./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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 a57a912aff80ad559a0b614e92a359dd4b5edd9175df70bc4234fe728f540265 --- 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 20:47:41,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:41,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:41,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:41,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:41,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:41,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:41,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:41,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:41,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:41,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:41,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:41,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:41,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:41,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:41,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:41,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:41,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:41,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:41,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:41,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:41,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:41,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:41,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:41,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:41,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:41,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:41,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:41,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:41,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:41,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:41,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:41,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:41,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:41,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:41,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:41,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:41,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:41,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:41,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:41,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:41,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:47:41,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:41,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:41,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:41,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:41,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:47:41,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:47:41,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:41,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:41,236 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:41,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:41,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:47:41,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:41,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:47:41,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:47:41,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:47:41,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:41,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:41,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:47:41,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:41,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:41,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:47:41,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:41,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:41,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:47:41,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:47:41,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:47:41,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:47:41,242 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:47:41,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:47:41,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:47:41,242 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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a57a912aff80ad559a0b614e92a359dd4b5edd9175df70bc4234fe728f540265 [2022-11-02 20:47:41,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:41,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:41,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:41,567 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:41,568 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:41,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c [2022-11-02 20:47:41,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/174c87e07/115bccea89274bd6aa42edc9d6ab6a93/FLAGbcec2353e [2022-11-02 20:47:42,083 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:42,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c [2022-11-02 20:47:42,092 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/174c87e07/115bccea89274bd6aa42edc9d6ab6a93/FLAGbcec2353e [2022-11-02 20:47:42,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/174c87e07/115bccea89274bd6aa42edc9d6ab6a93 [2022-11-02 20:47:42,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:42,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:42,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:42,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:42,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:42,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5390f4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42, skipping insertion in model container [2022-11-02 20:47:42,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:42,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:42,689 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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c[1107,1120] [2022-11-02 20:47:42,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:42,753 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:42,763 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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c[1107,1120] [2022-11-02 20:47:42,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:42,816 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:42,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42 WrapperNode [2022-11-02 20:47:42,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:42,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:42,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:42,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:42,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,880 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 234 [2022-11-02 20:47:42,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:42,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:42,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:42,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:42,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:42,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:42,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:42,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:42,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (1/1) ... [2022-11-02 20:47:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:42,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:42,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:43,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:43,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:43,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:43,600 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:43,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:43,609 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:47:43,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:43 BoogieIcfgContainer [2022-11-02 20:47:43,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:43,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:47:43,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:47:43,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:47:43,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:42" (1/3) ... [2022-11-02 20:47:43,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f80128f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:43, skipping insertion in model container [2022-11-02 20:47:43,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:42" (2/3) ... [2022-11-02 20:47:43,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f80128f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:43, skipping insertion in model container [2022-11-02 20:47:43,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:43" (3/3) ... [2022-11-02 20:47:43,623 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal54.c [2022-11-02 20:47:43,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:47:43,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:47:43,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:47:43,714 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;@6761bf64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:47:43,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:47:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:43,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:43,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:43,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:47:43,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:43,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884088893] [2022-11-02 20:47:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:44,558 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 20:47:44,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:44,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884088893] [2022-11-02 20:47:44,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884088893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:44,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:44,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998200325] [2022-11-02 20:47:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:44,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:44,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:44,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:44,601 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:44,666 INFO L93 Difference]: Finished difference Result 106 states and 158 transitions. [2022-11-02 20:47:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:44,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:47:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:44,683 INFO L225 Difference]: With dead ends: 106 [2022-11-02 20:47:44,683 INFO L226 Difference]: Without dead ends: 69 [2022-11-02 20:47:44,686 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 20:47:44,690 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 90 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:44,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-02 20:47:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2022-11-02 20:47:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-11-02 20:47:44,724 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 9 [2022-11-02 20:47:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:44,725 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-11-02 20:47:44,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-11-02 20:47:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:44,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:44,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:44,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:47:44,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:47:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:44,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655557526] [2022-11-02 20:47:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:44,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,051 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 20:47:45,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:45,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655557526] [2022-11-02 20:47:45,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655557526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:45,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:45,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983082585] [2022-11-02 20:47:45,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:45,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:45,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:45,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:45,056 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:45,121 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2022-11-02 20:47:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:47:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:45,123 INFO L225 Difference]: With dead ends: 104 [2022-11-02 20:47:45,123 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:47:45,124 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 20:47:45,126 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 87 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:45,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 138 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:47:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2022-11-02 20:47:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-02 20:47:45,137 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-11-02 20:47:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:45,138 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-02 20:47:45,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-02 20:47:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:45,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:45,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:45,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:47:45,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 20:47:45,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:45,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858735641] [2022-11-02 20:47:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:45,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:45,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:45,553 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:47:45,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:47:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:47:45,568 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:47:45,574 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:47:45,633 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:47:45,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:47:45 BoogieIcfgContainer [2022-11-02 20:47:45,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:47:45,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:47:45,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:47:45,644 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:47:45,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:43" (3/4) ... [2022-11-02 20:47:45,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:47:45,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:47:45,657 INFO L158 Benchmark]: Toolchain (without parser) took 3191.53ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 87.9MB in the beginning and 62.9MB in the end (delta: 25.0MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2022-11-02 20:47:45,657 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:47:45,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.67ms. Allocated memory is still 121.6MB. Free memory was 87.9MB in the beginning and 94.0MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:47:45,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.04ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 90.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:47:45,670 INFO L158 Benchmark]: Boogie Preprocessor took 38.88ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:47:45,670 INFO L158 Benchmark]: RCFGBuilder took 691.33ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 64.6MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-02 20:47:45,671 INFO L158 Benchmark]: TraceAbstraction took 2028.61ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 63.6MB in the beginning and 62.9MB in the end (delta: 716.8kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-11-02 20:47:45,671 INFO L158 Benchmark]: Witness Printer took 11.32ms. Allocated memory is still 146.8MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:47:45,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.67ms. Allocated memory is still 121.6MB. Free memory was 87.9MB in the beginning and 94.0MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.04ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 90.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.88ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 691.33ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 64.6MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2028.61ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 63.6MB in the beginning and 62.9MB in the end (delta: 716.8kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Witness Printer took 11.32ms. Allocated memory is still 146.8MB. Free memory is still 62.9MB. 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 118, overapproximation of bitwiseOr at line 107, overapproximation of bitwiseAnd at line 101. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L31] const SORT_26 mask_SORT_26 = (SORT_26)-1 >> (sizeof(SORT_26) * 8 - 2); [L32] const SORT_26 msb_SORT_26 = (SORT_26)1 << (2 - 1); [L34] const SORT_1 var_11 = 0; [L35] const SORT_5 var_15 = 0; [L36] const SORT_5 var_21 = 2; [L37] const SORT_5 var_23 = 1; [L38] const SORT_1 var_39 = 1; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_1 input_4; [L43] SORT_5 input_6; [L44] SORT_5 input_7; [L45] SORT_1 input_8; [L46] SORT_5 input_9; [L47] SORT_5 input_10; [L49] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_5 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L54] SORT_1 init_13_arg_1 = var_11; [L55] state_12 = init_13_arg_1 [L56] SORT_5 init_17_arg_1 = var_15; [L57] state_16 = init_17_arg_1 [L58] SORT_1 init_19_arg_1 = var_11; [L59] state_18 = init_19_arg_1 [L60] SORT_5 init_30_arg_1 = var_15; [L61] state_29 = init_30_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_15=0, var_21=2, var_23=1, var_39=1] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_2 = input_2 & mask_SORT_1 [L66] input_3 = __VERIFIER_nondet_uchar() [L67] input_3 = input_3 & mask_SORT_1 [L68] input_4 = __VERIFIER_nondet_uchar() [L69] input_6 = __VERIFIER_nondet_uchar() [L70] input_7 = __VERIFIER_nondet_uchar() [L71] input_8 = __VERIFIER_nondet_uchar() [L72] input_9 = __VERIFIER_nondet_uchar() [L73] input_10 = __VERIFIER_nondet_uchar() [L76] SORT_1 var_14_arg_0 = state_12; [L77] SORT_1 var_14 = ~var_14_arg_0; [L78] SORT_1 var_20_arg_0 = state_18; [L79] SORT_5 var_20_arg_1 = state_16; [L80] SORT_5 var_20_arg_2 = input_7; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=2, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=2, var_21=2, var_23=1, var_39=1] [L81] EXPR var_20_arg_0 ? var_20_arg_1 : var_20_arg_2 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=2, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20_arg_0=0, var_20_arg_0 ? var_20_arg_1 : var_20_arg_2=2, var_20_arg_1=0, var_20_arg_2=2, var_21=2, var_23=1, var_39=1] [L81] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; [L82] var_20 = var_20 & mask_SORT_5 [L83] SORT_5 var_24_arg_0 = var_20; [L84] SORT_5 var_24_arg_1 = var_23; [L85] SORT_1 var_24 = var_24_arg_0 == var_24_arg_1; [L86] SORT_1 var_25_arg_0 = var_24; [L87] SORT_1 var_25 = ~var_25_arg_0; [L88] SORT_5 var_22_arg_0 = var_20; [L89] SORT_5 var_22_arg_1 = var_21; [L90] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L91] SORT_1 var_27_arg_0 = var_25; [L92] SORT_1 var_27_arg_1 = var_22; [L93] SORT_26 var_27 = ((SORT_26)var_27_arg_0 << 1) | var_27_arg_1; [L94] var_27 = var_27 & mask_SORT_26 [L95] SORT_26 var_28_arg_0 = var_27; [L96] SORT_1 var_28 = var_28_arg_0 == mask_SORT_26; [L97] SORT_1 var_31_arg_0 = state_18; [L98] SORT_5 var_31_arg_1 = state_29; [L99] SORT_5 var_31_arg_2 = input_7; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=2, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20=2, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=2, var_21=2, var_22=1, var_22_arg_0=2, var_22_arg_1=2, var_23=1, var_24=0, var_24_arg_0=2, var_24_arg_1=1, var_25=128, var_25_arg_0=0, var_27=0, var_27_arg_0=128, var_27_arg_1=1, var_28=0, var_28_arg_0=0, var_31_arg_0=0, var_31_arg_1=0, var_31_arg_2=2, var_39=1] [L100] EXPR var_31_arg_0 ? var_31_arg_1 : var_31_arg_2 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=2, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20=2, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=2, var_21=2, var_22=1, var_22_arg_0=2, var_22_arg_1=2, var_23=1, var_24=0, var_24_arg_0=2, var_24_arg_1=1, var_25=128, var_25_arg_0=0, var_27=0, var_27_arg_0=128, var_27_arg_1=1, var_28=0, var_28_arg_0=0, var_31_arg_0=0, var_31_arg_0 ? var_31_arg_1 : var_31_arg_2=2, var_31_arg_1=0, var_31_arg_2=2, var_39=1] [L100] SORT_5 var_31 = var_31_arg_0 ? var_31_arg_1 : var_31_arg_2; [L101] var_31 = var_31 & mask_SORT_5 [L102] SORT_5 var_32_arg_0 = var_31; [L103] SORT_5 var_32_arg_1 = var_21; [L104] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L105] SORT_1 var_33_arg_0 = var_25; [L106] SORT_1 var_33_arg_1 = var_32; [L107] SORT_26 var_33 = ((SORT_26)var_33_arg_0 << 1) | var_33_arg_1; [L108] var_33 = var_33 & mask_SORT_26 [L109] SORT_26 var_34_arg_0 = var_33; [L110] SORT_1 var_34 = var_34_arg_0 == mask_SORT_26; [L111] SORT_1 var_35_arg_0 = var_28; [L112] SORT_1 var_35_arg_1 = var_34; [L113] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L114] SORT_1 var_36_arg_0 = var_14; [L115] SORT_1 var_36_arg_1 = var_35; [L116] SORT_1 var_36 = var_36_arg_0 | var_36_arg_1; [L117] SORT_1 var_40_arg_0 = var_36; [L118] SORT_1 var_40 = ~var_40_arg_0; [L119] SORT_1 var_41_arg_0 = var_39; [L120] SORT_1 var_41_arg_1 = var_40; [L121] SORT_1 var_41 = var_41_arg_0 & var_41_arg_1; [L122] var_41 = var_41 & mask_SORT_1 [L123] SORT_1 bad_42_arg_0 = var_41; [L124] CALL __VERIFIER_assert(!(bad_42_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, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 275 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 96 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 20:47:45,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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 a57a912aff80ad559a0b614e92a359dd4b5edd9175df70bc4234fe728f540265 --- 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 20:47:48,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:48,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:48,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:48,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:48,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:48,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:48,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:48,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:48,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:48,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:48,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:48,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:48,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:48,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:48,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:48,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:48,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:48,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:48,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:48,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:48,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:48,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:48,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:48,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:48,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:48,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:48,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:48,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:48,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:48,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:48,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:48,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:48,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:48,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:48,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:48,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:48,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:48,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:48,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:48,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:48,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:47:48,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:48,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:48,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:48,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:48,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:47:48,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:47:48,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:48,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:48,326 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:48,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:48,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:48,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:47:48,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:47:48,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:47:48,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:47:48,327 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:47:48,327 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:47:48,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:48,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:48,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:47:48,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:48,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:48,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:47:48,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:48,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:48,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:47:48,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:47:48,330 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:47:48,330 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:47:48,331 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:47:48,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:47:48,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:47:48,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:47:48,332 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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a57a912aff80ad559a0b614e92a359dd4b5edd9175df70bc4234fe728f540265 [2022-11-02 20:47:48,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:48,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:48,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:48,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:48,750 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:48,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c [2022-11-02 20:47:48,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/5ac9e9892/4bdc6e15a46e4f29aa982e6a60eb18ef/FLAG5cdc5a35c [2022-11-02 20:47:49,507 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:49,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c [2022-11-02 20:47:49,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/5ac9e9892/4bdc6e15a46e4f29aa982e6a60eb18ef/FLAG5cdc5a35c [2022-11-02 20:47:49,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/data/5ac9e9892/4bdc6e15a46e4f29aa982e6a60eb18ef [2022-11-02 20:47:49,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:49,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:49,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:49,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:49,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:49,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:49" (1/1) ... [2022-11-02 20:47:49,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61197152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:49, skipping insertion in model container [2022-11-02 20:47:49,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:49" (1/1) ... [2022-11-02 20:47:49,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:49,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:50,006 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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c[1107,1120] [2022-11-02 20:47:50,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:50,080 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:50,103 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_cca88fbd-fb41-4756-9db9-bfd7c9d15057/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal54.c[1107,1120] [2022-11-02 20:47:50,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:50,204 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50 WrapperNode [2022-11-02 20:47:50,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:50,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:50,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:50,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:50,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,280 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 234 [2022-11-02 20:47:50,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:50,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:50,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:50,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:50,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,328 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:50,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:50,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:50,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:50,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (1/1) ... [2022-11-02 20:47:50,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:50,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:50,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:50,552 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:50,554 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:50,990 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:50,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:51,006 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:47:51,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:51 BoogieIcfgContainer [2022-11-02 20:47:51,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:51,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:47:51,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:47:51,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:47:51,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:49" (1/3) ... [2022-11-02 20:47:51,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9371c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:51, skipping insertion in model container [2022-11-02 20:47:51,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:50" (2/3) ... [2022-11-02 20:47:51,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9371c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:51, skipping insertion in model container [2022-11-02 20:47:51,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:51" (3/3) ... [2022-11-02 20:47:51,020 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal54.c [2022-11-02 20:47:51,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:47:51,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:47:51,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:47:51,141 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;@6552540d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:47:51,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:47:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:51,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:51,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:51,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:47:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:51,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463748887] [2022-11-02 20:47:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:51,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:51,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:51,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:51,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:47:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:51,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:51,492 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 20:47:51,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:51,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:51,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463748887] [2022-11-02 20:47:51,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463748887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:51,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:51,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311582390] [2022-11-02 20:47:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:51,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:51,535 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:51,616 INFO L93 Difference]: Finished difference Result 137 states and 203 transitions. [2022-11-02 20:47:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:47:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:51,628 INFO L225 Difference]: With dead ends: 137 [2022-11-02 20:47:51,628 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 20:47:51,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 20:47:51,635 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 134 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:51,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 179 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 20:47:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 37. [2022-11-02 20:47:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-11-02 20:47:51,674 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 9 [2022-11-02 20:47:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:51,674 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-11-02 20:47:51,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-11-02 20:47:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:51,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:51,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:51,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:51,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:47:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:51,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694827568] [2022-11-02 20:47:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:51,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:51,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:51,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:47:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:52,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:52,040 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 20:47:52,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:52,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:52,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694827568] [2022-11-02 20:47:52,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694827568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:52,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:52,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210235764] [2022-11-02 20:47:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:52,045 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:52,111 INFO L93 Difference]: Finished difference Result 133 states and 187 transitions. [2022-11-02 20:47:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:47:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:47:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:52,121 INFO L225 Difference]: With dead ends: 133 [2022-11-02 20:47:52,123 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 20:47:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 20:47:52,125 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 128 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:52,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 20:47:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 39. [2022-11-02 20:47:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-02 20:47:52,139 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-11-02 20:47:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:52,141 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-02 20:47:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-02 20:47:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:52,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:52,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:52,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:52,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 20:47:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:52,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394388272] [2022-11-02 20:47:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:52,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:52,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:47:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:52,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:52,702 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 20:47:52,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:52,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:52,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394388272] [2022-11-02 20:47:52,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394388272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:52,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:52,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:47:52,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810812644] [2022-11-02 20:47:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:52,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:47:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:47:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:52,716 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:52,830 INFO L93 Difference]: Finished difference Result 73 states and 101 transitions. [2022-11-02 20:47:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:47:52,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:47:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:52,833 INFO L225 Difference]: With dead ends: 73 [2022-11-02 20:47:52,833 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:47:52,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:47:52,835 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 124 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:52,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 180 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:47:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 41. [2022-11-02 20:47:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-11-02 20:47:52,844 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 9 [2022-11-02 20:47:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:52,845 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-11-02 20:47:52,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:47:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-11-02 20:47:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:52,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:52,847 INFO L195 NwaCegarLoop]: trace histogram [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 20:47:52,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:53,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:53,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:53,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1250611463, now seen corresponding path program 1 times [2022-11-02 20:47:53,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:53,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892432618] [2022-11-02 20:47:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:53,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:53,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:53,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:53,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:47:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:47:53,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:53,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:53,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:53,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892432618] [2022-11-02 20:47:53,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892432618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:53,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:53,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:53,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603648004] [2022-11-02 20:47:53,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:53,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:53,346 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:53,399 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2022-11-02 20:47:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:53,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-11-02 20:47:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:53,401 INFO L225 Difference]: With dead ends: 81 [2022-11-02 20:47:53,411 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:47:53,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 20:47:53,413 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 79 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:53,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:47:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-11-02 20:47:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:47:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2022-11-02 20:47:53,420 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 40 [2022-11-02 20:47:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:53,420 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2022-11-02 20:47:53,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2022-11-02 20:47:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:53,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:53,422 INFO L195 NwaCegarLoop]: trace histogram [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 20:47:53,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:53,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:53,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1110062853, now seen corresponding path program 1 times [2022-11-02 20:47:53,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:53,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447018606] [2022-11-02 20:47:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:53,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:53,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:53,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:53,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:47:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:47:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:53,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:53,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:53,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447018606] [2022-11-02 20:47:53,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447018606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:53,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:53,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569258388] [2022-11-02 20:47:53,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:53,837 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:53,866 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2022-11-02 20:47:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-11-02 20:47:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:53,868 INFO L225 Difference]: With dead ends: 85 [2022-11-02 20:47:53,868 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 20:47:53,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 20:47:53,870 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 73 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:53,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 82 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 20:47:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2022-11-02 20:47:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-11-02 20:47:53,878 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 40 [2022-11-02 20:47:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:53,878 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-11-02 20:47:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-11-02 20:47:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:53,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:53,880 INFO L195 NwaCegarLoop]: trace histogram [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 20:47:53,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:54,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:54,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -687361027, now seen corresponding path program 1 times [2022-11-02 20:47:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:54,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799773607] [2022-11-02 20:47:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:54,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:54,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:47:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:47:54,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:54,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:54,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799773607] [2022-11-02 20:47:54,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799773607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:54,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:54,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:47:54,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989296708] [2022-11-02 20:47:54,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:47:54,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:47:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:54,388 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:54,483 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-11-02 20:47:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:47:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-11-02 20:47:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:54,488 INFO L225 Difference]: With dead ends: 120 [2022-11-02 20:47:54,488 INFO L226 Difference]: Without dead ends: 87 [2022-11-02 20:47:54,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 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 20:47:54,494 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 108 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:54,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 182 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-02 20:47:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2022-11-02 20:47:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 20:47:54,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2022-11-02 20:47:54,516 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 40 [2022-11-02 20:47:54,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:54,516 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2022-11-02 20:47:54,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:54,517 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-11-02 20:47:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:54,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:54,519 INFO L195 NwaCegarLoop]: trace histogram [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 20:47:54,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:54,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1001582715, now seen corresponding path program 1 times [2022-11-02 20:47:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486356171] [2022-11-02 20:47:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:54,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:54,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:47:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:47:54,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:54,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:54,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486356171] [2022-11-02 20:47:54,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486356171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:54,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:54,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116292522] [2022-11-02 20:47:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:54,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:54,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:54,921 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:54,946 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2022-11-02 20:47:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:54,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-11-02 20:47:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:54,948 INFO L225 Difference]: With dead ends: 95 [2022-11-02 20:47:54,948 INFO L226 Difference]: Without dead ends: 62 [2022-11-02 20:47:54,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 20:47:54,949 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 61 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:54,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 103 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-02 20:47:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-11-02 20:47:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 20:47:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-11-02 20:47:54,955 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 40 [2022-11-02 20:47:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:54,956 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-11-02 20:47:54,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 20:47:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-11-02 20:47:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:54,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:54,958 INFO L195 NwaCegarLoop]: trace histogram [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 20:47:54,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:55,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1702647293, now seen corresponding path program 1 times [2022-11-02 20:47:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:55,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174143685] [2022-11-02 20:47:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:55,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:55,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:55,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:47:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:55,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:47:55,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:55,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:55,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:55,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174143685] [2022-11-02 20:47:55,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174143685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:55,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:47:55,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:47:55,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235916808] [2022-11-02 20:47:55,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:55,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:47:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:47:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:47:55,604 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 20:47:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:56,016 INFO L93 Difference]: Finished difference Result 188 states and 247 transitions. [2022-11-02 20:47:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 40 [2022-11-02 20:47:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:56,017 INFO L225 Difference]: With dead ends: 188 [2022-11-02 20:47:56,017 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 20:47:56,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:47:56,018 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 438 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:56,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 366 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:47:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 20:47:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 68. [2022-11-02 20:47:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 67 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 20:47:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2022-11-02 20:47:56,026 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 40 [2022-11-02 20:47:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:56,027 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2022-11-02 20:47:56,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 20:47:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2022-11-02 20:47:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:56,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:56,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:56,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:56,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:56,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1759905595, now seen corresponding path program 1 times [2022-11-02 20:47:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:56,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183595060] [2022-11-02 20:47:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:56,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:56,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:56,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:56,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:47:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:56,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:47:56,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:56,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:56,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:47:56,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183595060] [2022-11-02 20:47:56,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183595060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:56,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:47:56,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:47:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055800023] [2022-11-02 20:47:56,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:56,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:47:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:47:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:47:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:47:56,653 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 20:47:57,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:57,061 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2022-11-02 20:47:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:57,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 40 [2022-11-02 20:47:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:57,063 INFO L225 Difference]: With dead ends: 203 [2022-11-02 20:47:57,063 INFO L226 Difference]: Without dead ends: 157 [2022-11-02 20:47:57,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:47:57,064 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 441 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:57,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 362 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:47:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-02 20:47:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 70. [2022-11-02 20:47:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.289855072463768) internal successors, (89), 69 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 20:47:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2022-11-02 20:47:57,071 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 40 [2022-11-02 20:47:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:57,071 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2022-11-02 20:47:57,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 20:47:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2022-11-02 20:47:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:47:57,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:57,072 INFO L195 NwaCegarLoop]: trace histogram [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 20:47:57,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:47:57,273 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:57,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1759965177, now seen corresponding path program 1 times [2022-11-02 20:47:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:47:57,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603441510] [2022-11-02 20:47:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:57,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:47:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:47:57,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:47:57,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:47:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:57,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:47:57,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:47:58,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:48:02,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603441510] [2022-11-02 20:48:02,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603441510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:02,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:02,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:48:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304985707] [2022-11-02 20:48:02,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:02,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:48:02,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:02,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:48:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:48:02,284 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 20:48:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:03,613 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2022-11-02 20:48:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:48:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 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 40 [2022-11-02 20:48:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:03,616 INFO L225 Difference]: With dead ends: 126 [2022-11-02 20:48:03,616 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 20:48:03,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:48:03,617 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 200 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:03,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 265 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-11-02 20:48:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 20:48:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2022-11-02 20:48:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 20:48:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-11-02 20:48:03,633 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 40 [2022-11-02 20:48:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:03,633 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-11-02 20:48:03,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 20:48:03,634 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-11-02 20:48:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:03,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:03,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:03,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:03,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:03,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1845699059, now seen corresponding path program 1 times [2022-11-02 20:48:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:03,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382500340] [2022-11-02 20:48:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:03,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:03,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:48:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:04,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:48:04,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:04,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:04,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:04,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382500340] [2022-11-02 20:48:04,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382500340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:04,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:04,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:48:04,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681718228] [2022-11-02 20:48:04,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:04,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:48:04,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:04,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:48:04,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:04,326 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:48:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:04,489 INFO L93 Difference]: Finished difference Result 174 states and 221 transitions. [2022-11-02 20:48:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:04,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:04,490 INFO L225 Difference]: With dead ends: 174 [2022-11-02 20:48:04,490 INFO L226 Difference]: Without dead ends: 122 [2022-11-02 20:48:04,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:48:04,491 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 260 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:04,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 256 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:48:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-02 20:48:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2022-11-02 20:48:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 20:48:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2022-11-02 20:48:04,496 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 71 [2022-11-02 20:48:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:04,497 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2022-11-02 20:48:04,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:48:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2022-11-02 20:48:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:04,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:04,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:04,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:04,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:04,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 40260725, now seen corresponding path program 1 times [2022-11-02 20:48:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:04,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773352914] [2022-11-02 20:48:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:04,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:04,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:04,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:04,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:48:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:04,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:48:04,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:05,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:05,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:05,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773352914] [2022-11-02 20:48:05,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773352914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:05,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:05,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:48:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689257792] [2022-11-02 20:48:05,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:48:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:48:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:05,316 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:48:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:05,523 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2022-11-02 20:48:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:05,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:05,524 INFO L225 Difference]: With dead ends: 183 [2022-11-02 20:48:05,524 INFO L226 Difference]: Without dead ends: 131 [2022-11-02 20:48:05,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:48:05,525 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 150 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:05,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 277 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:48:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-02 20:48:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 84. [2022-11-02 20:48:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 83 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 20:48:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-11-02 20:48:05,533 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 71 [2022-11-02 20:48:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:05,533 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-11-02 20:48:05,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:48:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-11-02 20:48:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:05,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:05,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:05,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:05,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:05,752 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:05,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 720319095, now seen corresponding path program 1 times [2022-11-02 20:48:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:05,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733532285] [2022-11-02 20:48:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:05,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:05,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:05,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:05,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:48:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:05,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-02 20:48:05,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:48:07,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:48:23,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:23,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733532285] [2022-11-02 20:48:23,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733532285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:23,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:23,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 20:48:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585054616] [2022-11-02 20:48:23,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:48:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:48:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2302, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:48:23,582 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 20:48:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:47,289 INFO L93 Difference]: Finished difference Result 730 states and 890 transitions. [2022-11-02 20:48:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-02 20:48:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:47,292 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:48:47,293 INFO L226 Difference]: Without dead ends: 728 [2022-11-02 20:48:47,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 92 SyntacticMatches, 42 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12504 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=5885, Invalid=29647, Unknown=0, NotChecked=0, Total=35532 [2022-11-02 20:48:47,305 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1202 mSDsluCounter, 3983 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 4435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2679 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:47,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 4104 Invalid, 4435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1598 Invalid, 0 Unknown, 2679 Unchecked, 1.8s Time] [2022-11-02 20:48:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-02 20:48:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 109. [2022-11-02 20:48:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 108 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 20:48:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions. [2022-11-02 20:48:47,339 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 71 [2022-11-02 20:48:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:47,340 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 137 transitions. [2022-11-02 20:48:47,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 20:48:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions. [2022-11-02 20:48:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:47,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:47,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:47,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:47,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:47,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash 720378677, now seen corresponding path program 1 times [2022-11-02 20:48:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:47,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929392685] [2022-11-02 20:48:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:47,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:47,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:47,557 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:47,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:48:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:47,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:48:47,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:48:47,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:48:48,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:48,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929392685] [2022-11-02 20:48:48,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929392685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:48,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:48,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:48:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234715025] [2022-11-02 20:48:48,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:48,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:48,185 INFO L87 Difference]: Start difference. First operand 109 states and 137 transitions. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:48:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:48,632 INFO L93 Difference]: Finished difference Result 255 states and 320 transitions. [2022-11-02 20:48:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:48:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:48,634 INFO L225 Difference]: With dead ends: 255 [2022-11-02 20:48:48,634 INFO L226 Difference]: Without dead ends: 178 [2022-11-02 20:48:48,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:48:48,635 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 315 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:48,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 675 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:48:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-02 20:48:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 107. [2022-11-02 20:48:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 106 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 20:48:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2022-11-02 20:48:48,649 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 71 [2022-11-02 20:48:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:48,649 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2022-11-02 20:48:48,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:48:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2022-11-02 20:48:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:48,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:48,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:48,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:48,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:48,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash 777577397, now seen corresponding path program 1 times [2022-11-02 20:48:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:48,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585062902] [2022-11-02 20:48:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:48,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:48,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:48,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:48,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:48:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:49,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:48:49,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:48:49,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:48:49,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:49,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585062902] [2022-11-02 20:48:49,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585062902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:49,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:49,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:48:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239241206] [2022-11-02 20:48:49,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:49,512 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:48:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:49,936 INFO L93 Difference]: Finished difference Result 244 states and 301 transitions. [2022-11-02 20:48:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:48:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:49,937 INFO L225 Difference]: With dead ends: 244 [2022-11-02 20:48:49,938 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 20:48:49,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:48:49,939 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 408 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:49,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 631 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:48:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 20:48:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 107. [2022-11-02 20:48:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 20:48:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2022-11-02 20:48:49,949 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 71 [2022-11-02 20:48:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:49,949 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2022-11-02 20:48:49,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:48:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2022-11-02 20:48:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:49,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:49,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:49,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:50,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:50,154 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:50,155 INFO L85 PathProgramCache]: Analyzing trace with hash 133513081, now seen corresponding path program 1 times [2022-11-02 20:48:50,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:50,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318307611] [2022-11-02 20:48:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:50,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:50,157 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:50,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:48:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:50,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:48:50,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:48:50,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:48:50,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:50,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318307611] [2022-11-02 20:48:50,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318307611] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:50,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:48:50,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:48:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675687661] [2022-11-02 20:48:50,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:50,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:50,493 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 20:48:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:50,549 INFO L93 Difference]: Finished difference Result 321 states and 390 transitions. [2022-11-02 20:48:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:50,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:50,551 INFO L225 Difference]: With dead ends: 321 [2022-11-02 20:48:50,551 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 20:48:50,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 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 20:48:50,552 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 134 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:50,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 175 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:48:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 20:48:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 141. [2022-11-02 20:48:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 140 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 20:48:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2022-11-02 20:48:50,563 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 71 [2022-11-02 20:48:50,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:50,563 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2022-11-02 20:48:50,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 20:48:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2022-11-02 20:48:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:50,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:50,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:50,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:50,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:50,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash -559544583, now seen corresponding path program 1 times [2022-11-02 20:48:50,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:50,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286774315] [2022-11-02 20:48:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:50,773 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:50,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:48:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:50,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:48:50,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:48:51,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:48:51,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:51,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286774315] [2022-11-02 20:48:51,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286774315] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:51,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:48:51,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:48:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034788709] [2022-11-02 20:48:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:51,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:48:51,106 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:51,171 INFO L93 Difference]: Finished difference Result 420 states and 509 transitions. [2022-11-02 20:48:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:51,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-02 20:48:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:51,173 INFO L225 Difference]: With dead ends: 420 [2022-11-02 20:48:51,173 INFO L226 Difference]: Without dead ends: 317 [2022-11-02 20:48:51,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 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 20:48:51,174 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 149 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:51,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 169 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:48:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-02 20:48:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 187. [2022-11-02 20:48:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.2096774193548387) internal successors, (225), 186 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2022-11-02 20:48:51,186 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 71 [2022-11-02 20:48:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:51,186 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2022-11-02 20:48:51,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2022-11-02 20:48:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:51,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:51,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:51,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:51,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:51,399 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1651420167, now seen corresponding path program 1 times [2022-11-02 20:48:51,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:51,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536274938] [2022-11-02 20:48:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:51,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:51,401 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:51,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:48:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:51,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:48:51,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:48:51,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:48:51,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:48:51,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536274938] [2022-11-02 20:48:51,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536274938] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:51,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:48:51,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:48:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179048326] [2022-11-02 20:48:51,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:48:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:48:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:48:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:51,689 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 20:48:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:51,747 INFO L93 Difference]: Finished difference Result 411 states and 493 transitions. [2022-11-02 20:48:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 71 [2022-11-02 20:48:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:51,749 INFO L225 Difference]: With dead ends: 411 [2022-11-02 20:48:51,749 INFO L226 Difference]: Without dead ends: 292 [2022-11-02 20:48:51,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 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 20:48:51,750 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 80 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:51,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 234 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:48:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-02 20:48:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 187. [2022-11-02 20:48:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.1935483870967742) internal successors, (222), 186 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 20:48:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2022-11-02 20:48:51,762 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 71 [2022-11-02 20:48:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:51,762 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2022-11-02 20:48:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 20:48:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2022-11-02 20:48:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:48:51,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:51,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:51,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-02 20:48:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:48:51,976 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2056741115, now seen corresponding path program 1 times [2022-11-02 20:48:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:48:51,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634230713] [2022-11-02 20:48:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:51,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:48:51,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:48:51,979 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:48:52,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:48:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:52,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-02 20:48:52,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:48:54,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:49:05,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:05,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634230713] [2022-11-02 20:49:05,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634230713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:05,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:05,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-02 20:49:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314441114] [2022-11-02 20:49:05,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:05,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:49:05,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:49:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2459, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:49:05,547 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 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 20:49:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:09,665 INFO L93 Difference]: Finished difference Result 538 states and 631 transitions. [2022-11-02 20:49:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-02 20:49:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 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) Word has length 71 [2022-11-02 20:49:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:09,667 INFO L225 Difference]: With dead ends: 538 [2022-11-02 20:49:09,667 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:49:09,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=543, Invalid=6767, Unknown=0, NotChecked=0, Total=7310 [2022-11-02 20:49:09,668 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 191 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 932 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:09,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 5117 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 932 Unchecked, 0.1s Time] [2022-11-02 20:49:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:49:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 223. [2022-11-02 20:49:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.2027027027027026) internal successors, (267), 222 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 267 transitions. [2022-11-02 20:49:09,682 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 267 transitions. Word has length 71 [2022-11-02 20:49:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:09,683 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 267 transitions. [2022-11-02 20:49:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 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 20:49:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 267 transitions. [2022-11-02 20:49:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:49:09,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:09,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:09,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 20:49:09,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:09,897 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2106522489, now seen corresponding path program 1 times [2022-11-02 20:49:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:09,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205605335] [2022-11-02 20:49:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:09,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:09,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:09,899 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:09,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:49:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:49:10,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:49:10,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:49:10,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:10,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205605335] [2022-11-02 20:49:10,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205605335] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:10,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:10,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:49:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653482428] [2022-11-02 20:49:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:49:10,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:49:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:49:10,181 INFO L87 Difference]: Start difference. First operand 223 states and 267 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:10,234 INFO L93 Difference]: Finished difference Result 527 states and 626 transitions. [2022-11-02 20:49:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:49:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-02 20:49:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:10,244 INFO L225 Difference]: With dead ends: 527 [2022-11-02 20:49:10,244 INFO L226 Difference]: Without dead ends: 368 [2022-11-02 20:49:10,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 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 20:49:10,244 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 86 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:10,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 231 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:49:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-02 20:49:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 223. [2022-11-02 20:49:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.1711711711711712) internal successors, (260), 222 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 20:49:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 260 transitions. [2022-11-02 20:49:10,262 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 260 transitions. Word has length 71 [2022-11-02 20:49:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:10,262 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 260 transitions. [2022-11-02 20:49:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 260 transitions. [2022-11-02 20:49:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:49:10,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:10,264 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:10,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:10,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:10,476 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash 826658811, now seen corresponding path program 1 times [2022-11-02 20:49:10,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:10,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080485414] [2022-11-02 20:49:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:10,478 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:10,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:49:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:10,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-02 20:49:10,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:49:13,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:49:24,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:24,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080485414] [2022-11-02 20:49:24,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080485414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:24,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:24,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2022-11-02 20:49:24,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943366285] [2022-11-02 20:49:24,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:24,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-02 20:49:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-02 20:49:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3089, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:49:24,483 INFO L87 Difference]: Start difference. First operand 223 states and 260 transitions. Second operand has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:49:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:31,849 INFO L93 Difference]: Finished difference Result 777 states and 883 transitions. [2022-11-02 20:49:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 20:49:31,850 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 0 states have call successors, (0), 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 71 [2022-11-02 20:49:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:31,853 INFO L225 Difference]: With dead ends: 777 [2022-11-02 20:49:31,853 INFO L226 Difference]: Without dead ends: 775 [2022-11-02 20:49:31,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2170 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1367, Invalid=11065, Unknown=0, NotChecked=0, Total=12432 [2022-11-02 20:49:31,857 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 368 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1932 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:31,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 3922 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 319 Invalid, 0 Unknown, 1932 Unchecked, 0.4s Time] [2022-11-02 20:49:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-02 20:49:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 243. [2022-11-02 20:49:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1818181818181819) internal successors, (286), 242 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 20:49:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2022-11-02 20:49:31,874 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 71 [2022-11-02 20:49:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:31,875 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2022-11-02 20:49:31,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:49:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2022-11-02 20:49:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:49:31,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:31,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:31,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:32,082 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -761689091, now seen corresponding path program 1 times [2022-11-02 20:49:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631994361] [2022-11-02 20:49:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:32,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:32,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:32,084 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:32,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:49:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:32,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:49:32,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:49:32,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:49:32,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631994361] [2022-11-02 20:49:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631994361] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:32,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:32,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:49:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363124060] [2022-11-02 20:49:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:32,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:49:32,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:49:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:49:32,416 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 20:49:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:32,477 INFO L93 Difference]: Finished difference Result 846 states and 975 transitions. [2022-11-02 20:49:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:49:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 71 [2022-11-02 20:49:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:32,481 INFO L225 Difference]: With dead ends: 846 [2022-11-02 20:49:32,481 INFO L226 Difference]: Without dead ends: 659 [2022-11-02 20:49:32,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:49:32,482 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 210 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:32,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 173 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:49:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-02 20:49:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 351. [2022-11-02 20:49:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.1628571428571428) internal successors, (407), 350 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 20:49:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 407 transitions. [2022-11-02 20:49:32,501 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 407 transitions. Word has length 71 [2022-11-02 20:49:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:32,501 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 407 transitions. [2022-11-02 20:49:32,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 20:49:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 407 transitions. [2022-11-02 20:49:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:49:32,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:32,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:32,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:32,715 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:32,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1528258685, now seen corresponding path program 1 times [2022-11-02 20:49:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:32,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841626417] [2022-11-02 20:49:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:32,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:32,717 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:32,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:49:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:32,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:49:32,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:49:32,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:49:32,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:32,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841626417] [2022-11-02 20:49:32,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841626417] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:49:32,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:49:32,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 20:49:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887628187] [2022-11-02 20:49:32,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:49:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:49:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:49:32,980 INFO L87 Difference]: Start difference. First operand 351 states and 407 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 20:49:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:33,033 INFO L93 Difference]: Finished difference Result 823 states and 943 transitions. [2022-11-02 20:49:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:49:33,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 71 [2022-11-02 20:49:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:33,035 INFO L225 Difference]: With dead ends: 823 [2022-11-02 20:49:33,035 INFO L226 Difference]: Without dead ends: 574 [2022-11-02 20:49:33,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:49:33,036 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 114 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:33,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 240 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:49:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-02 20:49:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 351. [2022-11-02 20:49:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.1228571428571428) internal successors, (393), 350 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 20:49:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 393 transitions. [2022-11-02 20:49:33,054 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 393 transitions. Word has length 71 [2022-11-02 20:49:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:33,055 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 393 transitions. [2022-11-02 20:49:33,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 20:49:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 393 transitions. [2022-11-02 20:49:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:49:33,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:33,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 20:49:33,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:33,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:33,266 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash -60089217, now seen corresponding path program 1 times [2022-11-02 20:49:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:33,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122662176] [2022-11-02 20:49:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:33,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:33,269 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:33,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:49:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-02 20:49:33,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:49:36,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:49:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:49:51,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:51,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122662176] [2022-11-02 20:49:51,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122662176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:49:51,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:49:51,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2022-11-02 20:49:51,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419707931] [2022-11-02 20:49:51,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:49:51,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-02 20:49:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:51,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-02 20:49:51,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=4299, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 20:49:51,007 INFO L87 Difference]: Start difference. First operand 351 states and 393 transitions. Second operand has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 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 20:49:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:58,547 INFO L93 Difference]: Finished difference Result 798 states and 879 transitions. [2022-11-02 20:49:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-02 20:49:58,547 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 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) Word has length 71 [2022-11-02 20:49:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:58,550 INFO L225 Difference]: With dead ends: 798 [2022-11-02 20:49:58,551 INFO L226 Difference]: Without dead ends: 796 [2022-11-02 20:49:58,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=419, Invalid=7413, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:49:58,552 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 139 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2014 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:58,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 3832 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 2014 Unchecked, 0.0s Time] [2022-11-02 20:49:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-02 20:49:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 694. [2022-11-02 20:49:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.113997113997114) internal successors, (772), 693 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 20:49:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 772 transitions. [2022-11-02 20:49:58,592 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 772 transitions. Word has length 71 [2022-11-02 20:49:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:58,593 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 772 transitions. [2022-11-02 20:49:58,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 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 20:49:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 772 transitions. [2022-11-02 20:49:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 20:49:58,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:58,595 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:58,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:58,808 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:49:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash -272216387, now seen corresponding path program 2 times [2022-11-02 20:49:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:58,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194002182] [2022-11-02 20:49:58,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:49:58,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:58,810 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:58,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:49:58,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:49:58,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:49:58,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 20:49:58,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:50:00,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 88 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:50:29,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:29,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194002182] [2022-11-02 20:50:29,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194002182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:29,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:50:29,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 45] total 80 [2022-11-02 20:50:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804828897] [2022-11-02 20:50:29,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:29,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-02 20:50:29,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-02 20:50:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=6085, Unknown=0, NotChecked=0, Total=6320 [2022-11-02 20:50:29,918 INFO L87 Difference]: Start difference. First operand 694 states and 772 transitions. Second operand has 80 states, 80 states have (on average 2.2375) internal successors, (179), 80 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 20:51:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:32,169 INFO L93 Difference]: Finished difference Result 2714 states and 2971 transitions. [2022-11-02 20:51:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-11-02 20:51:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.2375) internal successors, (179), 80 states have internal predecessors, (179), 0 states have call successors, (0), 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 102 [2022-11-02 20:51:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:32,175 INFO L225 Difference]: With dead ends: 2714 [2022-11-02 20:51:32,175 INFO L226 Difference]: Without dead ends: 2712 [2022-11-02 20:51:32,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16573 ImplicationChecksByTransitivity, 85.6s TimeCoverageRelationStatistics Valid=6192, Invalid=53100, Unknown=0, NotChecked=0, Total=59292 [2022-11-02 20:51:32,183 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1132 mSDsluCounter, 6480 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 6604 SdHoareTripleChecker+Invalid, 7916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5896 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:32,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 6604 Invalid, 7916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1892 Invalid, 0 Unknown, 5896 Unchecked, 1.7s Time] [2022-11-02 20:51:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2022-11-02 20:51:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1504. [2022-11-02 20:51:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 1.1217564870259482) internal successors, (1686), 1503 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 20:51:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1686 transitions. [2022-11-02 20:51:32,319 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1686 transitions. Word has length 102 [2022-11-02 20:51:32,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:32,319 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1686 transitions. [2022-11-02 20:51:32,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.2375) internal successors, (179), 80 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 20:51:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1686 transitions. [2022-11-02 20:51:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 20:51:32,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:32,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:32,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:32,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:32,536 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1905920577, now seen corresponding path program 2 times [2022-11-02 20:51:32,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:32,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959760389] [2022-11-02 20:51:32,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:51:32,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:32,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:32,538 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:32,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca88fbd-fb41-4756-9db9-bfd7c9d15057/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:51:32,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:51:32,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:32,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-02 20:51:32,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 78 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:51:35,033 INFO L328 TraceCheckSpWp]: Computing backward predicates...