./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/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_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/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 32bit --witnessprinter.graph.data.programhash bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 --- 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 19:58:31,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:58:31,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:58:31,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:58:31,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:58:31,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:58:31,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:58:31,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:58:31,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:58:31,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:58:31,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:58:31,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:58:31,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:58:31,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:58:31,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:58:31,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:58:31,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:58:31,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:58:31,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:58:31,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:58:31,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:58:31,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:58:31,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:58:31,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:58:31,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:58:31,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:58:31,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:58:31,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:58:31,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:58:31,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:58:31,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:58:31,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:58:31,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:58:31,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:58:31,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:58:31,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:58:31,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:58:31,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:58:31,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:58:31,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:58:31,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:58:31,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:58:31,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:58:31,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:58:31,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:58:31,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:58:31,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:58:31,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:58:31,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:58:31,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:58:31,498 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:58:31,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:58:31,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:58:31,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:58:31,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:58:31,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:58:31,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:58:31,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:58:31,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:58:31,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:58:31,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:58:31,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:58:31,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:58:31,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:58:31,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:58:31,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:58:31,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:58:31,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:58:31,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:58:31,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:58:31,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:58:31,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:58:31,507 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:58:31,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:58:31,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:58:31,508 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_129ffe7d-6fde-439d-ac55-d57ab95c8290/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 [2022-11-02 19:58:31,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:58:31,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:58:31,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:58:31,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:58:31,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:58:31,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-11-02 19:58:31,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/data/cd2050839/e5544d746713456582d0d01faf9ae019/FLAGe1f752dd6 [2022-11-02 19:58:32,427 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:58:32,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-11-02 19:58:32,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/data/cd2050839/e5544d746713456582d0d01faf9ae019/FLAGe1f752dd6 [2022-11-02 19:58:32,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/data/cd2050839/e5544d746713456582d0d01faf9ae019 [2022-11-02 19:58:32,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:58:32,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:58:32,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:58:32,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:58:32,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:58:32,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:58:32" (1/1) ... [2022-11-02 19:58:32,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4626bfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:32, skipping insertion in model container [2022-11-02 19:58:32,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:58:32" (1/1) ... [2022-11-02 19:58:32,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:58:32,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:58:33,000 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_129ffe7d-6fde-439d-ac55-d57ab95c8290/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-11-02 19:58:33,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:58:33,024 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:58:33,035 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_129ffe7d-6fde-439d-ac55-d57ab95c8290/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-11-02 19:58:33,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:58:33,057 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:58:33,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33 WrapperNode [2022-11-02 19:58:33,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:58:33,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:58:33,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:58:33,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:58:33,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,096 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-02 19:58:33,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:58:33,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:58:33,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:58:33,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:58:33,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:58:33,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:58:33,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:58:33,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:58:33,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (1/1) ... [2022-11-02 19:58:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:58:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:33,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:58:33,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:58:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:58:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:58:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:58:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:58:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:58:33,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:58:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:58:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:58:33,283 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:58:33,286 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:58:33,535 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:58:33,541 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:58:33,541 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 19:58:33,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:58:33 BoogieIcfgContainer [2022-11-02 19:58:33,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:58:33,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:58:33,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:58:33,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:58:33,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:58:32" (1/3) ... [2022-11-02 19:58:33,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef40f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:58:33, skipping insertion in model container [2022-11-02 19:58:33,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:58:33" (2/3) ... [2022-11-02 19:58:33,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef40f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:58:33, skipping insertion in model container [2022-11-02 19:58:33,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:58:33" (3/3) ... [2022-11-02 19:58:33,553 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-2-n-u.c [2022-11-02 19:58:33,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:58:33,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:58:33,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:58:33,631 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;@41e31592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:58:33,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:58:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:58:33,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:33,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:33,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1817636276, now seen corresponding path program 1 times [2022-11-02 19:58:33,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:33,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506139962] [2022-11-02 19:58:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:33,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:33,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231207704] [2022-11-02 19:58:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:33,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:33,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:33,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:33,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:58:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:33,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:58:33,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:33,943 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 19:58:33,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:33,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:33,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506139962] [2022-11-02 19:58:33,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:33,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231207704] [2022-11-02 19:58:33,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231207704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:33,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:33,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:58:33,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450756598] [2022-11-02 19:58:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:58:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:58:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:58:33,996 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:34,081 INFO L93 Difference]: Finished difference Result 43 states and 71 transitions. [2022-11-02 19:58:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:58:34,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-02 19:58:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:34,091 INFO L225 Difference]: With dead ends: 43 [2022-11-02 19:58:34,091 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 19:58:34,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:58:34,097 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:34,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:58:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 19:58:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-02 19:58:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-02 19:58:34,148 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2022-11-02 19:58:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:34,148 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-02 19:58:34,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-02 19:58:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 19:58:34,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:34,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:34,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 19:58:34,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 19:58:34,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash 429030367, now seen corresponding path program 1 times [2022-11-02 19:58:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:34,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822658105] [2022-11-02 19:58:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:34,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:34,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399682462] [2022-11-02 19:58:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:34,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:34,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:58:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:34,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:58:34,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:34,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:34,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822658105] [2022-11-02 19:58:34,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:34,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399682462] [2022-11-02 19:58:34,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399682462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:34,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:34,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660599491] [2022-11-02 19:58:34,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:34,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:34,494 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:34,537 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2022-11-02 19:58:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:58:34,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 19:58:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:34,539 INFO L225 Difference]: With dead ends: 43 [2022-11-02 19:58:34,539 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 19:58:34,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:34,541 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 34 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:34,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 24 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 19:58:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-11-02 19:58:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-02 19:58:34,548 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-02 19:58:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:34,548 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-02 19:58:34,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-02 19:58:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 19:58:34,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:34,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:34,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:34,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:34,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -270581085, now seen corresponding path program 1 times [2022-11-02 19:58:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:34,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969068097] [2022-11-02 19:58:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:34,796 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:34,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748488142] [2022-11-02 19:58:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:34,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:34,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:58:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:34,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:34,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:34,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:58:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:34,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:34,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969068097] [2022-11-02 19:58:34,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:34,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748488142] [2022-11-02 19:58:34,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748488142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:58:34,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:58:34,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 19:58:34,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034101048] [2022-11-02 19:58:34,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:58:34,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:34,986 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:35,125 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-11-02 19:58:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 14 [2022-11-02 19:58:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:35,127 INFO L225 Difference]: With dead ends: 63 [2022-11-02 19:58:35,127 INFO L226 Difference]: Without dead ends: 45 [2022-11-02 19:58:35,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:58:35,128 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:35,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 37 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:58:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-02 19:58:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2022-11-02 19:58:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-11-02 19:58:35,137 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2022-11-02 19:58:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:35,137 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-11-02 19:58:35,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-11-02 19:58:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 19:58:35,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:35,138 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:35,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:35,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:35,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1443885857, now seen corresponding path program 2 times [2022-11-02 19:58:35,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:35,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447622901] [2022-11-02 19:58:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:35,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:35,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:35,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548933125] [2022-11-02 19:58:35,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:58:35,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:35,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:35,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:58:35,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:58:35,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:58:35,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:58:35,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 19:58:35,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447622901] [2022-11-02 19:58:35,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548933125] [2022-11-02 19:58:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548933125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:35,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:35,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876804100] [2022-11-02 19:58:35,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:35,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:35,489 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:35,550 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2022-11-02 19:58:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:58:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 17 [2022-11-02 19:58:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:35,559 INFO L225 Difference]: With dead ends: 84 [2022-11-02 19:58:35,559 INFO L226 Difference]: Without dead ends: 66 [2022-11-02 19:58:35,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:35,561 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:35,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-02 19:58:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2022-11-02 19:58:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-02 19:58:35,588 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 17 [2022-11-02 19:58:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-02 19:58:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-02 19:58:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 19:58:35,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:35,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:35,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:35,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1541106392, now seen corresponding path program 1 times [2022-11-02 19:58:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:35,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777288445] [2022-11-02 19:58:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:35,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647855912] [2022-11-02 19:58:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:35,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:35,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:58:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:35,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:58:35,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 19:58:35,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:58:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 19:58:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777288445] [2022-11-02 19:58:36,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:36,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647855912] [2022-11-02 19:58:36,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647855912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:58:36,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:58:36,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 19:58:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709077489] [2022-11-02 19:58:36,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:58:36,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:58:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:58:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:58:36,074 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:36,322 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2022-11-02 19:58:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:36,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 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 24 [2022-11-02 19:58:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:36,324 INFO L225 Difference]: With dead ends: 120 [2022-11-02 19:58:36,324 INFO L226 Difference]: Without dead ends: 86 [2022-11-02 19:58:36,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:58:36,326 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 178 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:36,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 60 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:58:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-02 19:58:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2022-11-02 19:58:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-11-02 19:58:36,343 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 24 [2022-11-02 19:58:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:36,343 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-11-02 19:58:36,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,343 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-11-02 19:58:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 19:58:36,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:36,344 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:36,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:36,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1220021784, now seen corresponding path program 2 times [2022-11-02 19:58:36,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:36,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993454499] [2022-11-02 19:58:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:36,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:36,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42011840] [2022-11-02 19:58:36,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:58:36,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:36,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:36,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:36,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:58:36,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:58:36,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:58:36,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 19:58:36,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-02 19:58:36,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:58:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-02 19:58:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993454499] [2022-11-02 19:58:37,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42011840] [2022-11-02 19:58:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42011840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:58:37,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:58:37,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 19:58:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196547803] [2022-11-02 19:58:37,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:58:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:58:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:58:37,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:58:37,236 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 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 19:58:37,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:37,928 INFO L93 Difference]: Finished difference Result 234 states and 289 transitions. [2022-11-02 19:58:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 19:58:37,930 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 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 36 [2022-11-02 19:58:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:37,931 INFO L225 Difference]: With dead ends: 234 [2022-11-02 19:58:37,931 INFO L226 Difference]: Without dead ends: 170 [2022-11-02 19:58:37,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 19:58:37,933 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 370 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:37,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 109 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-02 19:58:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 127. [2022-11-02 19:58:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 126 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2022-11-02 19:58:37,960 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 36 [2022-11-02 19:58:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:37,960 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2022-11-02 19:58:37,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 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 19:58:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2022-11-02 19:58:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 19:58:37,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:37,962 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:37,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:38,182 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash -783303832, now seen corresponding path program 3 times [2022-11-02 19:58:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:38,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105055207] [2022-11-02 19:58:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:38,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:38,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245447539] [2022-11-02 19:58:38,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:58:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:38,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:38,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:38,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 19:58:38,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 19:58:38,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:58:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:38,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-02 19:58:38,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:58:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-02 19:58:38,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105055207] [2022-11-02 19:58:38,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:58:38,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245447539] [2022-11-02 19:58:38,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245447539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:58:38,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:58:38,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 19:58:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813033173] [2022-11-02 19:58:38,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:58:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:38,645 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:38,825 INFO L93 Difference]: Finished difference Result 590 states and 718 transitions. [2022-11-02 19:58:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:38,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-02 19:58:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:38,830 INFO L225 Difference]: With dead ends: 590 [2022-11-02 19:58:38,830 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 19:58:38,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:58:38,836 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 144 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:38,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 34 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:58:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 19:58:38,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 277. [2022-11-02 19:58:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.1195652173913044) internal successors, (309), 276 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 309 transitions. [2022-11-02 19:58:38,901 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 309 transitions. Word has length 60 [2022-11-02 19:58:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:38,901 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 309 transitions. [2022-11-02 19:58:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 309 transitions. [2022-11-02 19:58:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 19:58:38,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:38,906 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:38,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:39,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 19:58:39,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2132288564, now seen corresponding path program 4 times [2022-11-02 19:58:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:39,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256129558] [2022-11-02 19:58:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:39,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:39,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:58:39,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356386933] [2022-11-02 19:58:39,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 19:58:39,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:58:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:58:39,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:58:39,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_129ffe7d-6fde-439d-ac55-d57ab95c8290/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:00:54,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:00:54,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:54,546 WARN L261 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 527 conjunts are in the unsatisfiable core [2022-11-02 20:00:54,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:54,725 INFO L356 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2022-11-02 20:00:54,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-11-02 20:00:54,812 INFO L356 Elim1Store]: treesize reduction 180, result has 20.0 percent of original size [2022-11-02 20:00:54,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 75 [2022-11-02 20:00:54,987 INFO L356 Elim1Store]: treesize reduction 441, result has 17.9 percent of original size [2022-11-02 20:00:54,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 119 [2022-11-02 20:00:55,206 INFO L356 Elim1Store]: treesize reduction 560, result has 13.7 percent of original size [2022-11-02 20:00:55,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 136 treesize of output 153 [2022-11-02 20:00:55,534 INFO L356 Elim1Store]: treesize reduction 825, result has 11.9 percent of original size [2022-11-02 20:00:55,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 41 case distinctions, treesize of input 169 treesize of output 192 [2022-11-02 20:00:55,939 INFO L356 Elim1Store]: treesize reduction 1140, result has 10.4 percent of original size [2022-11-02 20:00:55,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 61 case distinctions, treesize of input 202 treesize of output 231 [2022-11-02 20:00:56,475 INFO L356 Elim1Store]: treesize reduction 1505, result has 9.3 percent of original size [2022-11-02 20:00:56,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 85 case distinctions, treesize of input 235 treesize of output 270 [2022-11-02 20:00:57,507 INFO L356 Elim1Store]: treesize reduction 2246, result has 10.9 percent of original size [2022-11-02 20:00:57,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 314 [2022-11-02 20:00:58,477 INFO L356 Elim1Store]: treesize reduction 2385, result has 7.7 percent of original size [2022-11-02 20:00:58,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 145 case distinctions, treesize of input 301 treesize of output 348 [2022-11-02 20:01:00,199 INFO L356 Elim1Store]: treesize reduction 3318, result has 9.5 percent of original size [2022-11-02 20:01:00,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 339 treesize of output 392 [2022-11-02 20:01:01,700 INFO L356 Elim1Store]: treesize reduction 3465, result has 6.6 percent of original size [2022-11-02 20:01:01,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 221 case distinctions, treesize of input 367 treesize of output 426 [2022-11-02 20:01:03,484 INFO L356 Elim1Store]: treesize reduction 4080, result has 6.1 percent of original size [2022-11-02 20:01:03,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 265 case distinctions, treesize of input 400 treesize of output 465 [2022-11-02 20:01:05,574 INFO L356 Elim1Store]: treesize reduction 4745, result has 5.7 percent of original size [2022-11-02 20:01:05,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 313 case distinctions, treesize of input 433 treesize of output 504 [2022-11-02 20:01:08,356 INFO L356 Elim1Store]: treesize reduction 5460, result has 5.4 percent of original size [2022-11-02 20:01:08,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 365 case distinctions, treesize of input 466 treesize of output 543 [2022-11-02 20:01:13,290 INFO L356 Elim1Store]: treesize reduction 6873, result has 7.1 percent of original size [2022-11-02 20:01:13,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 435 case distinctions, treesize of input 504 treesize of output 587 [2022-11-02 20:01:17,676 INFO L356 Elim1Store]: treesize reduction 7040, result has 4.8 percent of original size [2022-11-02 20:01:17,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 31 select indices, 31 select index equivalence classes, 0 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 481 case distinctions, treesize of input 532 treesize of output 621 [2022-11-02 20:01:22,613 INFO L356 Elim1Store]: treesize reduction 7905, result has 4.5 percent of original size [2022-11-02 20:01:22,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 545 case distinctions, treesize of input 565 treesize of output 660 [2022-11-02 20:01:30,843 WARN L234 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 1174 DAG size of output: 192 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-02 20:01:30,847 INFO L356 Elim1Store]: treesize reduction 9606, result has 6.2 percent of original size [2022-11-02 20:01:30,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 35 select indices, 35 select index equivalence classes, 0 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 630 case distinctions, treesize of input 603 treesize of output 704 [2022-11-02 20:01:38,030 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 1042 DAG size of output: 109 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-02 20:01:38,031 INFO L356 Elim1Store]: treesize reduction 9785, result has 4.1 percent of original size [2022-11-02 20:01:38,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 37 select indices, 37 select index equivalence classes, 0 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 685 case distinctions, treesize of input 631 treesize of output 738 [2022-11-02 20:01:46,755 WARN L234 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 1136 DAG size of output: 114 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-02 20:01:46,756 INFO L356 Elim1Store]: treesize reduction 10800, result has 3.9 percent of original size [2022-11-02 20:01:46,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 0 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 761 case distinctions, treesize of input 664 treesize of output 777 [2022-11-02 20:01:56,867 WARN L234 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 1234 DAG size of output: 119 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-02 20:01:56,868 INFO L356 Elim1Store]: treesize reduction 11865, result has 3.8 percent of original size [2022-11-02 20:01:56,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 41 select indices, 41 select index equivalence classes, 0 disjoint index pairs (out of 820 index pairs), introduced 41 new quantified variables, introduced 841 case distinctions, treesize of input 697 treesize of output 816 [2022-11-02 20:02:07,677 WARN L234 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 1336 DAG size of output: 124 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-02 20:02:07,679 INFO L356 Elim1Store]: treesize reduction 12980, result has 3.6 percent of original size [2022-11-02 20:02:07,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 43 select indices, 43 select index equivalence classes, 0 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 925 case distinctions, treesize of input 730 treesize of output 855 [2022-11-02 20:02:24,393 WARN L234 SmtUtils]: Spent 14.50s on a formula simplification. DAG size of input: 1708 DAG size of output: 243 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-02 20:02:24,395 INFO L356 Elim1Store]: treesize reduction 16630, result has 4.8 percent of original size [2022-11-02 20:02:24,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 45 select indices, 45 select index equivalence classes, 0 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 1035 case distinctions, treesize of input 784 treesize of output 915