./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 49be4ee23c057d32f8ac5e24c222fef6761d7999dc1116253007afd08a0c1660 --- 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-5e519f3 [2022-11-02 20:32:22,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:32:22,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:32:22,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:32:22,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:32:22,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:32:22,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:32:22,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:32:22,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:32:22,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:32:22,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:32:22,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:32:22,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:32:22,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:32:22,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:32:22,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:32:22,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:32:22,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:32:22,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:32:22,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:32:22,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:32:22,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:32:22,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:32:22,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:32:22,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:32:22,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:32:22,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:32:22,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:32:22,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:32:22,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:32:22,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:32:22,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:32:22,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:32:22,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:32:22,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:32:22,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:32:22,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:32:22,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:32:22,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:32:22,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:32:22,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:32:22,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:32:22,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:32:22,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:32:22,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:32:22,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:32:22,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:32:22,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:32:22,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:32:22,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:32:22,248 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:32:22,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:32:22,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:32:22,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:32:22,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:32:22,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:32:22,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:32:22,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:32:22,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:32:22,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:32:22,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:32:22,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:32:22,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:32:22,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:22,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:32:22,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:32:22,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:32:22,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:32:22,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:32:22,255 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:32:22,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:32:22,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:32:22,256 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_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49be4ee23c057d32f8ac5e24c222fef6761d7999dc1116253007afd08a0c1660 [2022-11-02 20:32:22,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:32:22,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:32:22,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:32:22,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:32:22,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:32:22,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2022-11-02 20:32:22,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/f39792831/229de12e54fd47958f69e6f6b9917fb4/FLAG1f0d82441 [2022-11-02 20:32:23,605 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:32:23,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2022-11-02 20:32:23,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/f39792831/229de12e54fd47958f69e6f6b9917fb4/FLAG1f0d82441 [2022-11-02 20:32:23,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/f39792831/229de12e54fd47958f69e6f6b9917fb4 [2022-11-02 20:32:23,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:32:23,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:32:23,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:23,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:32:23,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:32:23,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:23" (1/1) ... [2022-11-02 20:32:23,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebeadcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:23, skipping insertion in model container [2022-11-02 20:32:23,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:23" (1/1) ... [2022-11-02 20:32:23,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:32:23,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:32:24,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1107,1120] [2022-11-02 20:32:24,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:24,381 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:32:24,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1107,1120] [2022-11-02 20:32:24,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:24,517 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:32:24,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24 WrapperNode [2022-11-02 20:32:24,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:24,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:24,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:32:24,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:32:24,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,656 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 556 [2022-11-02 20:32:24,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:24,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:32:24,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:32:24,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:32:24,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,721 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:32:24,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:32:24,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:32:24,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:32:24,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (1/1) ... [2022-11-02 20:32:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:24,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:32:24,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:32:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:32:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:32:25,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:32:25,200 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:32:27,100 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:32:27,113 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:32:27,118 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:32:27,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:27 BoogieIcfgContainer [2022-11-02 20:32:27,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:32:27,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:32:27,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:32:27,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:32:27,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:32:23" (1/3) ... [2022-11-02 20:32:27,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa5f006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:27, skipping insertion in model container [2022-11-02 20:32:27,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:24" (2/3) ... [2022-11-02 20:32:27,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa5f006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:27, skipping insertion in model container [2022-11-02 20:32:27,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:27" (3/3) ... [2022-11-02 20:32:27,138 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vlunc.c [2022-11-02 20:32:27,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:32:27,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:32:27,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:32:27,274 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;@2ee839a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:32:27,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:32:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 78 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:32:27,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:27,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:32:27,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:32:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:27,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092196879] [2022-11-02 20:32:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:32:29,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:32:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:32:30,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:32:30,234 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:32:30,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:32:30,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:32:30,244 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:32:30,251 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:32:30,303 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:32:30,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:32:30 BoogieIcfgContainer [2022-11-02 20:32:30,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:32:30,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:32:30,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:32:30,332 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:32:30,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:27" (3/4) ... [2022-11-02 20:32:30,336 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:32:30,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:32:30,340 INFO L158 Benchmark]: Toolchain (without parser) took 6476.13ms. Allocated memory was 123.7MB in the beginning and 176.2MB in the end (delta: 52.4MB). Free memory was 87.6MB in the beginning and 72.3MB in the end (delta: 15.3MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2022-11-02 20:32:30,341 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 86.0MB. Free memory was 59.9MB in the beginning and 59.8MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:32:30,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 666.03ms. Allocated memory is still 123.7MB. Free memory was 87.4MB in the beginning and 90.1MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:32:30,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.08ms. Allocated memory is still 123.7MB. Free memory was 90.1MB in the beginning and 83.3MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:32:30,351 INFO L158 Benchmark]: Boogie Preprocessor took 97.76ms. Allocated memory is still 123.7MB. Free memory was 83.3MB in the beginning and 79.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:32:30,353 INFO L158 Benchmark]: RCFGBuilder took 2365.07ms. Allocated memory was 123.7MB in the beginning and 176.2MB in the end (delta: 52.4MB). Free memory was 79.1MB in the beginning and 146.3MB in the end (delta: -67.2MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:30,355 INFO L158 Benchmark]: TraceAbstraction took 3201.64ms. Allocated memory is still 176.2MB. Free memory was 145.3MB in the beginning and 72.3MB in the end (delta: 73.0MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2022-11-02 20:32:30,355 INFO L158 Benchmark]: Witness Printer took 5.77ms. Allocated memory is still 176.2MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:32:30,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 86.0MB. Free memory was 59.9MB in the beginning and 59.8MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 666.03ms. Allocated memory is still 123.7MB. Free memory was 87.4MB in the beginning and 90.1MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 124.08ms. Allocated memory is still 123.7MB. Free memory was 90.1MB in the beginning and 83.3MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.76ms. Allocated memory is still 123.7MB. Free memory was 83.3MB in the beginning and 79.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2365.07ms. Allocated memory was 123.7MB in the beginning and 176.2MB in the end (delta: 52.4MB). Free memory was 79.1MB in the beginning and 146.3MB in the end (delta: -67.2MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3201.64ms. Allocated memory is still 176.2MB. Free memory was 145.3MB in the beginning and 72.3MB in the end (delta: 73.0MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. * Witness Printer took 5.77ms. Allocated memory is still 176.2MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 206, overapproximation of bitwiseOr at line 132, overapproximation of bitwiseAnd at line 84. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 32); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (32 - 1); [L34] const SORT_1 var_6 = 0; [L35] const SORT_9 var_11 = 1; [L36] const SORT_1 var_28 = 1; [L37] const SORT_3 var_59 = 0; [L38] const SORT_3 var_62 = 27; [L39] const SORT_3 var_71 = 85; [L40] const SORT_3 var_74 = 67; [L41] const SORT_3 var_77 = 78; [L43] SORT_1 input_2; [L44] SORT_3 input_4; [L45] SORT_1 input_5; [L46] SORT_3 input_65; [L47] SORT_1 input_70; [L48] SORT_1 input_82; [L49] SORT_1 input_85; [L50] SORT_1 input_89; [L51] SORT_1 input_98; [L52] SORT_1 input_101; [L53] SORT_1 input_105; [L54] SORT_1 input_114; [L55] SORT_1 input_117; [L56] SORT_1 input_121; [L57] SORT_1 input_130; [L58] SORT_1 input_133; [L60] SORT_1 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L61] SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L62] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L63] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L64] SORT_3 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L65] SORT_3 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L67] SORT_1 init_8_arg_1 = var_6; [L68] state_7 = init_8_arg_1 [L69] SORT_1 init_14_arg_1 = var_6; [L70] state_13 = init_14_arg_1 [L71] SORT_1 init_21_arg_1 = var_6; [L72] state_20 = init_21_arg_1 [L73] SORT_1 init_30_arg_1 = var_28; [L74] state_29 = init_30_arg_1 [L75] SORT_3 init_61_arg_1 = var_59; [L76] state_60 = init_61_arg_1 [L77] SORT_3 init_69_arg_1 = var_59; [L78] state_68 = init_69_arg_1 VAL [init_14_arg_1=0, init_21_arg_1=0, init_30_arg_1=1, init_61_arg_1=0, init_69_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_3=255, mask_SORT_9=4294967295, msb_SORT_1=1, msb_SORT_3=128, msb_SORT_9=2147483648, state_13=0, state_20=0, state_29=1, state_60=0, state_68=0, state_7=0, var_11=1, var_28=1, var_59=0, var_6=0, var_62=27, var_71=85, var_74=67, var_77=78] [L81] input_2 = __VERIFIER_nondet_uchar() [L82] input_4 = __VERIFIER_nondet_uchar() [L83] input_5 = __VERIFIER_nondet_uchar() [L84] input_5 = input_5 & mask_SORT_1 [L85] input_65 = __VERIFIER_nondet_uchar() [L86] input_70 = __VERIFIER_nondet_uchar() [L87] input_82 = __VERIFIER_nondet_uchar() [L88] input_85 = __VERIFIER_nondet_uchar() [L89] input_89 = __VERIFIER_nondet_uchar() [L90] input_98 = __VERIFIER_nondet_uchar() [L91] input_101 = __VERIFIER_nondet_uchar() [L92] input_105 = __VERIFIER_nondet_uchar() [L93] input_114 = __VERIFIER_nondet_uchar() [L94] input_117 = __VERIFIER_nondet_uchar() [L95] input_121 = __VERIFIER_nondet_uchar() [L96] input_130 = __VERIFIER_nondet_uchar() [L97] input_133 = __VERIFIER_nondet_uchar() [L100] SORT_1 var_10_arg_0 = state_7; [L101] var_10_arg_0 = var_10_arg_0 & mask_SORT_1 [L102] SORT_9 var_10 = var_10_arg_0; [L103] SORT_9 var_12_arg_0 = var_10; [L104] SORT_9 var_12_arg_1 = var_11; [L105] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L106] SORT_1 var_15_arg_0 = state_13; [L107] var_15_arg_0 = var_15_arg_0 & mask_SORT_1 [L108] SORT_9 var_15 = var_15_arg_0; [L109] SORT_9 var_16_arg_0 = var_15; [L110] SORT_9 var_16_arg_1 = var_11; [L111] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L112] SORT_1 var_17_arg_0 = var_12; [L113] SORT_1 var_17_arg_1 = var_16; [L114] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L115] SORT_1 var_18_arg_0 = state_7; [L116] var_18_arg_0 = var_18_arg_0 & mask_SORT_1 [L117] SORT_9 var_18 = var_18_arg_0; [L118] SORT_9 var_19_arg_0 = var_18; [L119] SORT_9 var_19_arg_1 = var_11; [L120] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L121] SORT_1 var_22_arg_0 = state_20; [L122] var_22_arg_0 = var_22_arg_0 & mask_SORT_1 [L123] SORT_9 var_22 = var_22_arg_0; [L124] SORT_9 var_23_arg_0 = var_22; [L125] SORT_9 var_23_arg_1 = var_11; [L126] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L127] SORT_1 var_24_arg_0 = var_19; [L128] SORT_1 var_24_arg_1 = var_23; [L129] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L130] SORT_1 var_25_arg_0 = var_17; [L131] SORT_1 var_25_arg_1 = var_24; [L132] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L133] SORT_1 var_26_arg_0 = state_7; [L134] var_26_arg_0 = var_26_arg_0 & mask_SORT_1 [L135] SORT_9 var_26 = var_26_arg_0; [L136] SORT_9 var_27_arg_0 = var_26; [L137] SORT_9 var_27_arg_1 = var_11; [L138] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L139] SORT_1 var_31_arg_0 = state_29; [L140] var_31_arg_0 = var_31_arg_0 & mask_SORT_1 [L141] SORT_9 var_31 = var_31_arg_0; [L142] SORT_9 var_32_arg_0 = var_31; [L143] SORT_9 var_32_arg_1 = var_11; [L144] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L145] SORT_1 var_33_arg_0 = var_27; [L146] SORT_1 var_33_arg_1 = var_32; [L147] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L148] SORT_1 var_34_arg_0 = var_25; [L149] SORT_1 var_34_arg_1 = var_33; [L150] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L151] SORT_1 var_35_arg_0 = state_13; [L152] var_35_arg_0 = var_35_arg_0 & mask_SORT_1 [L153] SORT_9 var_35 = var_35_arg_0; [L154] SORT_9 var_36_arg_0 = var_35; [L155] SORT_9 var_36_arg_1 = var_11; [L156] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L157] SORT_1 var_37_arg_0 = state_20; [L158] var_37_arg_0 = var_37_arg_0 & mask_SORT_1 [L159] SORT_9 var_37 = var_37_arg_0; [L160] SORT_9 var_38_arg_0 = var_37; [L161] SORT_9 var_38_arg_1 = var_11; [L162] SORT_1 var_38 = var_38_arg_0 == var_38_arg_1; [L163] SORT_1 var_39_arg_0 = var_36; [L164] SORT_1 var_39_arg_1 = var_38; [L165] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L166] SORT_1 var_40_arg_0 = var_34; [L167] SORT_1 var_40_arg_1 = var_39; [L168] SORT_1 var_40 = var_40_arg_0 | var_40_arg_1; [L169] SORT_1 var_41_arg_0 = state_13; [L170] var_41_arg_0 = var_41_arg_0 & mask_SORT_1 [L171] SORT_9 var_41 = var_41_arg_0; [L172] SORT_9 var_42_arg_0 = var_41; [L173] SORT_9 var_42_arg_1 = var_11; [L174] SORT_1 var_42 = var_42_arg_0 == var_42_arg_1; [L175] SORT_1 var_43_arg_0 = state_29; [L176] var_43_arg_0 = var_43_arg_0 & mask_SORT_1 [L177] SORT_9 var_43 = var_43_arg_0; [L178] SORT_9 var_44_arg_0 = var_43; [L179] SORT_9 var_44_arg_1 = var_11; [L180] SORT_1 var_44 = var_44_arg_0 == var_44_arg_1; [L181] SORT_1 var_45_arg_0 = var_42; [L182] SORT_1 var_45_arg_1 = var_44; [L183] SORT_1 var_45 = var_45_arg_0 & var_45_arg_1; [L184] SORT_1 var_46_arg_0 = var_40; [L185] SORT_1 var_46_arg_1 = var_45; [L186] SORT_1 var_46 = var_46_arg_0 | var_46_arg_1; [L187] SORT_1 var_47_arg_0 = state_20; [L188] var_47_arg_0 = var_47_arg_0 & mask_SORT_1 [L189] SORT_9 var_47 = var_47_arg_0; [L190] SORT_9 var_48_arg_0 = var_47; [L191] SORT_9 var_48_arg_1 = var_11; [L192] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L193] SORT_1 var_49_arg_0 = state_29; [L194] var_49_arg_0 = var_49_arg_0 & mask_SORT_1 [L195] SORT_9 var_49 = var_49_arg_0; [L196] SORT_9 var_50_arg_0 = var_49; [L197] SORT_9 var_50_arg_1 = var_11; [L198] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L199] SORT_1 var_51_arg_0 = var_48; [L200] SORT_1 var_51_arg_1 = var_50; [L201] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L202] SORT_1 var_52_arg_0 = var_46; [L203] SORT_1 var_52_arg_1 = var_51; [L204] SORT_1 var_52 = var_52_arg_0 | var_52_arg_1; [L205] SORT_1 var_53_arg_0 = var_52; [L206] SORT_1 var_53 = ~var_53_arg_0; [L207] SORT_1 var_56_arg_0 = var_53; [L208] SORT_1 var_56 = ~var_56_arg_0; [L209] SORT_1 var_57_arg_0 = var_28; [L210] SORT_1 var_57_arg_1 = var_56; [L211] SORT_1 var_57 = var_57_arg_0 & var_57_arg_1; [L212] var_57 = var_57 & mask_SORT_1 [L213] SORT_1 bad_58_arg_0 = var_57; [L214] CALL __VERIFIER_assert(!(bad_58_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:32:30,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 49be4ee23c057d32f8ac5e24c222fef6761d7999dc1116253007afd08a0c1660 --- 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-5e519f3 [2022-11-02 20:32:33,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:32:33,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:32:33,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:32:33,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:32:33,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:32:33,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:32:33,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:32:33,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:32:33,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:32:33,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:32:33,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:32:33,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:32:33,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:32:33,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:32:33,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:32:33,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:32:33,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:32:33,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:32:33,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:32:33,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:32:33,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:32:33,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:32:33,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:32:33,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:32:33,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:32:33,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:32:33,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:32:33,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:32:33,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:32:33,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:32:33,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:32:33,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:32:33,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:32:33,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:32:33,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:32:33,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:32:33,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:32:33,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:32:33,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:32:33,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:32:33,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:32:33,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:32:33,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:32:33,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:32:33,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:32:33,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:32:33,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:32:33,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:32:33,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:32:33,553 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:32:33,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:32:33,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:32:33,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:32:33,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:32:33,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:32:33,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:32:33,555 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:32:33,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:32:33,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:32:33,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:32:33,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:32:33,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:32:33,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:32:33,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:32:33,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:33,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:32:33,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:32:33,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:32:33,560 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:32:33,560 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:32:33,560 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:32:33,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:32:33,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:32:33,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:32:33,562 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49be4ee23c057d32f8ac5e24c222fef6761d7999dc1116253007afd08a0c1660 [2022-11-02 20:32:34,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:32:34,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:32:34,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:32:34,103 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:32:34,104 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:32:34,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2022-11-02 20:32:34,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/bfe80c063/36d41b9cde2c4ab59e20608d74166114/FLAGc558a83bc [2022-11-02 20:32:34,958 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:32:34,959 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2022-11-02 20:32:34,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/bfe80c063/36d41b9cde2c4ab59e20608d74166114/FLAGc558a83bc [2022-11-02 20:32:35,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/data/bfe80c063/36d41b9cde2c4ab59e20608d74166114 [2022-11-02 20:32:35,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:32:35,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:32:35,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:35,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:32:35,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:32:35,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ddea73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35, skipping insertion in model container [2022-11-02 20:32:35,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:32:35,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:32:35,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1107,1120] [2022-11-02 20:32:35,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:35,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:32:35,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1107,1120] [2022-11-02 20:32:35,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:35,862 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:32:35,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35 WrapperNode [2022-11-02 20:32:35,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:35,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:35,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:32:35,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:32:35,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,945 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 556 [2022-11-02 20:32:35,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:35,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:32:35,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:32:35,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:32:35,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:35,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:36,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:32:36,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:32:36,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:32:36,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:32:36,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (1/1) ... [2022-11-02 20:32:36,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:36,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:32:36,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:32:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:32:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:32:36,379 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:32:36,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:32:37,360 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:32:37,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:32:37,377 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:32:37,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:37 BoogieIcfgContainer [2022-11-02 20:32:37,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:32:37,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:32:37,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:32:37,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:32:37,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:32:35" (1/3) ... [2022-11-02 20:32:37,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d329911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:37, skipping insertion in model container [2022-11-02 20:32:37,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:35" (2/3) ... [2022-11-02 20:32:37,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d329911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:37, skipping insertion in model container [2022-11-02 20:32:37,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:37" (3/3) ... [2022-11-02 20:32:37,398 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vlunc.c [2022-11-02 20:32:37,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:32:37,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:32:37,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:32:37,528 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;@6f603fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:32:37,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:32:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 78 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:32:37,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:37,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:32:37,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:32:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:37,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968526731] [2022-11-02 20:32:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:37,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:37,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:37,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:37,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:32:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:37,927 WARN L261 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-02 20:32:37,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:38,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:38,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:38,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968526731] [2022-11-02 20:32:38,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968526731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:38,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:38,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459238368] [2022-11-02 20:32:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:38,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:38,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:38,796 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 78 states have internal predecessors, (115), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:39,040 INFO L93 Difference]: Finished difference Result 224 states and 336 transitions. [2022-11-02 20:32:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:32:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:39,073 INFO L225 Difference]: With dead ends: 224 [2022-11-02 20:32:39,076 INFO L226 Difference]: Without dead ends: 147 [2022-11-02 20:32:39,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:39,088 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 208 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:39,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-02 20:32:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 77. [2022-11-02 20:32:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 76 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 111 transitions. [2022-11-02 20:32:39,146 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 111 transitions. Word has length 5 [2022-11-02 20:32:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:39,147 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 111 transitions. [2022-11-02 20:32:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 111 transitions. [2022-11-02 20:32:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:39,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:39,151 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:39,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:39,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:39,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:39,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash -64281915, now seen corresponding path program 1 times [2022-11-02 20:32:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:39,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592471436] [2022-11-02 20:32:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:39,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:39,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:39,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:39,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:32:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:39,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:39,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:39,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:39,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:39,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592471436] [2022-11-02 20:32:39,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592471436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:39,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:39,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251516068] [2022-11-02 20:32:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:39,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:39,953 INFO L87 Difference]: Start difference. First operand 77 states and 111 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:40,097 INFO L93 Difference]: Finished difference Result 291 states and 426 transitions. [2022-11-02 20:32:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:40,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:40,108 INFO L225 Difference]: With dead ends: 291 [2022-11-02 20:32:40,108 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:32:40,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:40,112 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 306 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:40,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 396 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:32:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 79. [2022-11-02 20:32:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 78 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2022-11-02 20:32:40,144 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 76 [2022-11-02 20:32:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:40,145 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2022-11-02 20:32:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2022-11-02 20:32:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:40,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:40,150 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:40,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:40,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:40,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1031632569, now seen corresponding path program 1 times [2022-11-02 20:32:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:40,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432565690] [2022-11-02 20:32:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:40,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:40,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:40,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:32:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:40,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:32:40,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:40,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:40,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:40,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432565690] [2022-11-02 20:32:40,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432565690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:41,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:41,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390001879] [2022-11-02 20:32:41,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:41,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:41,006 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:41,209 INFO L93 Difference]: Finished difference Result 296 states and 430 transitions. [2022-11-02 20:32:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:41,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:41,212 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:41,212 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:41,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:41,214 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 405 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:41,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 593 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 83. [2022-11-02 20:32:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 82 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2022-11-02 20:32:41,242 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 76 [2022-11-02 20:32:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:41,242 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2022-11-02 20:32:41,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2022-11-02 20:32:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:41,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:41,249 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:41,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:41,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2047181001, now seen corresponding path program 1 times [2022-11-02 20:32:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:41,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900625419] [2022-11-02 20:32:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:41,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:41,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:41,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:41,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:32:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:41,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:41,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:41,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:41,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900625419] [2022-11-02 20:32:41,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900625419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:41,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:41,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:41,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874255170] [2022-11-02 20:32:41,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:41,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:41,928 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:42,045 INFO L93 Difference]: Finished difference Result 296 states and 429 transitions. [2022-11-02 20:32:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:42,048 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:42,048 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:42,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:42,050 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 398 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:42,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 596 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 85. [2022-11-02 20:32:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4285714285714286) internal successors, (120), 84 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2022-11-02 20:32:42,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 76 [2022-11-02 20:32:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:42,065 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2022-11-02 20:32:42,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2022-11-02 20:32:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:42,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:42,067 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:42,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:42,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:42,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash 361001163, now seen corresponding path program 1 times [2022-11-02 20:32:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:42,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201878266] [2022-11-02 20:32:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:42,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:42,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:42,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:42,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:32:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:42,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:42,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:42,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:42,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:42,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201878266] [2022-11-02 20:32:42,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201878266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:42,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:42,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873726060] [2022-11-02 20:32:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:42,796 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:42,911 INFO L93 Difference]: Finished difference Result 296 states and 428 transitions. [2022-11-02 20:32:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:42,914 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:42,914 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:42,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:42,918 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 386 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:42,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 89. [2022-11-02 20:32:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2022-11-02 20:32:42,935 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 76 [2022-11-02 20:32:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:42,936 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2022-11-02 20:32:42,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2022-11-02 20:32:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:42,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:42,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:42,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-02 20:32:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:43,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1972391475, now seen corresponding path program 1 times [2022-11-02 20:32:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:43,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592281013] [2022-11-02 20:32:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:43,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:43,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:43,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:43,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:32:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:43,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:43,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:43,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:43,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:43,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592281013] [2022-11-02 20:32:43,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592281013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:43,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:43,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54712517] [2022-11-02 20:32:43,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:43,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:43,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:43,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:43,710 INFO L87 Difference]: Start difference. First operand 89 states and 125 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:43,807 INFO L93 Difference]: Finished difference Result 291 states and 422 transitions. [2022-11-02 20:32:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:43,809 INFO L225 Difference]: With dead ends: 291 [2022-11-02 20:32:43,810 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:32:43,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:43,812 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 257 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:43,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:32:43,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 97. [2022-11-02 20:32:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2022-11-02 20:32:43,822 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 76 [2022-11-02 20:32:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:43,822 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2022-11-02 20:32:43,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2022-11-02 20:32:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:43,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:43,825 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:43,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-02 20:32:44,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:44,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1528490801, now seen corresponding path program 1 times [2022-11-02 20:32:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87242084] [2022-11-02 20:32:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:44,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:44,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:44,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:32:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:44,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:32:44,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:44,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:44,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:44,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87242084] [2022-11-02 20:32:44,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87242084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:44,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:44,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297360984] [2022-11-02 20:32:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:44,695 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:44,907 INFO L93 Difference]: Finished difference Result 312 states and 450 transitions. [2022-11-02 20:32:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:44,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:44,910 INFO L225 Difference]: With dead ends: 312 [2022-11-02 20:32:44,910 INFO L226 Difference]: Without dead ends: 239 [2022-11-02 20:32:44,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:44,912 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 385 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:44,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 587 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-02 20:32:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 99. [2022-11-02 20:32:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 98 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2022-11-02 20:32:44,925 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 76 [2022-11-02 20:32:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:44,926 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2022-11-02 20:32:44,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2022-11-02 20:32:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:44,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:44,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:44,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:45,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 737890385, now seen corresponding path program 1 times [2022-11-02 20:32:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:45,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571229434] [2022-11-02 20:32:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:45,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:45,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:45,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:32:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:45,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:45,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:45,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:45,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:45,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571229434] [2022-11-02 20:32:45,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571229434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:45,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:45,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881397063] [2022-11-02 20:32:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:45,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:45,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:45,616 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:45,720 INFO L93 Difference]: Finished difference Result 296 states and 425 transitions. [2022-11-02 20:32:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:45,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:45,722 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:45,722 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:45,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:45,724 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 350 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:45,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 568 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 101. [2022-11-02 20:32:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 140 transitions. [2022-11-02 20:32:45,730 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 140 transitions. Word has length 76 [2022-11-02 20:32:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:45,731 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 140 transitions. [2022-11-02 20:32:45,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 140 transitions. [2022-11-02 20:32:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:45,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:45,733 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:45,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:45,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:45,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash 722371667, now seen corresponding path program 1 times [2022-11-02 20:32:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:45,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716605567] [2022-11-02 20:32:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:45,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:45,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:45,955 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:45,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:32:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:46,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:46,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:46,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:46,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716605567] [2022-11-02 20:32:46,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716605567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:46,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:46,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558886698] [2022-11-02 20:32:46,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:46,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:46,440 INFO L87 Difference]: Start difference. First operand 101 states and 140 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:46,561 INFO L93 Difference]: Finished difference Result 296 states and 424 transitions. [2022-11-02 20:32:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:46,565 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:46,565 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:46,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:46,566 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 338 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:46,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 561 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 105. [2022-11-02 20:32:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2022-11-02 20:32:46,577 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 76 [2022-11-02 20:32:46,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:46,578 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2022-11-02 20:32:46,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2022-11-02 20:32:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:46,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:46,580 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:46,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:46,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1615858005, now seen corresponding path program 1 times [2022-11-02 20:32:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:46,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384161744] [2022-11-02 20:32:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:46,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:46,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:46,801 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:46,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:32:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:47,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:47,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:47,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:47,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:47,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384161744] [2022-11-02 20:32:47,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384161744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:47,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:47,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:47,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592509098] [2022-11-02 20:32:47,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:47,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:47,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:47,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:47,365 INFO L87 Difference]: Start difference. First operand 105 states and 145 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:47,450 INFO L93 Difference]: Finished difference Result 291 states and 418 transitions. [2022-11-02 20:32:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:47,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:47,452 INFO L225 Difference]: With dead ends: 291 [2022-11-02 20:32:47,452 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:32:47,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:47,454 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 218 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:47,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 388 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:32:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 111. [2022-11-02 20:32:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2022-11-02 20:32:47,460 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 76 [2022-11-02 20:32:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:47,461 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2022-11-02 20:32:47,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2022-11-02 20:32:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:47,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:47,463 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:47,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:47,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:47,681 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash -229509161, now seen corresponding path program 1 times [2022-11-02 20:32:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903813790] [2022-11-02 20:32:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:47,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:47,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:47,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:32:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:48,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:32:48,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:48,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:48,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903813790] [2022-11-02 20:32:48,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903813790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:48,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:48,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123669759] [2022-11-02 20:32:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:48,495 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:48,669 INFO L93 Difference]: Finished difference Result 328 states and 470 transitions. [2022-11-02 20:32:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:48,672 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:32:48,672 INFO L226 Difference]: Without dead ends: 255 [2022-11-02 20:32:48,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:48,673 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 365 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:48,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 581 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-02 20:32:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 115. [2022-11-02 20:32:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3859649122807018) internal successors, (158), 114 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 158 transitions. [2022-11-02 20:32:48,681 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 158 transitions. Word has length 76 [2022-11-02 20:32:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:48,681 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 158 transitions. [2022-11-02 20:32:48,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 158 transitions. [2022-11-02 20:32:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:48,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:48,683 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:48,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:48,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:48,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1073514663, now seen corresponding path program 1 times [2022-11-02 20:32:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:48,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722410558] [2022-11-02 20:32:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:48,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:48,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:32:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:49,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:49,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:49,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:49,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722410558] [2022-11-02 20:32:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722410558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:49,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981891747] [2022-11-02 20:32:49,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:49,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:49,382 INFO L87 Difference]: Start difference. First operand 115 states and 158 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:49,484 INFO L93 Difference]: Finished difference Result 296 states and 421 transitions. [2022-11-02 20:32:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:49,487 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:49,487 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:49,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:49,488 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 302 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 540 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 117. [2022-11-02 20:32:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 116 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 160 transitions. [2022-11-02 20:32:49,495 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 160 transitions. Word has length 76 [2022-11-02 20:32:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:49,495 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 160 transitions. [2022-11-02 20:32:49,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 160 transitions. [2022-11-02 20:32:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:49,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:49,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:49,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:49,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:49,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1145901221, now seen corresponding path program 1 times [2022-11-02 20:32:49,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:49,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527700183] [2022-11-02 20:32:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:49,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:49,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:49,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:32:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:50,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:50,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:50,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:50,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527700183] [2022-11-02 20:32:50,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527700183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:50,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:50,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951242201] [2022-11-02 20:32:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:50,214 INFO L87 Difference]: Start difference. First operand 117 states and 160 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:50,327 INFO L93 Difference]: Finished difference Result 296 states and 420 transitions. [2022-11-02 20:32:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:50,329 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:50,329 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:50,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:50,330 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 290 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:50,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 533 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 121. [2022-11-02 20:32:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2022-11-02 20:32:50,337 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 165 transitions. Word has length 76 [2022-11-02 20:32:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:50,338 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 165 transitions. [2022-11-02 20:32:50,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 165 transitions. [2022-11-02 20:32:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:50,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:50,340 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:50,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:50,547 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 240302173, now seen corresponding path program 1 times [2022-11-02 20:32:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:50,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212836333] [2022-11-02 20:32:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:50,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:50,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:32:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:50,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:50,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:51,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:51,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:51,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212836333] [2022-11-02 20:32:51,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212836333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:51,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:51,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:51,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488279593] [2022-11-02 20:32:51,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:51,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:51,164 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:51,246 INFO L93 Difference]: Finished difference Result 291 states and 414 transitions. [2022-11-02 20:32:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:51,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:51,248 INFO L225 Difference]: With dead ends: 291 [2022-11-02 20:32:51,248 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:32:51,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:51,250 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 169 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:51,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 384 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:32:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 129. [2022-11-02 20:32:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.375) internal successors, (176), 128 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 176 transitions. [2022-11-02 20:32:51,256 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 176 transitions. Word has length 76 [2022-11-02 20:32:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:51,257 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 176 transitions. [2022-11-02 20:32:51,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 176 transitions. [2022-11-02 20:32:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:51,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:51,259 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:51,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:51,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:51,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:51,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash 663003999, now seen corresponding path program 1 times [2022-11-02 20:32:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:51,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20236897] [2022-11-02 20:32:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:51,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:51,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:51,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:51,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:32:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:51,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:32:51,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:52,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:52,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:52,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20236897] [2022-11-02 20:32:52,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20236897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:52,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:52,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435079681] [2022-11-02 20:32:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:52,491 INFO L87 Difference]: Start difference. First operand 129 states and 176 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:52,707 INFO L93 Difference]: Finished difference Result 344 states and 490 transitions. [2022-11-02 20:32:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:52,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:52,710 INFO L225 Difference]: With dead ends: 344 [2022-11-02 20:32:52,710 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 20:32:52,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:52,715 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 345 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:52,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 575 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 20:32:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 131. [2022-11-02 20:32:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 130 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2022-11-02 20:32:52,735 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 76 [2022-11-02 20:32:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:52,736 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2022-11-02 20:32:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2022-11-02 20:32:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:52,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:52,738 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:52,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-02 20:32:52,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:52,956 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:52,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1025939743, now seen corresponding path program 1 times [2022-11-02 20:32:52,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:52,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974876196] [2022-11-02 20:32:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:52,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:52,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:32:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:53,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:53,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:53,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:53,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:53,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974876196] [2022-11-02 20:32:53,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974876196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:53,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:53,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:53,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922554784] [2022-11-02 20:32:53,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:53,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:53,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:53,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:53,480 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:53,582 INFO L93 Difference]: Finished difference Result 296 states and 417 transitions. [2022-11-02 20:32:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:53,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:53,584 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:53,585 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:53,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:53,586 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 254 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:53,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 512 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 133. [2022-11-02 20:32:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 132 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 180 transitions. [2022-11-02 20:32:53,594 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 180 transitions. Word has length 76 [2022-11-02 20:32:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:53,594 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 180 transitions. [2022-11-02 20:32:53,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 180 transitions. [2022-11-02 20:32:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:53,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:53,596 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:53,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:53,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:53,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1680679651, now seen corresponding path program 1 times [2022-11-02 20:32:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:53,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163450056] [2022-11-02 20:32:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:53,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:53,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:53,817 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:32:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:32:54,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:54,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:54,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:54,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163450056] [2022-11-02 20:32:54,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163450056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:54,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:54,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:54,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465884100] [2022-11-02 20:32:54,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:54,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:54,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:54,338 INFO L87 Difference]: Start difference. First operand 133 states and 180 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:54,442 INFO L93 Difference]: Finished difference Result 296 states and 416 transitions. [2022-11-02 20:32:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:54,445 INFO L225 Difference]: With dead ends: 296 [2022-11-02 20:32:54,445 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 20:32:54,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:54,447 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 242 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:54,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 505 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 20:32:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 137. [2022-11-02 20:32:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3602941176470589) internal successors, (185), 136 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2022-11-02 20:32:54,456 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 76 [2022-11-02 20:32:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:54,456 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2022-11-02 20:32:54,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2022-11-02 20:32:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:54,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:54,458 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:54,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:54,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:54,677 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1093873637, now seen corresponding path program 1 times [2022-11-02 20:32:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:54,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000350022] [2022-11-02 20:32:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:54,680 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:54,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:32:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:32:55,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:55,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:55,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:55,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000350022] [2022-11-02 20:32:55,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000350022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:55,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:55,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:32:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413799516] [2022-11-02 20:32:55,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:55,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:32:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:32:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:55,607 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:55,694 INFO L93 Difference]: Finished difference Result 268 states and 366 transitions. [2022-11-02 20:32:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:32:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:32:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:55,698 INFO L225 Difference]: With dead ends: 268 [2022-11-02 20:32:55,698 INFO L226 Difference]: Without dead ends: 195 [2022-11-02 20:32:55,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:55,699 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 62 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:55,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 532 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2022-11-02 20:32:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-02 20:32:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-02 20:32:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.3298969072164948) internal successors, (258), 194 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) [2022-11-02 20:32:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2022-11-02 20:32:55,707 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 76 [2022-11-02 20:32:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:55,708 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2022-11-02 20:32:55,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2022-11-02 20:32:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:32:55,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:55,710 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:55,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:55,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:55,930 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1092026595, now seen corresponding path program 1 times [2022-11-02 20:32:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:55,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499072902] [2022-11-02 20:32:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:55,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:55,932 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:55,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:32:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:56,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-02 20:32:56,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:57,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:03,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:03,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499072902] [2022-11-02 20:33:03,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499072902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:03,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:03,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 20:33:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674737092] [2022-11-02 20:33:03,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:33:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:33:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:33:03,988 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:08,097 INFO L93 Difference]: Finished difference Result 874 states and 1209 transitions. [2022-11-02 20:33:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 20:33:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:08,106 INFO L225 Difference]: With dead ends: 874 [2022-11-02 20:33:08,107 INFO L226 Difference]: Without dead ends: 872 [2022-11-02 20:33:08,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=751, Invalid=2441, Unknown=0, NotChecked=0, Total=3192 [2022-11-02 20:33:08,110 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1885 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:08,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 2989 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 268 Invalid, 0 Unknown, 551 Unchecked, 0.7s Time] [2022-11-02 20:33:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-02 20:33:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 346. [2022-11-02 20:33:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.327536231884058) internal successors, (458), 345 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 458 transitions. [2022-11-02 20:33:08,132 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 458 transitions. Word has length 76 [2022-11-02 20:33:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:08,132 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 458 transitions. [2022-11-02 20:33:08,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 458 transitions. [2022-11-02 20:33:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:08,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:08,135 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:08,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:08,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:08,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:08,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1232575205, now seen corresponding path program 1 times [2022-11-02 20:33:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:08,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807294529] [2022-11-02 20:33:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:08,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:08,345 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:08,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:33:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:08,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:08,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:09,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:09,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807294529] [2022-11-02 20:33:09,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807294529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:09,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:09,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10936495] [2022-11-02 20:33:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:09,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:09,133 INFO L87 Difference]: Start difference. First operand 346 states and 458 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:09,210 INFO L93 Difference]: Finished difference Result 494 states and 671 transitions. [2022-11-02 20:33:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:33:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:09,215 INFO L225 Difference]: With dead ends: 494 [2022-11-02 20:33:09,215 INFO L226 Difference]: Without dead ends: 346 [2022-11-02 20:33:09,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:09,216 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 41 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 546 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-02 20:33:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-02 20:33:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-11-02 20:33:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.3217391304347825) internal successors, (456), 345 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 456 transitions. [2022-11-02 20:33:09,231 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 456 transitions. Word has length 76 [2022-11-02 20:33:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:09,232 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 456 transitions. [2022-11-02 20:33:09,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 456 transitions. [2022-11-02 20:33:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:09,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:09,234 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:09,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:09,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1515673317, now seen corresponding path program 1 times [2022-11-02 20:33:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579694521] [2022-11-02 20:33:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:09,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:09,455 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:09,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:33:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:09,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:09,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:09,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:10,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:10,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579694521] [2022-11-02 20:33:10,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579694521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:10,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:10,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716426500] [2022-11-02 20:33:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:10,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:10,003 INFO L87 Difference]: Start difference. First operand 346 states and 456 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:10,063 INFO L93 Difference]: Finished difference Result 510 states and 688 transitions. [2022-11-02 20:33:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:33:10,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:10,067 INFO L225 Difference]: With dead ends: 510 [2022-11-02 20:33:10,067 INFO L226 Difference]: Without dead ends: 346 [2022-11-02 20:33:10,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:10,069 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 29 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:10,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 476 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-02 20:33:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-02 20:33:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-11-02 20:33:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.3159420289855073) internal successors, (454), 345 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) [2022-11-02 20:33:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 454 transitions. [2022-11-02 20:33:10,081 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 454 transitions. Word has length 76 [2022-11-02 20:33:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:10,081 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 454 transitions. [2022-11-02 20:33:10,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 454 transitions. [2022-11-02 20:33:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:10,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:10,083 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:10,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-02 20:33:10,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:10,299 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:10,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1942023451, now seen corresponding path program 1 times [2022-11-02 20:33:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:10,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502703604] [2022-11-02 20:33:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:10,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:10,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:10,301 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:10,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:33:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:10,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:10,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:10,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:10,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502703604] [2022-11-02 20:33:10,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502703604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:10,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:10,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739629126] [2022-11-02 20:33:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:10,760 INFO L87 Difference]: Start difference. First operand 346 states and 454 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:10,815 INFO L93 Difference]: Finished difference Result 474 states and 642 transitions. [2022-11-02 20:33:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:33:10,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:10,819 INFO L225 Difference]: With dead ends: 474 [2022-11-02 20:33:10,819 INFO L226 Difference]: Without dead ends: 294 [2022-11-02 20:33:10,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:10,821 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 7 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:10,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 488 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 20:33:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-02 20:33:10,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-11-02 20:33:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.3310580204778157) internal successors, (390), 293 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 390 transitions. [2022-11-02 20:33:10,831 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 390 transitions. Word has length 76 [2022-11-02 20:33:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:10,832 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 390 transitions. [2022-11-02 20:33:10,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 390 transitions. [2022-11-02 20:33:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:10,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:10,834 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:10,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:11,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:11,053 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash 817025641, now seen corresponding path program 1 times [2022-11-02 20:33:11,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:11,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011640116] [2022-11-02 20:33:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:11,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:11,056 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:11,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:33:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:11,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:11,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:11,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:11,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:11,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011640116] [2022-11-02 20:33:11,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011640116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:11,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:11,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:11,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664320740] [2022-11-02 20:33:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:11,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:11,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:11,502 INFO L87 Difference]: Start difference. First operand 294 states and 390 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:11,622 INFO L93 Difference]: Finished difference Result 681 states and 922 transitions. [2022-11-02 20:33:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:11,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:11,630 INFO L225 Difference]: With dead ends: 681 [2022-11-02 20:33:11,632 INFO L226 Difference]: Without dead ends: 463 [2022-11-02 20:33:11,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:11,641 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 95 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:11,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 643 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-02 20:33:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-02 20:33:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 294. [2022-11-02 20:33:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.3276450511945392) internal successors, (389), 293 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 389 transitions. [2022-11-02 20:33:11,665 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 389 transitions. Word has length 76 [2022-11-02 20:33:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:11,665 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 389 transitions. [2022-11-02 20:33:11,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 389 transitions. [2022-11-02 20:33:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:11,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:11,668 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:11,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:11,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:11,883 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:11,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1377725419, now seen corresponding path program 1 times [2022-11-02 20:33:11,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:11,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595364197] [2022-11-02 20:33:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:11,887 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:11,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:33:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:12,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:12,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:12,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:12,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:12,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595364197] [2022-11-02 20:33:12,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595364197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:12,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:12,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:12,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464054205] [2022-11-02 20:33:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:12,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:12,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:12,411 INFO L87 Difference]: Start difference. First operand 294 states and 389 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:12,641 INFO L93 Difference]: Finished difference Result 502 states and 685 transitions. [2022-11-02 20:33:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:12,644 INFO L225 Difference]: With dead ends: 502 [2022-11-02 20:33:12,644 INFO L226 Difference]: Without dead ends: 302 [2022-11-02 20:33:12,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:12,646 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 227 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:12,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 918 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-02 20:33:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-02 20:33:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 250. [2022-11-02 20:33:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 249 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 334 transitions. [2022-11-02 20:33:12,660 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 334 transitions. Word has length 76 [2022-11-02 20:33:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:12,661 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 334 transitions. [2022-11-02 20:33:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 334 transitions. [2022-11-02 20:33:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:12,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:12,663 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:12,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:12,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:12,883 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1796873237, now seen corresponding path program 1 times [2022-11-02 20:33:12,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:12,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738889631] [2022-11-02 20:33:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:12,887 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:12,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:33:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:13,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:13,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:13,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738889631] [2022-11-02 20:33:13,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738889631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:13,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:13,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790039588] [2022-11-02 20:33:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:13,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:13,351 INFO L87 Difference]: Start difference. First operand 250 states and 334 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:13,464 INFO L93 Difference]: Finished difference Result 547 states and 750 transitions. [2022-11-02 20:33:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:13,467 INFO L225 Difference]: With dead ends: 547 [2022-11-02 20:33:13,468 INFO L226 Difference]: Without dead ends: 385 [2022-11-02 20:33:13,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:13,469 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 95 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:13,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 641 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-02 20:33:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-02 20:33:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 250. [2022-11-02 20:33:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3373493975903614) internal successors, (333), 249 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 333 transitions. [2022-11-02 20:33:13,481 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 333 transitions. Word has length 76 [2022-11-02 20:33:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:13,482 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 333 transitions. [2022-11-02 20:33:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 333 transitions. [2022-11-02 20:33:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:13,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:13,484 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:13,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 20:33:13,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:13,699 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2145005677, now seen corresponding path program 1 times [2022-11-02 20:33:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856269740] [2022-11-02 20:33:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:13,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:13,701 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:13,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:33:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:13,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:13,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:14,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:14,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:14,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856269740] [2022-11-02 20:33:14,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856269740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:14,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:14,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:14,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408319865] [2022-11-02 20:33:14,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:14,104 INFO L87 Difference]: Start difference. First operand 250 states and 333 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:14,289 INFO L93 Difference]: Finished difference Result 541 states and 741 transitions. [2022-11-02 20:33:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:14,294 INFO L225 Difference]: With dead ends: 541 [2022-11-02 20:33:14,294 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 20:33:14,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:14,295 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 139 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:14,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 880 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-11-02 20:33:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 20:33:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 250. [2022-11-02 20:33:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3333333333333333) internal successors, (332), 249 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 332 transitions. [2022-11-02 20:33:14,306 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 332 transitions. Word has length 76 [2022-11-02 20:33:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:14,307 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 332 transitions. [2022-11-02 20:33:14,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 332 transitions. [2022-11-02 20:33:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:14,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:14,309 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:14,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:14,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:14,523 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1247612399, now seen corresponding path program 1 times [2022-11-02 20:33:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:14,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539351695] [2022-11-02 20:33:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:14,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:14,527 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:14,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:33:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:14,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:14,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:15,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:15,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:15,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539351695] [2022-11-02 20:33:15,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539351695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:15,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:15,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:15,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691574343] [2022-11-02 20:33:15,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:15,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:15,021 INFO L87 Difference]: Start difference. First operand 250 states and 332 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:15,191 INFO L93 Difference]: Finished difference Result 458 states and 628 transitions. [2022-11-02 20:33:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:15,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:15,193 INFO L225 Difference]: With dead ends: 458 [2022-11-02 20:33:15,193 INFO L226 Difference]: Without dead ends: 302 [2022-11-02 20:33:15,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:15,195 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 177 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:15,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 781 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-11-02 20:33:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-02 20:33:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 250. [2022-11-02 20:33:15,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3293172690763053) internal successors, (331), 249 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-11-02 20:33:15,206 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 76 [2022-11-02 20:33:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:15,207 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-11-02 20:33:15,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-11-02 20:33:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:15,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:15,209 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:15,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:15,423 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1671259121, now seen corresponding path program 1 times [2022-11-02 20:33:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447753345] [2022-11-02 20:33:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:15,426 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:15,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:33:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:15,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:15,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:15,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:15,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:15,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447753345] [2022-11-02 20:33:15,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447753345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:15,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:15,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:15,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291162696] [2022-11-02 20:33:15,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:15,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:15,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:15,860 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:16,054 INFO L93 Difference]: Finished difference Result 493 states and 674 transitions. [2022-11-02 20:33:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:16,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:16,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:16,058 INFO L225 Difference]: With dead ends: 493 [2022-11-02 20:33:16,059 INFO L226 Difference]: Without dead ends: 347 [2022-11-02 20:33:16,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:16,060 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 118 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:16,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 928 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-11-02 20:33:16,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-02 20:33:16,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 250. [2022-11-02 20:33:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3253012048192772) internal successors, (330), 249 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 330 transitions. [2022-11-02 20:33:16,071 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 330 transitions. Word has length 76 [2022-11-02 20:33:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:16,072 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 330 transitions. [2022-11-02 20:33:16,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 330 transitions. [2022-11-02 20:33:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:16,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:16,073 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:16,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:16,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:16,274 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1922108301, now seen corresponding path program 1 times [2022-11-02 20:33:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:16,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210018141] [2022-11-02 20:33:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:16,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:16,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:16,278 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:16,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:33:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:16,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:16,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:16,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210018141] [2022-11-02 20:33:16,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210018141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:16,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:16,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:16,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231723884] [2022-11-02 20:33:16,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:16,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:16,877 INFO L87 Difference]: Start difference. First operand 250 states and 330 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:17,100 INFO L93 Difference]: Finished difference Result 477 states and 651 transitions. [2022-11-02 20:33:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:17,106 INFO L225 Difference]: With dead ends: 477 [2022-11-02 20:33:17,106 INFO L226 Difference]: Without dead ends: 335 [2022-11-02 20:33:17,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:17,108 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 111 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:17,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 797 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2022-11-02 20:33:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-02 20:33:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 250. [2022-11-02 20:33:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.321285140562249) internal successors, (329), 249 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 329 transitions. [2022-11-02 20:33:17,122 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 329 transitions. Word has length 76 [2022-11-02 20:33:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:17,123 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 329 transitions. [2022-11-02 20:33:17,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 329 transitions. [2022-11-02 20:33:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:17,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:17,125 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:17,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 20:33:17,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:17,347 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1119733, now seen corresponding path program 1 times [2022-11-02 20:33:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:17,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527424693] [2022-11-02 20:33:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:17,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:17,350 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:17,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:33:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:17,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:17,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:17,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:17,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:17,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527424693] [2022-11-02 20:33:17,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527424693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:17,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:17,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104076713] [2022-11-02 20:33:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:17,873 INFO L87 Difference]: Start difference. First operand 250 states and 329 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:18,051 INFO L93 Difference]: Finished difference Result 426 states and 581 transitions. [2022-11-02 20:33:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:18,054 INFO L225 Difference]: With dead ends: 426 [2022-11-02 20:33:18,054 INFO L226 Difference]: Without dead ends: 286 [2022-11-02 20:33:18,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:18,056 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 127 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:18,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 818 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-11-02 20:33:18,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-02 20:33:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 250. [2022-11-02 20:33:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3172690763052208) internal successors, (328), 249 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 328 transitions. [2022-11-02 20:33:18,067 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 328 transitions. Word has length 76 [2022-11-02 20:33:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:18,067 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 328 transitions. [2022-11-02 20:33:18,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 328 transitions. [2022-11-02 20:33:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:18,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:18,069 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:18,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:18,287 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 141668343, now seen corresponding path program 1 times [2022-11-02 20:33:18,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:18,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532823015] [2022-11-02 20:33:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:18,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:18,291 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:18,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:33:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:18,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:18,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:18,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:18,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:18,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532823015] [2022-11-02 20:33:18,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532823015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:18,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:18,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865888487] [2022-11-02 20:33:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:18,761 INFO L87 Difference]: Start difference. First operand 250 states and 328 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:18,940 INFO L93 Difference]: Finished difference Result 429 states and 584 transitions. [2022-11-02 20:33:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:18,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:18,944 INFO L225 Difference]: With dead ends: 429 [2022-11-02 20:33:18,944 INFO L226 Difference]: Without dead ends: 299 [2022-11-02 20:33:18,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:18,946 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 82 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:18,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 825 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-02 20:33:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-02 20:33:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2022-11-02 20:33:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3132530120481927) internal successors, (327), 249 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 327 transitions. [2022-11-02 20:33:18,957 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 327 transitions. Word has length 76 [2022-11-02 20:33:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:18,957 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 327 transitions. [2022-11-02 20:33:18,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 327 transitions. [2022-11-02 20:33:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:18,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:18,959 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:18,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:19,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:19,178 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1138195335, now seen corresponding path program 1 times [2022-11-02 20:33:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:19,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310442477] [2022-11-02 20:33:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:19,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:19,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:19,182 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:33:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:19,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:19,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:19,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:19,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:19,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310442477] [2022-11-02 20:33:19,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310442477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:19,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:19,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:19,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542178054] [2022-11-02 20:33:19,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:19,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:19,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:19,722 INFO L87 Difference]: Start difference. First operand 250 states and 327 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:19,888 INFO L93 Difference]: Finished difference Result 415 states and 564 transitions. [2022-11-02 20:33:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:19,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:19,892 INFO L225 Difference]: With dead ends: 415 [2022-11-02 20:33:19,892 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:33:19,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:19,896 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 83 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:19,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 798 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 57 Unchecked, 0.1s Time] [2022-11-02 20:33:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:33:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 252. [2022-11-02 20:33:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.3107569721115537) internal successors, (329), 251 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 329 transitions. [2022-11-02 20:33:19,911 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 329 transitions. Word has length 76 [2022-11-02 20:33:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:19,912 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 329 transitions. [2022-11-02 20:33:19,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 329 transitions. [2022-11-02 20:33:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:19,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:19,913 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:19,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-02 20:33:20,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:20,132 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:20,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash -437130757, now seen corresponding path program 1 times [2022-11-02 20:33:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:20,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133599293] [2022-11-02 20:33:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:20,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:20,136 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:20,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:33:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:20,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:20,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:20,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:20,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:20,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133599293] [2022-11-02 20:33:20,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133599293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:20,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:20,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:20,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603359368] [2022-11-02 20:33:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:20,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:20,719 INFO L87 Difference]: Start difference. First operand 252 states and 329 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:20,849 INFO L93 Difference]: Finished difference Result 403 states and 546 transitions. [2022-11-02 20:33:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:33:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:20,852 INFO L225 Difference]: With dead ends: 403 [2022-11-02 20:33:20,853 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 20:33:20,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:20,854 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 62 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:20,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 683 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-11-02 20:33:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 20:33:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2022-11-02 20:33:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.308300395256917) internal successors, (331), 253 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 331 transitions. [2022-11-02 20:33:20,867 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 331 transitions. Word has length 76 [2022-11-02 20:33:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:20,867 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 331 transitions. [2022-11-02 20:33:20,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 331 transitions. [2022-11-02 20:33:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:20,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:20,869 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:20,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:21,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:21,083 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash 242927613, now seen corresponding path program 1 times [2022-11-02 20:33:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049871934] [2022-11-02 20:33:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:21,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:21,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:21,086 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:21,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:33:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:21,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:21,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:21,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:21,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:21,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049871934] [2022-11-02 20:33:21,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049871934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:21,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:21,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:21,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531135676] [2022-11-02 20:33:21,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:21,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:21,610 INFO L87 Difference]: Start difference. First operand 254 states and 331 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:21,784 INFO L93 Difference]: Finished difference Result 403 states and 544 transitions. [2022-11-02 20:33:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:21,787 INFO L225 Difference]: With dead ends: 403 [2022-11-02 20:33:21,787 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 20:33:21,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:33:21,788 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 64 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:21,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 770 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-11-02 20:33:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 20:33:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 256. [2022-11-02 20:33:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.3058823529411765) internal successors, (333), 255 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 333 transitions. [2022-11-02 20:33:21,801 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 333 transitions. Word has length 76 [2022-11-02 20:33:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:21,802 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 333 transitions. [2022-11-02 20:33:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 333 transitions. [2022-11-02 20:33:21,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:33:21,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:21,803 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:33:21,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:22,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:22,017 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:22,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2017934975, now seen corresponding path program 1 times [2022-11-02 20:33:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:22,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489274581] [2022-11-02 20:33:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:22,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:22,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:22,021 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:22,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:33:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:22,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-02 20:33:22,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:33:24,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:33:39,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:39,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489274581] [2022-11-02 20:33:39,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489274581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:39,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:39,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-02 20:33:39,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271408338] [2022-11-02 20:33:39,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:39,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-02 20:33:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-02 20:33:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2140, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 20:33:39,872 INFO L87 Difference]: Start difference. First operand 256 states and 333 transitions. Second operand has 48 states, 48 states have (on average 3.125) internal successors, (150), 48 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:48,419 INFO L93 Difference]: Finished difference Result 867 states and 1218 transitions. [2022-11-02 20:33:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 20:33:48,420 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.125) internal successors, (150), 48 states have internal predecessors, (150), 0 states have call successors, (0), 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 76 [2022-11-02 20:33:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:48,427 INFO L225 Difference]: With dead ends: 867 [2022-11-02 20:33:48,427 INFO L226 Difference]: Without dead ends: 865 [2022-11-02 20:33:48,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=1201, Invalid=7355, Unknown=0, NotChecked=0, Total=8556 [2022-11-02 20:33:48,432 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1683 mSDsluCounter, 10679 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 11045 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1226 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:48,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 11045 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 760 Invalid, 0 Unknown, 1226 Unchecked, 1.3s Time] [2022-11-02 20:33:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-11-02 20:33:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 327. [2022-11-02 20:33:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.343558282208589) internal successors, (438), 326 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 438 transitions. [2022-11-02 20:33:48,467 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 438 transitions. Word has length 76 [2022-11-02 20:33:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:48,467 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 438 transitions. [2022-11-02 20:33:48,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.125) internal successors, (150), 48 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 438 transitions. [2022-11-02 20:33:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:33:48,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:48,477 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:48,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:48,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:48,691 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:48,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1027816237, now seen corresponding path program 1 times [2022-11-02 20:33:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:48,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457912965] [2022-11-02 20:33:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:48,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:48,695 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:48,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:33:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:49,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:49,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 71 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:49,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 71 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:50,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457912965] [2022-11-02 20:33:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457912965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:50,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:50,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 20:33:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737959019] [2022-11-02 20:33:50,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:50,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:33:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:33:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:33:50,332 INFO L87 Difference]: Start difference. First operand 327 states and 438 transitions. Second operand has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:50,696 INFO L93 Difference]: Finished difference Result 941 states and 1332 transitions. [2022-11-02 20:33:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:33:50,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:33:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:50,703 INFO L225 Difference]: With dead ends: 941 [2022-11-02 20:33:50,703 INFO L226 Difference]: Without dead ends: 742 [2022-11-02 20:33:50,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:33:50,705 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 397 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:50,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 769 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-02 20:33:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-02 20:33:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 340. [2022-11-02 20:33:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.3333333333333333) internal successors, (452), 339 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 452 transitions. [2022-11-02 20:33:50,741 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 452 transitions. Word has length 147 [2022-11-02 20:33:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:50,742 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 452 transitions. [2022-11-02 20:33:50,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 452 transitions. [2022-11-02 20:33:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:33:50,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:50,745 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:50,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:50,960 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 60465583, now seen corresponding path program 1 times [2022-11-02 20:33:50,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:50,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994199157] [2022-11-02 20:33:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:50,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:50,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:50,965 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:50,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:33:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:51,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:33:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:52,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:53,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:53,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994199157] [2022-11-02 20:33:53,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994199157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:53,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:53,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:33:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499176562] [2022-11-02 20:33:53,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:53,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:33:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:33:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:33:53,746 INFO L87 Difference]: Start difference. First operand 340 states and 452 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:54,407 INFO L93 Difference]: Finished difference Result 983 states and 1375 transitions. [2022-11-02 20:33:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:33:54,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:33:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:54,412 INFO L225 Difference]: With dead ends: 983 [2022-11-02 20:33:54,412 INFO L226 Difference]: Without dead ends: 771 [2022-11-02 20:33:54,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:33:54,413 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 708 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:54,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1321 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 42 Unchecked, 0.3s Time] [2022-11-02 20:33:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-02 20:33:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 348. [2022-11-02 20:33:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.3314121037463977) internal successors, (462), 347 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 462 transitions. [2022-11-02 20:33:54,443 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 462 transitions. Word has length 147 [2022-11-02 20:33:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:54,443 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 462 transitions. [2022-11-02 20:33:54,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 462 transitions. [2022-11-02 20:33:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:33:54,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:54,446 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:54,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:54,670 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1155688143, now seen corresponding path program 1 times [2022-11-02 20:33:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:54,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726467407] [2022-11-02 20:33:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:54,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:54,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:54,674 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:54,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:33:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:55,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:55,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:55,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:56,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:56,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726467407] [2022-11-02 20:33:56,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726467407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:56,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:56,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:33:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241575744] [2022-11-02 20:33:56,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:33:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:33:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:33:56,007 INFO L87 Difference]: Start difference. First operand 348 states and 462 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:56,684 INFO L93 Difference]: Finished difference Result 1121 states and 1544 transitions. [2022-11-02 20:33:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:33:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:33:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:56,688 INFO L225 Difference]: With dead ends: 1121 [2022-11-02 20:33:56,688 INFO L226 Difference]: Without dead ends: 901 [2022-11-02 20:33:56,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:33:56,690 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 994 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:56,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1425 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 107 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-02 20:33:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-02 20:33:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 402. [2022-11-02 20:33:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.319201995012469) internal successors, (529), 401 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 529 transitions. [2022-11-02 20:33:56,740 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 529 transitions. Word has length 147 [2022-11-02 20:33:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:56,741 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 529 transitions. [2022-11-02 20:33:56,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 529 transitions. [2022-11-02 20:33:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:33:56,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:56,744 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:56,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 20:33:56,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:56,959 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:56,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1453099315, now seen corresponding path program 1 times [2022-11-02 20:33:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:56,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130846083] [2022-11-02 20:33:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:56,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:56,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:56,962 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:56,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:33:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:57,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:57,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:57,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:58,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130846083] [2022-11-02 20:33:58,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130846083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:58,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:58,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:33:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503565843] [2022-11-02 20:33:58,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:58,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:33:58,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:58,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:33:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:33:58,515 INFO L87 Difference]: Start difference. First operand 402 states and 529 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:59,441 INFO L93 Difference]: Finished difference Result 1715 states and 2389 transitions. [2022-11-02 20:33:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:33:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:33:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:59,450 INFO L225 Difference]: With dead ends: 1715 [2022-11-02 20:33:59,451 INFO L226 Difference]: Without dead ends: 1545 [2022-11-02 20:33:59,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:33:59,453 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1525 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:59,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 2093 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 129 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2022-11-02 20:33:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-11-02 20:33:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 661. [2022-11-02 20:33:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.3545454545454545) internal successors, (894), 660 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 894 transitions. [2022-11-02 20:33:59,555 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 894 transitions. Word has length 147 [2022-11-02 20:33:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:59,556 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 894 transitions. [2022-11-02 20:33:59,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 894 transitions. [2022-11-02 20:33:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:33:59,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:59,560 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:59,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:59,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:59,775 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -880293323, now seen corresponding path program 1 times [2022-11-02 20:33:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132106957] [2022-11-02 20:33:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:59,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:59,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:59,778 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:34:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:00,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:00,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:00,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:01,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:01,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132106957] [2022-11-02 20:34:01,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132106957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:01,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:01,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 20:34:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039633831] [2022-11-02 20:34:01,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:01,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:34:01,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:34:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:34:01,009 INFO L87 Difference]: Start difference. First operand 661 states and 894 transitions. Second operand has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:01,371 INFO L93 Difference]: Finished difference Result 2134 states and 2966 transitions. [2022-11-02 20:34:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:34:01,371 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:01,377 INFO L225 Difference]: With dead ends: 2134 [2022-11-02 20:34:01,377 INFO L226 Difference]: Without dead ends: 1664 [2022-11-02 20:34:01,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:34:01,379 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 516 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:01,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 979 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-11-02 20:34:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-11-02 20:34:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 735. [2022-11-02 20:34:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.3528610354223434) internal successors, (993), 734 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 993 transitions. [2022-11-02 20:34:01,457 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 993 transitions. Word has length 147 [2022-11-02 20:34:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:01,457 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 993 transitions. [2022-11-02 20:34:01,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 993 transitions. [2022-11-02 20:34:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:01,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:01,460 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:01,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:01,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:01,693 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:01,693 INFO L85 PathProgramCache]: Analyzing trace with hash -436392649, now seen corresponding path program 1 times [2022-11-02 20:34:01,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:01,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315428422] [2022-11-02 20:34:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:01,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:01,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:01,697 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:01,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:34:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:02,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:34:02,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:03,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:04,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:04,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315428422] [2022-11-02 20:34:04,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315428422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:04,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:04,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:34:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004107976] [2022-11-02 20:34:04,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:34:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:34:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:04,917 INFO L87 Difference]: Start difference. First operand 735 states and 993 transitions. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:05,733 INFO L93 Difference]: Finished difference Result 2265 states and 3129 transitions. [2022-11-02 20:34:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:34:05,734 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:05,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:05,741 INFO L225 Difference]: With dead ends: 2265 [2022-11-02 20:34:05,741 INFO L226 Difference]: Without dead ends: 1753 [2022-11-02 20:34:05,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:34:05,744 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 764 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:05,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1367 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 160 Invalid, 0 Unknown, 41 Unchecked, 0.3s Time] [2022-11-02 20:34:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-11-02 20:34:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 747. [2022-11-02 20:34:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.3471849865951742) internal successors, (1005), 746 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1005 transitions. [2022-11-02 20:34:05,841 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1005 transitions. Word has length 147 [2022-11-02 20:34:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:05,842 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1005 transitions. [2022-11-02 20:34:05,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1005 transitions. [2022-11-02 20:34:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:05,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:05,845 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:05,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:06,060 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1829988537, now seen corresponding path program 1 times [2022-11-02 20:34:06,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:06,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927502398] [2022-11-02 20:34:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:06,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:06,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:06,064 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:06,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:34:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:06,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:06,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 49 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:07,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 49 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:07,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:07,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927502398] [2022-11-02 20:34:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927502398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:07,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:07,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:34:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621253694] [2022-11-02 20:34:07,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:07,708 INFO L87 Difference]: Start difference. First operand 747 states and 1005 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:08,717 INFO L93 Difference]: Finished difference Result 2849 states and 3922 transitions. [2022-11-02 20:34:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:34:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:08,725 INFO L225 Difference]: With dead ends: 2849 [2022-11-02 20:34:08,726 INFO L226 Difference]: Without dead ends: 2535 [2022-11-02 20:34:08,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:34:08,728 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1543 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:08,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 2079 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 164 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2022-11-02 20:34:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-11-02 20:34:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1587. [2022-11-02 20:34:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 1.37515762925599) internal successors, (2181), 1586 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2181 transitions. [2022-11-02 20:34:08,970 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2181 transitions. Word has length 147 [2022-11-02 20:34:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:08,971 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2181 transitions. [2022-11-02 20:34:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2181 transitions. [2022-11-02 20:34:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:08,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:08,975 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:09,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:09,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:09,195 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1814469819, now seen corresponding path program 1 times [2022-11-02 20:34:09,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:09,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068636924] [2022-11-02 20:34:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:09,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:09,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:09,200 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:09,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:34:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:09,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:09,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:10,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:10,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:10,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068636924] [2022-11-02 20:34:10,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068636924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:10,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:10,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:34:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896483693] [2022-11-02 20:34:10,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:10,928 INFO L87 Difference]: Start difference. First operand 1587 states and 2181 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:11,788 INFO L93 Difference]: Finished difference Result 4183 states and 5822 transitions. [2022-11-02 20:34:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:34:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:11,797 INFO L225 Difference]: With dead ends: 4183 [2022-11-02 20:34:11,797 INFO L226 Difference]: Without dead ends: 3593 [2022-11-02 20:34:11,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:34:11,799 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 1459 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:11,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2236 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 82 Unchecked, 0.2s Time] [2022-11-02 20:34:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2022-11-02 20:34:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 1727. [2022-11-02 20:34:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.3713789107763614) internal successors, (2367), 1726 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2367 transitions. [2022-11-02 20:34:11,970 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2367 transitions. Word has length 147 [2022-11-02 20:34:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:11,970 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2367 transitions. [2022-11-02 20:34:11,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2367 transitions. [2022-11-02 20:34:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:11,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:11,974 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:11,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:12,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:12,191 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1587011139, now seen corresponding path program 1 times [2022-11-02 20:34:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:12,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56371024] [2022-11-02 20:34:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:12,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:12,193 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:12,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:34:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:12,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:12,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:13,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:13,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:13,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56371024] [2022-11-02 20:34:13,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56371024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:13,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:13,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 20:34:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470243241] [2022-11-02 20:34:13,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:13,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:34:13,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:34:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:34:13,493 INFO L87 Difference]: Start difference. First operand 1727 states and 2367 transitions. Second operand has 11 states, 11 states have (on average 23.09090909090909) internal successors, (254), 11 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:14,088 INFO L93 Difference]: Finished difference Result 6725 states and 9370 transitions. [2022-11-02 20:34:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:34:14,089 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.09090909090909) internal successors, (254), 11 states have internal predecessors, (254), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:14,106 INFO L225 Difference]: With dead ends: 6725 [2022-11-02 20:34:14,106 INFO L226 Difference]: Without dead ends: 5293 [2022-11-02 20:34:14,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:34:14,109 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 895 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:14,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1829 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 76 Unchecked, 0.2s Time] [2022-11-02 20:34:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2022-11-02 20:34:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 2300. [2022-11-02 20:34:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 1.3705959112657677) internal successors, (3151), 2299 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3151 transitions. [2022-11-02 20:34:14,336 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3151 transitions. Word has length 147 [2022-11-02 20:34:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:14,337 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3151 transitions. [2022-11-02 20:34:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.09090909090909) internal successors, (254), 11 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3151 transitions. [2022-11-02 20:34:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:14,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:14,341 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:14,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:14,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:14,565 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash 862588991, now seen corresponding path program 1 times [2022-11-02 20:34:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:14,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139511510] [2022-11-02 20:34:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:14,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:14,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:14,569 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:14,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:34:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:15,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:34:15,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:16,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:18,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:18,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139511510] [2022-11-02 20:34:18,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139511510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:18,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:18,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:34:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259192000] [2022-11-02 20:34:18,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:18,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:34:18,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:34:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:18,558 INFO L87 Difference]: Start difference. First operand 2300 states and 3151 transitions. Second operand has 12 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:19,601 INFO L93 Difference]: Finished difference Result 7741 states and 10747 transitions. [2022-11-02 20:34:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:34:19,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:19,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:19,622 INFO L225 Difference]: With dead ends: 7741 [2022-11-02 20:34:19,623 INFO L226 Difference]: Without dead ends: 6333 [2022-11-02 20:34:19,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:34:19,628 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 894 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:19,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 2032 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 184 Invalid, 0 Unknown, 73 Unchecked, 0.4s Time] [2022-11-02 20:34:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2022-11-02 20:34:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 2486. [2022-11-02 20:34:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.3670020120724347) internal successors, (3397), 2485 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3397 transitions. [2022-11-02 20:34:19,916 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3397 transitions. Word has length 147 [2022-11-02 20:34:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:19,917 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3397 transitions. [2022-11-02 20:34:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3397 transitions. [2022-11-02 20:34:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:19,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:19,921 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:19,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:20,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:20,143 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash 18583489, now seen corresponding path program 1 times [2022-11-02 20:34:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:20,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947286074] [2022-11-02 20:34:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:20,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:20,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:20,146 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:20,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:34:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:20,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:20,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:21,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:21,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:21,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947286074] [2022-11-02 20:34:21,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947286074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:21,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:21,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:34:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627493388] [2022-11-02 20:34:21,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:21,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:21,476 INFO L87 Difference]: Start difference. First operand 2486 states and 3397 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:22,458 INFO L93 Difference]: Finished difference Result 7138 states and 9875 transitions. [2022-11-02 20:34:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:34:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:22,471 INFO L225 Difference]: With dead ends: 7138 [2022-11-02 20:34:22,471 INFO L226 Difference]: Without dead ends: 6032 [2022-11-02 20:34:22,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:34:22,480 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1707 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:22,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 1717 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 111 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2022-11-02 20:34:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2022-11-02 20:34:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 2636. [2022-11-02 20:34:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.3688804554079697) internal successors, (3607), 2635 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3607 transitions. [2022-11-02 20:34:22,843 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3607 transitions. Word has length 147 [2022-11-02 20:34:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:22,844 INFO L495 AbstractCegarLoop]: Abstraction has 2636 states and 3607 transitions. [2022-11-02 20:34:22,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3607 transitions. [2022-11-02 20:34:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:22,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:22,849 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:34:22,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:23,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:23,063 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -53803069, now seen corresponding path program 1 times [2022-11-02 20:34:23,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10178003] [2022-11-02 20:34:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:23,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:23,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:23,068 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:23,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:34:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:23,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 29 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:24,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 29 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:24,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:24,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10178003] [2022-11-02 20:34:24,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10178003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:24,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:24,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:34:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371412332] [2022-11-02 20:34:24,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:24,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:24,815 INFO L87 Difference]: Start difference. First operand 2636 states and 3607 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:25,776 INFO L93 Difference]: Finished difference Result 5392 states and 7438 transitions. [2022-11-02 20:34:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:34:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:25,789 INFO L225 Difference]: With dead ends: 5392 [2022-11-02 20:34:25,789 INFO L226 Difference]: Without dead ends: 4702 [2022-11-02 20:34:25,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:34:25,793 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1006 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:25,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1474 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 131 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-02 20:34:25,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2022-11-02 20:34:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 2920. [2022-11-02 20:34:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2919 states have (on average 1.3754710517300446) internal successors, (4015), 2919 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4015 transitions. [2022-11-02 20:34:26,086 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4015 transitions. Word has length 147 [2022-11-02 20:34:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:26,087 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4015 transitions. [2022-11-02 20:34:26,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4015 transitions. [2022-11-02 20:34:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:26,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:26,092 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:26,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:26,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:26,306 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1332400325, now seen corresponding path program 1 times [2022-11-02 20:34:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725963082] [2022-11-02 20:34:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:26,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:26,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:26,310 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:26,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:34:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:26,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:27,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:27,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:27,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725963082] [2022-11-02 20:34:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725963082] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:27,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:27,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:34:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423186940] [2022-11-02 20:34:27,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:27,525 INFO L87 Difference]: Start difference. First operand 2920 states and 4015 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:28,150 INFO L93 Difference]: Finished difference Result 9841 states and 13607 transitions. [2022-11-02 20:34:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:28,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:28,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:28,174 INFO L225 Difference]: With dead ends: 9841 [2022-11-02 20:34:28,174 INFO L226 Difference]: Without dead ends: 7553 [2022-11-02 20:34:28,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:28,181 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 395 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:28,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 428 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2022-11-02 20:34:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 4094. [2022-11-02 20:34:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 4093 states have (on average 1.3784510139262154) internal successors, (5642), 4093 states have internal predecessors, (5642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 5642 transitions. [2022-11-02 20:34:28,510 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 5642 transitions. Word has length 147 [2022-11-02 20:34:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:28,511 INFO L495 AbstractCegarLoop]: Abstraction has 4094 states and 5642 transitions. [2022-11-02 20:34:28,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 5642 transitions. [2022-11-02 20:34:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:28,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:28,517 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:28,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-02 20:34:28,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:28,731 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1615498437, now seen corresponding path program 1 times [2022-11-02 20:34:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:28,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273226367] [2022-11-02 20:34:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:28,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:28,736 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:28,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:34:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:29,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:29,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 41 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:29,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:30,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:30,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273226367] [2022-11-02 20:34:30,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273226367] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:30,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:30,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:34:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120877429] [2022-11-02 20:34:30,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:30,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:30,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:30,006 INFO L87 Difference]: Start difference. First operand 4094 states and 5642 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:30,417 INFO L93 Difference]: Finished difference Result 8778 states and 12081 transitions. [2022-11-02 20:34:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:30,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:30,428 INFO L225 Difference]: With dead ends: 8778 [2022-11-02 20:34:30,428 INFO L226 Difference]: Without dead ends: 6375 [2022-11-02 20:34:30,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:30,434 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 392 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:30,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 407 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2022-11-02 20:34:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 4094. [2022-11-02 20:34:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 4093 states have (on average 1.367700952846323) internal successors, (5598), 4093 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 5598 transitions. [2022-11-02 20:34:30,822 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 5598 transitions. Word has length 147 [2022-11-02 20:34:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:30,822 INFO L495 AbstractCegarLoop]: Abstraction has 4094 states and 5598 transitions. [2022-11-02 20:34:30,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 5598 transitions. [2022-11-02 20:34:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:30,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:30,829 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:30,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:31,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:31,043 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1842198331, now seen corresponding path program 1 times [2022-11-02 20:34:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:31,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032941459] [2022-11-02 20:34:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:31,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:31,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:31,048 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:31,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:34:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:31,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:31,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:31,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:31,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032941459] [2022-11-02 20:34:31,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032941459] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:31,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:31,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:34:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589527701] [2022-11-02 20:34:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:31,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:31,841 INFO L87 Difference]: Start difference. First operand 4094 states and 5598 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:32,227 INFO L93 Difference]: Finished difference Result 6944 states and 9521 transitions. [2022-11-02 20:34:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:32,233 INFO L225 Difference]: With dead ends: 6944 [2022-11-02 20:34:32,234 INFO L226 Difference]: Without dead ends: 4493 [2022-11-02 20:34:32,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:32,237 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 470 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:32,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 358 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-11-02 20:34:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3564. [2022-11-02 20:34:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.366825708672467) internal successors, (4870), 3563 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4870 transitions. [2022-11-02 20:34:32,577 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4870 transitions. Word has length 147 [2022-11-02 20:34:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:32,577 INFO L495 AbstractCegarLoop]: Abstraction has 3564 states and 4870 transitions. [2022-11-02 20:34:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4870 transitions. [2022-11-02 20:34:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:32,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:32,582 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:34:32,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:32,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:32,799 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash 915003719, now seen corresponding path program 1 times [2022-11-02 20:34:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:32,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281557988] [2022-11-02 20:34:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:32,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:32,804 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:32,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:34:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:33,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:33,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:33,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:33,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:33,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281557988] [2022-11-02 20:34:33,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281557988] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:33,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:33,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:33,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584367637] [2022-11-02 20:34:33,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:33,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:33,511 INFO L87 Difference]: Start difference. First operand 3564 states and 4870 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:33,848 INFO L93 Difference]: Finished difference Result 7108 states and 9673 transitions. [2022-11-02 20:34:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:33,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:33,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:33,856 INFO L225 Difference]: With dead ends: 7108 [2022-11-02 20:34:33,856 INFO L226 Difference]: Without dead ends: 4856 [2022-11-02 20:34:33,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:33,861 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 277 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:33,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 536 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2022-11-02 20:34:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 3564. [2022-11-02 20:34:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.3561605388717373) internal successors, (4832), 3563 states have internal predecessors, (4832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4832 transitions. [2022-11-02 20:34:34,104 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4832 transitions. Word has length 147 [2022-11-02 20:34:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:34,105 INFO L495 AbstractCegarLoop]: Abstraction has 3564 states and 4832 transitions. [2022-11-02 20:34:34,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4832 transitions. [2022-11-02 20:34:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:34,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:34,109 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:34,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:34,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:34,331 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1475703497, now seen corresponding path program 1 times [2022-11-02 20:34:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:34,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692881586] [2022-11-02 20:34:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:34,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:34,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:34,333 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:34,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:34:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:34,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:34,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:34,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:34,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:34,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692881586] [2022-11-02 20:34:34,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692881586] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:34,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:34,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115219870] [2022-11-02 20:34:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:34,983 INFO L87 Difference]: Start difference. First operand 3564 states and 4832 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:35,283 INFO L93 Difference]: Finished difference Result 5582 states and 7538 transitions. [2022-11-02 20:34:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:35,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:35,287 INFO L225 Difference]: With dead ends: 5582 [2022-11-02 20:34:35,288 INFO L226 Difference]: Without dead ends: 3382 [2022-11-02 20:34:35,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:35,291 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 278 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:35,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 381 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2022-11-02 20:34:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3034. [2022-11-02 20:34:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.33728981206726) internal successors, (4056), 3033 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4056 transitions. [2022-11-02 20:34:35,452 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4056 transitions. Word has length 147 [2022-11-02 20:34:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:35,452 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4056 transitions. [2022-11-02 20:34:35,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4056 transitions. [2022-11-02 20:34:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:35,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:35,456 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:35,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:35,671 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1698895159, now seen corresponding path program 1 times [2022-11-02 20:34:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:35,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867758597] [2022-11-02 20:34:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:35,675 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:35,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:34:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:36,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:36,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 47 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:36,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:36,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:36,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867758597] [2022-11-02 20:34:36,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867758597] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:36,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:36,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60965362] [2022-11-02 20:34:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:36,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:36,675 INFO L87 Difference]: Start difference. First operand 3034 states and 4056 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:37,246 INFO L93 Difference]: Finished difference Result 6902 states and 9180 transitions. [2022-11-02 20:34:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:37,254 INFO L225 Difference]: With dead ends: 6902 [2022-11-02 20:34:37,255 INFO L226 Difference]: Without dead ends: 4336 [2022-11-02 20:34:37,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:37,260 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 268 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:37,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 556 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2022-11-02 20:34:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3034. [2022-11-02 20:34:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.3227827233761953) internal successors, (4012), 3033 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4012 transitions. [2022-11-02 20:34:37,453 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4012 transitions. Word has length 147 [2022-11-02 20:34:37,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:37,454 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4012 transitions. [2022-11-02 20:34:37,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4012 transitions. [2022-11-02 20:34:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:37,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:37,457 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:37,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-02 20:34:37,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:37,658 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:37,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2051983541, now seen corresponding path program 1 times [2022-11-02 20:34:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:37,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377391744] [2022-11-02 20:34:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:37,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:37,662 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:37,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:34:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:38,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:38,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:38,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:38,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:38,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377391744] [2022-11-02 20:34:38,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377391744] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:38,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:38,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:38,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318969715] [2022-11-02 20:34:38,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:38,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:38,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:38,355 INFO L87 Difference]: Start difference. First operand 3034 states and 4012 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:38,721 INFO L93 Difference]: Finished difference Result 5979 states and 7861 transitions. [2022-11-02 20:34:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:38,726 INFO L225 Difference]: With dead ends: 5979 [2022-11-02 20:34:38,726 INFO L226 Difference]: Without dead ends: 4404 [2022-11-02 20:34:38,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:38,729 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 266 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:38,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 536 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2022-11-02 20:34:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 3034. [2022-11-02 20:34:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.3082756346851303) internal successors, (3968), 3033 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3968 transitions. [2022-11-02 20:34:38,915 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3968 transitions. Word has length 147 [2022-11-02 20:34:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:38,915 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 3968 transitions. [2022-11-02 20:34:38,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3968 transitions. [2022-11-02 20:34:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:38,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:38,917 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:38,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:39,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:39,118 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1345590477, now seen corresponding path program 1 times [2022-11-02 20:34:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:39,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740907822] [2022-11-02 20:34:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:39,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:39,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:39,122 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:39,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:34:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:39,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:39,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 41 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:39,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:39,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:39,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740907822] [2022-11-02 20:34:39,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740907822] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:39,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:39,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:39,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845232988] [2022-11-02 20:34:39,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:39,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:39,935 INFO L87 Difference]: Start difference. First operand 3034 states and 3968 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:40,282 INFO L93 Difference]: Finished difference Result 5553 states and 7229 transitions. [2022-11-02 20:34:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:40,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:40,287 INFO L225 Difference]: With dead ends: 5553 [2022-11-02 20:34:40,288 INFO L226 Difference]: Without dead ends: 3986 [2022-11-02 20:34:40,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:40,291 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 260 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:40,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 475 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2022-11-02 20:34:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3034. [2022-11-02 20:34:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.2937685459940653) internal successors, (3924), 3033 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3924 transitions. [2022-11-02 20:34:40,473 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3924 transitions. Word has length 147 [2022-11-02 20:34:40,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:40,473 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 3924 transitions. [2022-11-02 20:34:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3924 transitions. [2022-11-02 20:34:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:40,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:40,497 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:40,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-02 20:34:40,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:40,698 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:40,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:40,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1769237199, now seen corresponding path program 1 times [2022-11-02 20:34:40,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:40,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131292846] [2022-11-02 20:34:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:40,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:40,703 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:40,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:34:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:41,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:41,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:41,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:41,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:41,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131292846] [2022-11-02 20:34:41,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131292846] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:41,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:41,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035957664] [2022-11-02 20:34:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:41,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:41,658 INFO L87 Difference]: Start difference. First operand 3034 states and 3924 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:42,133 INFO L93 Difference]: Finished difference Result 7008 states and 9044 transitions. [2022-11-02 20:34:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:42,137 INFO L225 Difference]: With dead ends: 7008 [2022-11-02 20:34:42,137 INFO L226 Difference]: Without dead ends: 4570 [2022-11-02 20:34:42,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:42,140 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 254 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:42,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 583 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2022-11-02 20:34:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 3034. [2022-11-02 20:34:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.2878338278931751) internal successors, (3906), 3033 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3906 transitions. [2022-11-02 20:34:42,282 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3906 transitions. Word has length 147 [2022-11-02 20:34:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:42,283 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 3906 transitions. [2022-11-02 20:34:42,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3906 transitions. [2022-11-02 20:34:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:42,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:42,285 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:42,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-02 20:34:42,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:42,485 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:42,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:42,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1824130223, now seen corresponding path program 1 times [2022-11-02 20:34:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:42,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572005602] [2022-11-02 20:34:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:42,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:42,488 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:42,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:34:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:42,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:42,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:43,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:43,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:43,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572005602] [2022-11-02 20:34:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572005602] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:43,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:43,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596237855] [2022-11-02 20:34:43,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:43,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:43,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:43,258 INFO L87 Difference]: Start difference. First operand 3034 states and 3906 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:43,593 INFO L93 Difference]: Finished difference Result 6097 states and 7851 transitions. [2022-11-02 20:34:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:43,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:43,597 INFO L225 Difference]: With dead ends: 6097 [2022-11-02 20:34:43,597 INFO L226 Difference]: Without dead ends: 4586 [2022-11-02 20:34:43,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:43,600 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 251 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:43,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 563 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2022-11-02 20:34:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 3034. [2022-11-02 20:34:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.2832179360369271) internal successors, (3892), 3033 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3892 transitions. [2022-11-02 20:34:43,749 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3892 transitions. Word has length 147 [2022-11-02 20:34:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:43,750 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 3892 transitions. [2022-11-02 20:34:43,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3892 transitions. [2022-11-02 20:34:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:43,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:43,752 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:43,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-02 20:34:43,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:43,953 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash 99097811, now seen corresponding path program 1 times [2022-11-02 20:34:43,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:43,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101999713] [2022-11-02 20:34:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:43,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:43,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:43,956 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:43,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:34:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:44,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:44,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:44,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:44,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:44,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101999713] [2022-11-02 20:34:44,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101999713] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:44,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:44,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036648547] [2022-11-02 20:34:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:44,788 INFO L87 Difference]: Start difference. First operand 3034 states and 3892 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:45,100 INFO L93 Difference]: Finished difference Result 5859 states and 7515 transitions. [2022-11-02 20:34:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:45,105 INFO L225 Difference]: With dead ends: 5859 [2022-11-02 20:34:45,105 INFO L226 Difference]: Without dead ends: 4356 [2022-11-02 20:34:45,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:45,107 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 246 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:45,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 542 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2022-11-02 20:34:45,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 3034. [2022-11-02 20:34:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.2786020441806791) internal successors, (3878), 3033 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3878 transitions. [2022-11-02 20:34:45,382 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3878 transitions. Word has length 147 [2022-11-02 20:34:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:45,382 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 3878 transitions. [2022-11-02 20:34:45,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3878 transitions. [2022-11-02 20:34:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:45,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:45,384 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:45,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:45,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:45,585 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 239646421, now seen corresponding path program 1 times [2022-11-02 20:34:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894442357] [2022-11-02 20:34:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:45,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:45,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:45,588 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:45,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:34:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:46,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:46,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:46,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:47,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894442357] [2022-11-02 20:34:47,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894442357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:47,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:47,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 20:34:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945784214] [2022-11-02 20:34:47,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:47,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:34:47,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:47,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:34:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:34:47,239 INFO L87 Difference]: Start difference. First operand 3034 states and 3878 transitions. Second operand has 11 states, 11 states have (on average 24.727272727272727) internal successors, (272), 11 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:48,052 INFO L93 Difference]: Finished difference Result 7718 states and 9924 transitions. [2022-11-02 20:34:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:34:48,054 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.727272727272727) internal successors, (272), 11 states have internal predecessors, (272), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:48,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:48,062 INFO L225 Difference]: With dead ends: 7718 [2022-11-02 20:34:48,062 INFO L226 Difference]: Without dead ends: 5708 [2022-11-02 20:34:48,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:48,068 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 690 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:48,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 846 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-02 20:34:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2022-11-02 20:34:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 3208. [2022-11-02 20:34:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.2743997505456812) internal successors, (4087), 3207 states have internal predecessors, (4087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 4087 transitions. [2022-11-02 20:34:48,307 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 4087 transitions. Word has length 147 [2022-11-02 20:34:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:48,308 INFO L495 AbstractCegarLoop]: Abstraction has 3208 states and 4087 transitions. [2022-11-02 20:34:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.727272727272727) internal successors, (272), 11 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 4087 transitions. [2022-11-02 20:34:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:48,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:48,310 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:48,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:48,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:48,511 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash 662348247, now seen corresponding path program 1 times [2022-11-02 20:34:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:48,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85339689] [2022-11-02 20:34:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:48,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:48,517 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:48,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 20:34:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:49,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:34:49,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 19 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:50,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 19 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:52,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85339689] [2022-11-02 20:34:52,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85339689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:52,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:52,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:34:52,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953339168] [2022-11-02 20:34:52,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:52,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:34:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:34:52,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:52,965 INFO L87 Difference]: Start difference. First operand 3208 states and 4087 transitions. Second operand has 12 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:53,702 INFO L93 Difference]: Finished difference Result 8935 states and 11414 transitions. [2022-11-02 20:34:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:34:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:53,710 INFO L225 Difference]: With dead ends: 8935 [2022-11-02 20:34:53,710 INFO L226 Difference]: Without dead ends: 6763 [2022-11-02 20:34:53,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:53,714 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 614 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:53,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1106 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 113 Unchecked, 0.2s Time] [2022-11-02 20:34:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-02 20:34:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 3309. [2022-11-02 20:34:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.2681378476420797) internal successors, (4195), 3308 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4195 transitions. [2022-11-02 20:34:54,123 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4195 transitions. Word has length 147 [2022-11-02 20:34:54,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:54,124 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 4195 transitions. [2022-11-02 20:34:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4195 transitions. [2022-11-02 20:34:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:54,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:54,127 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:54,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-02 20:34:54,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:54,328 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1026595495, now seen corresponding path program 1 times [2022-11-02 20:34:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220193765] [2022-11-02 20:34:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:54,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:54,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:54,334 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:54,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 20:34:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:54,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:54,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:55,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:56,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:56,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220193765] [2022-11-02 20:34:56,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220193765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:56,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:56,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:34:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612999943] [2022-11-02 20:34:56,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:56,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:56,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:56,213 INFO L87 Difference]: Start difference. First operand 3309 states and 4195 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:57,171 INFO L93 Difference]: Finished difference Result 9113 states and 11661 transitions. [2022-11-02 20:34:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:34:57,172 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:57,179 INFO L225 Difference]: With dead ends: 9113 [2022-11-02 20:34:57,179 INFO L226 Difference]: Without dead ends: 7501 [2022-11-02 20:34:57,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:34:57,183 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1327 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:57,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1958 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 142 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2022-11-02 20:34:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-11-02 20:34:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 3477. [2022-11-02 20:34:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3477 states, 3476 states have (on average 1.264384349827388) internal successors, (4395), 3476 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 4395 transitions. [2022-11-02 20:34:57,406 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 4395 transitions. Word has length 147 [2022-11-02 20:34:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:57,406 INFO L495 AbstractCegarLoop]: Abstraction has 3477 states and 4395 transitions. [2022-11-02 20:34:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 4395 transitions. [2022-11-02 20:34:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:57,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:57,408 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:57,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-02 20:34:57,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:57,609 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:57,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1680023899, now seen corresponding path program 1 times [2022-11-02 20:34:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:57,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066322286] [2022-11-02 20:34:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:57,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:57,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:57,613 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:57,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 20:34:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:58,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:58,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:58,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:34:58,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:58,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066322286] [2022-11-02 20:34:58,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066322286] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:58,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:58,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:34:58,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652678305] [2022-11-02 20:34:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:58,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:58,490 INFO L87 Difference]: Start difference. First operand 3477 states and 4395 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:58,958 INFO L93 Difference]: Finished difference Result 8034 states and 10154 transitions. [2022-11-02 20:34:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:34:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:58,965 INFO L225 Difference]: With dead ends: 8034 [2022-11-02 20:34:58,965 INFO L226 Difference]: Without dead ends: 5382 [2022-11-02 20:34:58,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:58,969 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 241 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:58,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 583 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2022-11-02 20:34:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 3477. [2022-11-02 20:34:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3477 states, 3476 states have (on average 1.2603567318757192) internal successors, (4381), 3476 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 4381 transitions. [2022-11-02 20:34:59,212 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 4381 transitions. Word has length 147 [2022-11-02 20:34:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:59,212 INFO L495 AbstractCegarLoop]: Abstraction has 3477 states and 4381 transitions. [2022-11-02 20:34:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 4381 transitions. [2022-11-02 20:34:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:34:59,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:59,216 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:59,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:59,417 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 400160221, now seen corresponding path program 1 times [2022-11-02 20:34:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:59,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819520030] [2022-11-02 20:34:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:59,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:59,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:59,421 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:59,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 20:34:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:59,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:34:59,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:00,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:01,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:01,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819520030] [2022-11-02 20:35:01,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819520030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:01,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:01,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:35:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558482150] [2022-11-02 20:35:01,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:35:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:35:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:35:01,159 INFO L87 Difference]: Start difference. First operand 3477 states and 4381 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:02,145 INFO L93 Difference]: Finished difference Result 9089 states and 11571 transitions. [2022-11-02 20:35:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:35:02,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 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 147 [2022-11-02 20:35:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:02,152 INFO L225 Difference]: With dead ends: 9089 [2022-11-02 20:35:02,152 INFO L226 Difference]: Without dead ends: 7477 [2022-11-02 20:35:02,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:35:02,155 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1495 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:02,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1997 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 151 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2022-11-02 20:35:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2022-11-02 20:35:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 3501. [2022-11-02 20:35:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 1.2591428571428571) internal successors, (4407), 3500 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4407 transitions. [2022-11-02 20:35:02,364 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4407 transitions. Word has length 147 [2022-11-02 20:35:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:02,365 INFO L495 AbstractCegarLoop]: Abstraction has 3501 states and 4407 transitions. [2022-11-02 20:35:02,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4407 transitions. [2022-11-02 20:35:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:35:02,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:02,366 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:02,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:02,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:02,567 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash -186645793, now seen corresponding path program 1 times [2022-11-02 20:35:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:02,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547816554] [2022-11-02 20:35:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:02,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:02,570 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:02,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 20:35:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:02,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:35:02,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:35:03,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:35:03,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547816554] [2022-11-02 20:35:03,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547816554] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:03,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:35:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:35:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102838085] [2022-11-02 20:35:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:03,445 INFO L87 Difference]: Start difference. First operand 3501 states and 4407 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:03,967 INFO L93 Difference]: Finished difference Result 8074 states and 10164 transitions. [2022-11-02 20:35:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:35:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:35:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:03,974 INFO L225 Difference]: With dead ends: 8074 [2022-11-02 20:35:03,974 INFO L226 Difference]: Without dead ends: 5430 [2022-11-02 20:35:03,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:35:03,978 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 235 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:03,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 617 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:35:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2022-11-02 20:35:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 3501. [2022-11-02 20:35:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 1.2551428571428571) internal successors, (4393), 3500 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4393 transitions. [2022-11-02 20:35:04,194 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4393 transitions. Word has length 147 [2022-11-02 20:35:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:04,195 INFO L495 AbstractCegarLoop]: Abstraction has 3501 states and 4393 transitions. [2022-11-02 20:35:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4393 transitions. [2022-11-02 20:35:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:35:04,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:04,198 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:04,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-02 20:35:04,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:04,399 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 514418785, now seen corresponding path program 1 times [2022-11-02 20:35:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578820784] [2022-11-02 20:35:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:04,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:04,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:04,402 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:04,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 20:35:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:04,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:35:04,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:35:05,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:35:05,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:05,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578820784] [2022-11-02 20:35:05,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578820784] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:05,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:35:05,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:35:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704956487] [2022-11-02 20:35:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:05,199 INFO L87 Difference]: Start difference. First operand 3501 states and 4393 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:05,561 INFO L93 Difference]: Finished difference Result 8062 states and 10121 transitions. [2022-11-02 20:35:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:35:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:35:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:05,567 INFO L225 Difference]: With dead ends: 8062 [2022-11-02 20:35:05,567 INFO L226 Difference]: Without dead ends: 5434 [2022-11-02 20:35:05,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:35:05,570 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 233 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:05,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 591 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:35:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2022-11-02 20:35:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 3501. [2022-11-02 20:35:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 1.2511428571428571) internal successors, (4379), 3500 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4379 transitions. [2022-11-02 20:35:05,855 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4379 transitions. Word has length 147 [2022-11-02 20:35:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:05,856 INFO L495 AbstractCegarLoop]: Abstraction has 3501 states and 4379 transitions. [2022-11-02 20:35:05,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4379 transitions. [2022-11-02 20:35:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:35:05,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:05,859 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:05,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-02 20:35:06,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:06,076 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1194477155, now seen corresponding path program 1 times [2022-11-02 20:35:06,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:06,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682663166] [2022-11-02 20:35:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:06,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:06,078 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:06,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 20:35:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:06,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:35:06,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:35:06,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:35:06,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:06,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682663166] [2022-11-02 20:35:06,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682663166] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:06,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:35:06,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:35:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430898783] [2022-11-02 20:35:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:06,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:06,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:06,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:06,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:06,946 INFO L87 Difference]: Start difference. First operand 3501 states and 4379 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:07,264 INFO L93 Difference]: Finished difference Result 5355 states and 6735 transitions. [2022-11-02 20:35:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:35:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 147 [2022-11-02 20:35:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:07,268 INFO L225 Difference]: With dead ends: 5355 [2022-11-02 20:35:07,268 INFO L226 Difference]: Without dead ends: 2875 [2022-11-02 20:35:07,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:35:07,271 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 241 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:07,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 592 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:35:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-11-02 20:35:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2407. [2022-11-02 20:35:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2406 states have (on average 1.2614297589359933) internal successors, (3035), 2406 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 3035 transitions. [2022-11-02 20:35:07,375 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 3035 transitions. Word has length 147 [2022-11-02 20:35:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:07,375 INFO L495 AbstractCegarLoop]: Abstraction has 2407 states and 3035 transitions. [2022-11-02 20:35:07,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 3035 transitions. [2022-11-02 20:35:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:35:07,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:07,378 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:07,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-02 20:35:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:07,578 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1325482779, now seen corresponding path program 1 times [2022-11-02 20:35:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:07,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539764404] [2022-11-02 20:35:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:07,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:07,582 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:07,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 20:35:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:08,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-02 20:35:08,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:35:11,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:35:45,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539764404] [2022-11-02 20:35:45,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539764404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:45,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:45,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2022-11-02 20:35:45,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667617507] [2022-11-02 20:35:45,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:45,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-02 20:35:45,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:45,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-02 20:35:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3849, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 20:35:45,034 INFO L87 Difference]: Start difference. First operand 2407 states and 3035 transitions. Second operand has 64 states, 64 states have (on average 4.0625) internal successors, (260), 64 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:54,938 INFO L93 Difference]: Finished difference Result 4148 states and 5291 transitions. [2022-11-02 20:35:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-02 20:35:54,939 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.0625) internal successors, (260), 64 states have internal predecessors, (260), 0 states have call successors, (0), 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 147 [2022-11-02 20:35:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:54,943 INFO L225 Difference]: With dead ends: 4148 [2022-11-02 20:35:54,943 INFO L226 Difference]: Without dead ends: 4146 [2022-11-02 20:35:54,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2237 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=1296, Invalid=12044, Unknown=0, NotChecked=0, Total=13340 [2022-11-02 20:35:54,946 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1470 mSDsluCounter, 12389 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 12765 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2058 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:54,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 12765 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 768 Invalid, 0 Unknown, 2058 Unchecked, 1.1s Time] [2022-11-02 20:35:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2022-11-02 20:35:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 2524. [2022-11-02 20:35:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 1.26119698771304) internal successors, (3182), 2523 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3182 transitions. [2022-11-02 20:35:55,068 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3182 transitions. Word has length 147 [2022-11-02 20:35:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:55,069 INFO L495 AbstractCegarLoop]: Abstraction has 2524 states and 3182 transitions. [2022-11-02 20:35:55,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.0625) internal successors, (260), 64 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3182 transitions. [2022-11-02 20:35:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:35:55,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:55,071 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:55,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-02 20:35:55,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:55,271 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -778474477, now seen corresponding path program 1 times [2022-11-02 20:35:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:55,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096897871] [2022-11-02 20:35:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:55,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:55,274 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:55,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-02 20:35:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:55,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:35:55,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:35:56,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:35:56,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096897871] [2022-11-02 20:35:56,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096897871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:56,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:56,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923239434] [2022-11-02 20:35:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:56,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:56,041 INFO L87 Difference]: Start difference. First operand 2524 states and 3182 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:56,159 INFO L93 Difference]: Finished difference Result 4219 states and 5346 transitions. [2022-11-02 20:35:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 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 147 [2022-11-02 20:35:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:56,163 INFO L225 Difference]: With dead ends: 4219 [2022-11-02 20:35:56,163 INFO L226 Difference]: Without dead ends: 2522 [2022-11-02 20:35:56,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:56,165 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 57 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:56,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 534 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-11-02 20:35:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-11-02 20:35:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2522. [2022-11-02 20:35:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 1.261007536691789) internal successors, (3179), 2521 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3179 transitions. [2022-11-02 20:35:56,257 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3179 transitions. Word has length 147 [2022-11-02 20:35:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:56,257 INFO L495 AbstractCegarLoop]: Abstraction has 2522 states and 3179 transitions. [2022-11-02 20:35:56,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3179 transitions. [2022-11-02 20:35:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:35:56,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:56,260 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:56,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153bc4c3-eefb-41b1-a5fe-f48190349b36/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0