-11-16 11:13:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:20,055 INFO L495 AbstractCegarLoop]: Abstraction has 15714 states and 18414 transitions. [2022-11-16 11:13:20,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 15714 states and 18414 transitions. [2022-11-16 11:13:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-16 11:13:20,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:20,095 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:20,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:20,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:20,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 248350657, now seen corresponding path program 1 times [2022-11-16 11:13:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:20,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206931239] [2022-11-16 11:13:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 11:13:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:20,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206931239] [2022-11-16 11:13:20,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206931239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:20,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458604436] [2022-11-16 11:13:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:20,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:20,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:20,805 INFO L87 Difference]: Start difference. First operand 15714 states and 18414 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:22,279 INFO L93 Difference]: Finished difference Result 32410 states and 38216 transitions. [2022-11-16 11:13:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:22,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 270 [2022-11-16 11:13:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:22,312 INFO L225 Difference]: With dead ends: 32410 [2022-11-16 11:13:22,313 INFO L226 Difference]: Without dead ends: 17104 [2022-11-16 11:13:22,327 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 [2022-11-16 11:13:22,328 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 461 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:22,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 54 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:13:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2022-11-16 11:13:22,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 17098. [2022-11-16 11:13:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17098 states, 17097 states have (on average 1.1435924431186757) internal successors, (19552), 17097 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17098 states to 17098 states and 19552 transitions. [2022-11-16 11:13:22,615 INFO L78 Accepts]: Start accepts. Automaton has 17098 states and 19552 transitions. Word has length 270 [2022-11-16 11:13:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:22,615 INFO L495 AbstractCegarLoop]: Abstraction has 17098 states and 19552 transitions. [2022-11-16 11:13:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 17098 states and 19552 transitions. [2022-11-16 11:13:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-16 11:13:22,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:22,637 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:22,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:13:22,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:22,639 INFO L85 PathProgramCache]: Analyzing trace with hash -173040566, now seen corresponding path program 1 times [2022-11-16 11:13:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:22,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312908422] [2022-11-16 11:13:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:22,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:23,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312908422] [2022-11-16 11:13:23,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312908422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:23,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:23,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686370447] [2022-11-16 11:13:23,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:23,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:23,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:23,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:23,156 INFO L87 Difference]: Start difference. First operand 17098 states and 19552 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:24,338 INFO L93 Difference]: Finished difference Result 39697 states and 45615 transitions. [2022-11-16 11:13:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:24,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 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 272 [2022-11-16 11:13:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:24,384 INFO L225 Difference]: With dead ends: 39697 [2022-11-16 11:13:24,384 INFO L226 Difference]: Without dead ends: 23007 [2022-11-16 11:13:24,403 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 [2022-11-16 11:13:24,404 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 160 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:24,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 120 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:13:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23007 states. [2022-11-16 11:13:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23007 to 21168. [2022-11-16 11:13:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21168 states, 21167 states have (on average 1.1587849010251807) internal successors, (24528), 21167 states have internal predecessors, (24528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21168 states to 21168 states and 24528 transitions. [2022-11-16 11:13:24,872 INFO L78 Accepts]: Start accepts. Automaton has 21168 states and 24528 transitions. Word has length 272 [2022-11-16 11:13:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:24,873 INFO L495 AbstractCegarLoop]: Abstraction has 21168 states and 24528 transitions. [2022-11-16 11:13:24,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 21168 states and 24528 transitions. [2022-11-16 11:13:24,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-16 11:13:24,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:24,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:13:24,902 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:24,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1627384814, now seen corresponding path program 1 times [2022-11-16 11:13:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:24,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816865787] [2022-11-16 11:13:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:24,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:25,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816865787] [2022-11-16 11:13:25,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816865787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:25,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:25,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098148602] [2022-11-16 11:13:25,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:25,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:25,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:25,518 INFO L87 Difference]: Start difference. First operand 21168 states and 24528 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:27,457 INFO L93 Difference]: Finished difference Result 42549 states and 49384 transitions. [2022-11-16 11:13:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:13:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 299 [2022-11-16 11:13:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:27,490 INFO L225 Difference]: With dead ends: 42549 [2022-11-16 11:13:27,490 INFO L226 Difference]: Without dead ends: 21589 [2022-11-16 11:13:27,506 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 [2022-11-16 11:13:27,507 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 337 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:27,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 82 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 11:13:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2022-11-16 11:13:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 20970. [2022-11-16 11:13:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20970 states, 20969 states have (on average 1.1048214030235108) internal successors, (23167), 20969 states have internal predecessors, (23167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20970 states to 20970 states and 23167 transitions. [2022-11-16 11:13:27,884 INFO L78 Accepts]: Start accepts. Automaton has 20970 states and 23167 transitions. Word has length 299 [2022-11-16 11:13:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:27,885 INFO L495 AbstractCegarLoop]: Abstraction has 20970 states and 23167 transitions. [2022-11-16 11:13:27,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 20970 states and 23167 transitions. [2022-11-16 11:13:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 11:13:27,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:27,904 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:13:27,905 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1060174133, now seen corresponding path program 1 times [2022-11-16 11:13:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:27,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752460130] [2022-11-16 11:13:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-16 11:13:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:28,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752460130] [2022-11-16 11:13:28,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752460130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:28,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:28,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423841097] [2022-11-16 11:13:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:28,651 INFO L87 Difference]: Start difference. First operand 20970 states and 23167 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:29,717 INFO L93 Difference]: Finished difference Result 49680 states and 54997 transitions. [2022-11-16 11:13:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:29,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 302 [2022-11-16 11:13:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:29,747 INFO L225 Difference]: With dead ends: 49680 [2022-11-16 11:13:29,747 INFO L226 Difference]: Without dead ends: 29527 [2022-11-16 11:13:29,761 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 [2022-11-16 11:13:29,762 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 200 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:29,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 110 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29527 states. [2022-11-16 11:13:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29527 to 29513. [2022-11-16 11:13:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29513 states, 29512 states have (on average 1.1052114394144754) internal successors, (32617), 29512 states have internal predecessors, (32617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29513 states to 29513 states and 32617 transitions. [2022-11-16 11:13:30,338 INFO L78 Accepts]: Start accepts. Automaton has 29513 states and 32617 transitions. Word has length 302 [2022-11-16 11:13:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 29513 states and 32617 transitions. [2022-11-16 11:13:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 29513 states and 32617 transitions. [2022-11-16 11:13:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-16 11:13:30,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:30,360 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:30,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:13:30,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash -62170086, now seen corresponding path program 1 times [2022-11-16 11:13:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:30,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132252985] [2022-11-16 11:13:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-16 11:13:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:30,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132252985] [2022-11-16 11:13:30,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132252985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:30,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245037376] [2022-11-16 11:13:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:30,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:30,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:30,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:31,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:13:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:31,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:31,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 11:13:31,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:31,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245037376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:31,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:31,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:13:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287804787] [2022-11-16 11:13:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:31,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:31,776 INFO L87 Difference]: Start difference. First operand 29513 states and 32617 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:32,821 INFO L93 Difference]: Finished difference Result 55772 states and 61603 transitions. [2022-11-16 11:13:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:32,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 317 [2022-11-16 11:13:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:32,859 INFO L225 Difference]: With dead ends: 55772 [2022-11-16 11:13:32,860 INFO L226 Difference]: Without dead ends: 28500 [2022-11-16 11:13:32,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:32,881 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 66 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:32,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 80 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:13:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28500 states. [2022-11-16 11:13:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28500 to 27075. [2022-11-16 11:13:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27075 states, 27074 states have (on average 1.0923395139247987) internal successors, (29574), 27074 states have internal predecessors, (29574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27075 states to 27075 states and 29574 transitions. [2022-11-16 11:13:33,268 INFO L78 Accepts]: Start accepts. Automaton has 27075 states and 29574 transitions. Word has length 317 [2022-11-16 11:13:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:33,269 INFO L495 AbstractCegarLoop]: Abstraction has 27075 states and 29574 transitions. [2022-11-16 11:13:33,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 27075 states and 29574 transitions. [2022-11-16 11:13:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-16 11:13:33,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:33,360 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:33,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:33,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:13:33,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -557618489, now seen corresponding path program 1 times [2022-11-16 11:13:33,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:33,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571452119] [2022-11-16 11:13:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-16 11:13:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:34,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571452119] [2022-11-16 11:13:34,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571452119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:34,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:34,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882755871] [2022-11-16 11:13:34,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:34,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:34,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:34,338 INFO L87 Difference]: Start difference. First operand 27075 states and 29574 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:35,551 INFO L93 Difference]: Finished difference Result 56799 states and 62087 transitions. [2022-11-16 11:13:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 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 321 [2022-11-16 11:13:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:35,586 INFO L225 Difference]: With dead ends: 56799 [2022-11-16 11:13:35,586 INFO L226 Difference]: Without dead ends: 33389 [2022-11-16 11:13:35,604 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 [2022-11-16 11:13:35,605 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 212 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:35,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 117 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33389 states. [2022-11-16 11:13:36,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33389 to 33386. [2022-11-16 11:13:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33386 states, 33385 states have (on average 1.0907293694773101) internal successors, (36414), 33385 states have internal predecessors, (36414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33386 states to 33386 states and 36414 transitions. [2022-11-16 11:13:36,092 INFO L78 Accepts]: Start accepts. Automaton has 33386 states and 36414 transitions. Word has length 321 [2022-11-16 11:13:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:36,092 INFO L495 AbstractCegarLoop]: Abstraction has 33386 states and 36414 transitions. [2022-11-16 11:13:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 33386 states and 36414 transitions. [2022-11-16 11:13:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-16 11:13:36,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:36,118 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:36,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:13:36,118 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1947026288, now seen corresponding path program 1 times [2022-11-16 11:13:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:36,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199388518] [2022-11-16 11:13:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 203 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:13:36,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199388518] [2022-11-16 11:13:36,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199388518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858927353] [2022-11-16 11:13:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:36,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:36,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:36,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:36,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:13:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:37,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:37,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 11:13:37,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:37,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858927353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:37,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:37,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-16 11:13:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150085972] [2022-11-16 11:13:37,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:37,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:37,315 INFO L87 Difference]: Start difference. First operand 33386 states and 36414 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:37,946 INFO L93 Difference]: Finished difference Result 82245 states and 89687 transitions. [2022-11-16 11:13:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 368 [2022-11-16 11:13:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:38,000 INFO L225 Difference]: With dead ends: 82245 [2022-11-16 11:13:38,000 INFO L226 Difference]: Without dead ends: 52727 [2022-11-16 11:13:38,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:38,018 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 192 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:38,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 477 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:13:38,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52727 states. [2022-11-16 11:13:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52727 to 52721. [2022-11-16 11:13:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52721 states, 52720 states have (on average 1.0886760242792108) internal successors, (57395), 52720 states have internal predecessors, (57395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52721 states to 52721 states and 57395 transitions. [2022-11-16 11:13:38,608 INFO L78 Accepts]: Start accepts. Automaton has 52721 states and 57395 transitions. Word has length 368 [2022-11-16 11:13:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:38,608 INFO L495 AbstractCegarLoop]: Abstraction has 52721 states and 57395 transitions. [2022-11-16 11:13:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 52721 states and 57395 transitions. [2022-11-16 11:13:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-16 11:13:38,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:38,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:38,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:38,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:13:38,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1100351228, now seen corresponding path program 1 times [2022-11-16 11:13:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:38,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314695354] [2022-11-16 11:13:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-16 11:13:39,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:39,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314695354] [2022-11-16 11:13:39,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314695354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:39,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161967345] [2022-11-16 11:13:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:39,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:39,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:39,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:13:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:39,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-16 11:13:40,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:40,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161967345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:40,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:40,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:13:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239096097] [2022-11-16 11:13:40,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:40,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:40,330 INFO L87 Difference]: Start difference. First operand 52721 states and 57395 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:41,409 INFO L93 Difference]: Finished difference Result 96702 states and 105524 transitions. [2022-11-16 11:13:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:41,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 409 [2022-11-16 11:13:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:41,460 INFO L225 Difference]: With dead ends: 96702 [2022-11-16 11:13:41,460 INFO L226 Difference]: Without dead ends: 45000 [2022-11-16 11:13:41,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:41,481 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 73 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:41,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 275 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:13:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45000 states. [2022-11-16 11:13:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45000 to 44174. [2022-11-16 11:13:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44174 states, 44173 states have (on average 1.0848029339189098) internal successors, (47919), 44173 states have internal predecessors, (47919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44174 states to 44174 states and 47919 transitions. [2022-11-16 11:13:42,260 INFO L78 Accepts]: Start accepts. Automaton has 44174 states and 47919 transitions. Word has length 409 [2022-11-16 11:13:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:42,261 INFO L495 AbstractCegarLoop]: Abstraction has 44174 states and 47919 transitions. [2022-11-16 11:13:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 44174 states and 47919 transitions. [2022-11-16 11:13:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-16 11:13:42,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:42,305 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:42,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:42,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:13:42,507 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1426930687, now seen corresponding path program 1 times [2022-11-16 11:13:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:42,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316231877] [2022-11-16 11:13:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:13:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316231877] [2022-11-16 11:13:43,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316231877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:43,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:43,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:13:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368821683] [2022-11-16 11:13:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:43,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:43,525 INFO L87 Difference]: Start difference. First operand 44174 states and 47919 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:44,664 INFO L93 Difference]: Finished difference Result 93844 states and 101794 transitions. [2022-11-16 11:13:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:44,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 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 499 [2022-11-16 11:13:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:44,717 INFO L225 Difference]: With dead ends: 93844 [2022-11-16 11:13:44,717 INFO L226 Difference]: Without dead ends: 50689 [2022-11-16 11:13:44,738 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 [2022-11-16 11:13:44,738 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 101 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:44,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 96 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:13:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50689 states. [2022-11-16 11:13:45,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50689 to 49464. [2022-11-16 11:13:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49464 states, 49463 states have (on average 1.0816569961385278) internal successors, (53502), 49463 states have internal predecessors, (53502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49464 states to 49464 states and 53502 transitions. [2022-11-16 11:13:45,508 INFO L78 Accepts]: Start accepts. Automaton has 49464 states and 53502 transitions. Word has length 499 [2022-11-16 11:13:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:45,509 INFO L495 AbstractCegarLoop]: Abstraction has 49464 states and 53502 transitions. [2022-11-16 11:13:45,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 49464 states and 53502 transitions. [2022-11-16 11:13:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-11-16 11:13:45,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:45,540 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:13:45,541 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 407285848, now seen corresponding path program 1 times [2022-11-16 11:13:45,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:45,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217799957] [2022-11-16 11:13:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:45,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 360 proven. 6 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-16 11:13:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:46,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217799957] [2022-11-16 11:13:46,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217799957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:46,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447578911] [2022-11-16 11:13:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:46,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:46,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:46,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:13:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:46,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:46,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-16 11:13:47,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:47,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447578911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:47,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:47,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-16 11:13:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039009290] [2022-11-16 11:13:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:47,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:47,112 INFO L87 Difference]: Start difference. First operand 49464 states and 53502 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:47,803 INFO L93 Difference]: Finished difference Result 124184 states and 134535 transitions. [2022-11-16 11:13:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:47,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 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 525 [2022-11-16 11:13:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:48,040 INFO L225 Difference]: With dead ends: 124184 [2022-11-16 11:13:48,040 INFO L226 Difference]: Without dead ends: 75738 [2022-11-16 11:13:48,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:48,078 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:48,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 474 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:13:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75738 states. [2022-11-16 11:13:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75738 to 75734. [2022-11-16 11:13:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75734 states, 75733 states have (on average 1.0836227272127077) internal successors, (82066), 75733 states have internal predecessors, (82066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75734 states to 75734 states and 82066 transitions. [2022-11-16 11:13:49,297 INFO L78 Accepts]: Start accepts. Automaton has 75734 states and 82066 transitions. Word has length 525 [2022-11-16 11:13:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:49,297 INFO L495 AbstractCegarLoop]: Abstraction has 75734 states and 82066 transitions. [2022-11-16 11:13:49,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 75734 states and 82066 transitions. [2022-11-16 11:13:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-16 11:13:49,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:49,351 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:49,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:49,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:49,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash -56149388, now seen corresponding path program 1 times [2022-11-16 11:13:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:49,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502555316] [2022-11-16 11:13:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:49,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-16 11:13:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502555316] [2022-11-16 11:13:50,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502555316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:50,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:50,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715524069] [2022-11-16 11:13:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:50,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:13:50,134 INFO L87 Difference]: Start difference. First operand 75734 states and 82066 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:51,527 INFO L93 Difference]: Finished difference Result 164053 states and 178186 transitions. [2022-11-16 11:13:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 536 [2022-11-16 11:13:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:51,627 INFO L225 Difference]: With dead ends: 164053 [2022-11-16 11:13:51,628 INFO L226 Difference]: Without dead ends: 94422 [2022-11-16 11:13:51,659 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 [2022-11-16 11:13:51,660 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 212 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:51,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 309 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:13:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94422 states. [2022-11-16 11:13:53,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94422 to 91769. [2022-11-16 11:13:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91769 states, 91768 states have (on average 1.07212753901142) internal successors, (98387), 91768 states have internal predecessors, (98387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91769 states to 91769 states and 98387 transitions. [2022-11-16 11:13:53,412 INFO L78 Accepts]: Start accepts. Automaton has 91769 states and 98387 transitions. Word has length 536 [2022-11-16 11:13:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:53,412 INFO L495 AbstractCegarLoop]: Abstraction has 91769 states and 98387 transitions. [2022-11-16 11:13:53,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 91769 states and 98387 transitions. [2022-11-16 11:13:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-16 11:13:53,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:53,461 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:53,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:13:53,462 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1520047896, now seen corresponding path program 1 times [2022-11-16 11:13:53,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:53,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109193272] [2022-11-16 11:13:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:53,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 392 proven. 9 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-11-16 11:13:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:54,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109193272] [2022-11-16 11:13:54,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109193272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:54,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852594142] [2022-11-16 11:13:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:54,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:54,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:54,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:54,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:13:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:55,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:55,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-16 11:13:55,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852594142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:55,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:55,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:13:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79864740] [2022-11-16 11:13:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:55,253 INFO L87 Difference]: Start difference. First operand 91769 states and 98387 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:56,562 INFO L93 Difference]: Finished difference Result 223977 states and 240295 transitions. [2022-11-16 11:13:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 542 [2022-11-16 11:13:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:56,738 INFO L225 Difference]: With dead ends: 223977 [2022-11-16 11:13:56,739 INFO L226 Difference]: Without dead ends: 136278 [2022-11-16 11:13:56,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:56,781 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 214 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:56,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 694 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:13:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136278 states. [2022-11-16 11:13:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136278 to 135872. [2022-11-16 11:13:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135872 states, 135871 states have (on average 1.063987164295545) internal successors, (144565), 135871 states have internal predecessors, (144565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135872 states to 135872 states and 144565 transitions. [2022-11-16 11:13:59,015 INFO L78 Accepts]: Start accepts. Automaton has 135872 states and 144565 transitions. Word has length 542 [2022-11-16 11:13:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:59,015 INFO L495 AbstractCegarLoop]: Abstraction has 135872 states and 144565 transitions. [2022-11-16 11:13:59,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 135872 states and 144565 transitions. [2022-11-16 11:13:59,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-11-16 11:13:59,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:59,078 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:59,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:59,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:59,280 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:59,280 INFO L85 PathProgramCache]: Analyzing trace with hash -676922125, now seen corresponding path program 1 times [2022-11-16 11:13:59,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:59,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631859765] [2022-11-16 11:13:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 420 proven. 9 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-16 11:14:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631859765] [2022-11-16 11:14:00,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631859765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:00,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316682004] [2022-11-16 11:14:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:00,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:00,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:00,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:00,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:14:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:01,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:14:01,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-16 11:14:01,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:14:01,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316682004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:01,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:14:01,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:14:01,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20706733] [2022-11-16 11:14:01,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:14:01,620 INFO L87 Difference]: Start difference. First operand 135872 states and 144565 transitions. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:03,321 INFO L93 Difference]: Finished difference Result 354055 states and 377640 transitions. [2022-11-16 11:14:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 571 [2022-11-16 11:14:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:03,631 INFO L225 Difference]: With dead ends: 354055 [2022-11-16 11:14:03,631 INFO L226 Difference]: Without dead ends: 223065 [2022-11-16 11:14:03,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:14:03,695 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 160 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:03,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 757 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:14:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223065 states. [2022-11-16 11:14:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223065 to 218595. [2022-11-16 11:14:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218595 states, 218594 states have (on average 1.0600473937985488) internal successors, (231720), 218594 states have internal predecessors, (231720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218595 states to 218595 states and 231720 transitions. [2022-11-16 11:14:07,371 INFO L78 Accepts]: Start accepts. Automaton has 218595 states and 231720 transitions. Word has length 571 [2022-11-16 11:14:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:07,372 INFO L495 AbstractCegarLoop]: Abstraction has 218595 states and 231720 transitions. [2022-11-16 11:14:07,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 218595 states and 231720 transitions. [2022-11-16 11:14:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-11-16 11:14:07,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:07,513 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:07,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:07,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:14:07,715 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:14:07,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:07,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2058764165, now seen corresponding path program 1 times [2022-11-16 11:14:07,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:07,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508428091] [2022-11-16 11:14:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 451 proven. 9 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-11-16 11:14:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:09,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508428091] [2022-11-16 11:14:09,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508428091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:09,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507107328] [2022-11-16 11:14:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:09,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:09,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:14:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:09,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:14:09,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-11-16 11:14:09,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:14:09,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507107328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:09,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:14:09,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:14:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625509016] [2022-11-16 11:14:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:09,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:14:09,882 INFO L87 Difference]: Start difference. First operand 218595 states and 231720 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:12,326 INFO L93 Difference]: Finished difference Result 421135 states and 446344 transitions. [2022-11-16 11:14:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:12,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 582 [2022-11-16 11:14:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:12,587 INFO L225 Difference]: With dead ends: 421135 [2022-11-16 11:14:12,587 INFO L226 Difference]: Without dead ends: 204371 [2022-11-16 11:14:12,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:14:12,646 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 222 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 84 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:14:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204371 states. [2022-11-16 11:14:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204371 to 189331. [2022-11-16 11:14:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189331 states, 189330 states have (on average 1.050335393228754) internal successors, (198860), 189330 states have internal predecessors, (198860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189331 states to 189331 states and 198860 transitions. [2022-11-16 11:14:15,764 INFO L78 Accepts]: Start accepts. Automaton has 189331 states and 198860 transitions. Word has length 582 [2022-11-16 11:14:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:15,764 INFO L495 AbstractCegarLoop]: Abstraction has 189331 states and 198860 transitions. [2022-11-16 11:14:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 189331 states and 198860 transitions. [2022-11-16 11:14:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-11-16 11:14:15,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:15,840 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:15,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:14:16,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:16,048 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:14:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1715432020, now seen corresponding path program 1 times [2022-11-16 11:14:16,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:16,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184080161] [2022-11-16 11:14:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:16,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 708 proven. 166 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:14:19,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:19,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184080161] [2022-11-16 11:14:19,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184080161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450638454] [2022-11-16 11:14:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:19,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:19,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3d3d50-a41f-4b83-be48-14416a0bbb1d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process