./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a --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 b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 --- 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-b5237d8 [2022-11-21 13:54:21,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:54:21,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:54:21,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:54:21,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:54:21,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:54:21,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:54:21,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:54:21,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:54:21,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:54:21,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:54:21,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:54:21,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:54:21,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:54:21,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:54:21,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:54:21,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:54:21,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:54:21,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:54:21,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:54:21,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:54:21,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:54:21,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:54:21,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:54:21,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:54:21,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:54:21,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:54:21,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:54:21,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:54:21,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:54:21,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:54:21,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:54:21,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:54:21,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:54:21,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:54:21,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:54:21,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:54:21,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:54:21,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:54:21,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:54:21,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:54:21,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:54:21,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:54:21,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:54:21,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:54:21,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:54:21,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:54:21,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:54:21,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:54:21,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:54:21,585 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:54:21,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:54:21,586 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:54:21,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:54:21,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:54:21,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:54:21,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:54:21,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:54:21,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:54:21,588 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:54:21,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:54:21,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:54:21,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:54:21,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:54:21,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:54:21,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:54:21,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:54:21,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:54:21,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:54:21,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:54:21,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:54:21,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:54:21,592 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:54:21,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:54:21,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:54:21,592 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_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 [2022-11-21 13:54:21,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:54:21,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:54:21,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:54:21,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:54:21,916 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:54:21,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2022-11-21 13:54:25,144 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:54:25,460 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:54:25,461 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2022-11-21 13:54:25,468 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/data/da13d0f1d/2bcde12bdeee41a49dd4aab21da4a903/FLAGf8506227b [2022-11-21 13:54:25,485 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/data/da13d0f1d/2bcde12bdeee41a49dd4aab21da4a903 [2022-11-21 13:54:25,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:54:25,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:54:25,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:54:25,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:54:25,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:54:25,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc2c5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25, skipping insertion in model container [2022-11-21 13:54:25,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:54:25,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:54:25,748 WARN L237 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_88992c18-56cd-4350-ab8c-48fb17f57caa/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2022-11-21 13:54:25,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:54:25,792 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:54:25,815 WARN L237 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_88992c18-56cd-4350-ab8c-48fb17f57caa/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2022-11-21 13:54:25,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:54:25,858 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:54:25,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25 WrapperNode [2022-11-21 13:54:25,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:54:25,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:54:25,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:54:25,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:54:25,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,908 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-11-21 13:54:25,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:54:25,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:54:25,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:54:25,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:54:25,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:54:25,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:54:25,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:54:25,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:54:25,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (1/1) ... [2022-11-21 13:54:25,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:54:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:26,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:54:26,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:54:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:54:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:54:26,159 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:54:26,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:54:26,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:54:26,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:54:26,346 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 13:54:26,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:26 BoogieIcfgContainer [2022-11-21 13:54:26,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:54:26,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:54:26,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:54:26,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:54:26,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:54:25" (1/3) ... [2022-11-21 13:54:26,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15575fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:54:26, skipping insertion in model container [2022-11-21 13:54:26,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:25" (2/3) ... [2022-11-21 13:54:26,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15575fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:54:26, skipping insertion in model container [2022-11-21 13:54:26,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:26" (3/3) ... [2022-11-21 13:54:26,368 INFO L112 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-2.i [2022-11-21 13:54:26,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:54:26,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:54:26,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:54:26,466 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;@32a4ce71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:54:26,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:54:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 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) [2022-11-21 13:54:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 13:54:26,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:26,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:26,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash 916381450, now seen corresponding path program 1 times [2022-11-21 13:54:26,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:26,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960244044] [2022-11-21 13:54:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:26,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:26,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960244044] [2022-11-21 13:54:26,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960244044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:26,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:26,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:54:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037557624] [2022-11-21 13:54:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:26,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:54:26,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:54:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:54:26,746 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:26,761 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-11-21 13:54:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:54:26,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-21 13:54:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:26,773 INFO L225 Difference]: With dead ends: 32 [2022-11-21 13:54:26,773 INFO L226 Difference]: Without dead ends: 16 [2022-11-21 13:54:26,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:54:26,780 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:26,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:54:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-21 13:54:26,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-21 13:54:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-11-21 13:54:26,809 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 8 [2022-11-21 13:54:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:26,810 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-11-21 13:54:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-11-21 13:54:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 13:54:26,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:26,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:26,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:54:26,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:26,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:26,813 INFO L85 PathProgramCache]: Analyzing trace with hash 229281826, now seen corresponding path program 1 times [2022-11-21 13:54:26,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:26,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458204581] [2022-11-21 13:54:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:26,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:26,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:26,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458204581] [2022-11-21 13:54:26,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458204581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:26,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:26,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:54:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560724412] [2022-11-21 13:54:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:26,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:54:26,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:54:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:54:26,926 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:26,985 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-11-21 13:54:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:54:26,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-21 13:54:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:26,987 INFO L225 Difference]: With dead ends: 33 [2022-11-21 13:54:26,987 INFO L226 Difference]: Without dead ends: 25 [2022-11-21 13:54:26,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:54:26,989 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:26,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:54:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-21 13:54:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2022-11-21 13:54:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-11-21 13:54:26,995 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 8 [2022-11-21 13:54:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:26,996 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-21 13:54:26,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:26,996 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-11-21 13:54:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:54:26,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:26,997 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:26,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:54:26,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -528137142, now seen corresponding path program 1 times [2022-11-21 13:54:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827262937] [2022-11-21 13:54:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:54:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:27,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827262937] [2022-11-21 13:54:27,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827262937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:27,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900539330] [2022-11-21 13:54:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:27,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:27,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:54:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:27,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:54:27,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:54:27,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:54:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:54:27,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900539330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:54:27,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:54:27,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-21 13:54:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257077237] [2022-11-21 13:54:27,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:54:27,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:54:27,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:54:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:54:27,583 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2022-11-21 13:54:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:27,763 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-11-21 13:54:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:54:27,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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 16 [2022-11-21 13:54:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:27,766 INFO L225 Difference]: With dead ends: 55 [2022-11-21 13:54:27,767 INFO L226 Difference]: Without dead ends: 45 [2022-11-21 13:54:27,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:54:27,769 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:27,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 29 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:54:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-21 13:54:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2022-11-21 13:54:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-11-21 13:54:27,786 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 16 [2022-11-21 13:54:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:27,787 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-11-21 13:54:27,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2022-11-21 13:54:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-11-21 13:54:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-21 13:54:27,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:27,790 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:27,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:27,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:28,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:28,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash 310337378, now seen corresponding path program 2 times [2022-11-21 13:54:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:28,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806104608] [2022-11-21 13:54:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:28,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 13:54:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806104608] [2022-11-21 13:54:28,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806104608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:28,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020810892] [2022-11-21 13:54:28,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:54:28,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:28,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:28,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:54:28,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:54:28,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:54:28,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:54:28,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:54:28,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:54:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:54:28,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020810892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:54:28,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:54:28,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-11-21 13:54:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050583038] [2022-11-21 13:54:28,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:54:28,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:54:28,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:54:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:54:28,734 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:29,024 INFO L93 Difference]: Finished difference Result 112 states and 158 transitions. [2022-11-21 13:54:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:54:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2022-11-21 13:54:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:29,029 INFO L225 Difference]: With dead ends: 112 [2022-11-21 13:54:29,029 INFO L226 Difference]: Without dead ends: 99 [2022-11-21 13:54:29,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:54:29,031 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 210 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:29,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 46 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:54:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-21 13:54:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2022-11-21 13:54:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2022-11-21 13:54:29,049 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 34 [2022-11-21 13:54:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:29,049 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2022-11-21 13:54:29,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2022-11-21 13:54:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 13:54:29,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:29,054 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:29,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:29,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:29,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -708297260, now seen corresponding path program 3 times [2022-11-21 13:54:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:29,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352381591] [2022-11-21 13:54:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-21 13:54:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352381591] [2022-11-21 13:54:29,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352381591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:29,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825106703] [2022-11-21 13:54:29,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:54:29,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:29,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:29,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:54:29,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 13:54:29,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:54:29,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:54:29,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:30,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 13:54:30,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-11-21 13:54:30,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 13:54:30,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-21 13:54:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-21 13:54:30,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:54:30,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 13:54:30,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 27 treesize of output 28 [2022-11-21 13:54:30,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2022-11-21 13:54:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-21 13:54:30,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825106703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:54:30,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:54:30,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2022-11-21 13:54:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742672866] [2022-11-21 13:54:30,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:54:30,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:54:30,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:54:30,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:54:30,390 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:30,937 INFO L93 Difference]: Finished difference Result 207 states and 289 transitions. [2022-11-21 13:54:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 13:54:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 73 [2022-11-21 13:54:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:30,939 INFO L225 Difference]: With dead ends: 207 [2022-11-21 13:54:30,939 INFO L226 Difference]: Without dead ends: 129 [2022-11-21 13:54:30,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=724, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 13:54:30,942 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 259 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:30,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 52 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:54:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-21 13:54:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 108. [2022-11-21 13:54:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2022-11-21 13:54:30,960 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 73 [2022-11-21 13:54:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:30,960 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2022-11-21 13:54:30,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2022-11-21 13:54:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 13:54:30,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:30,963 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:30,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:31,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash -422151838, now seen corresponding path program 1 times [2022-11-21 13:54:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:31,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140745803] [2022-11-21 13:54:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:31,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 13:54:31,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140745803] [2022-11-21 13:54:31,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140745803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554237239] [2022-11-21 13:54:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:31,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:31,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:31,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:31,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:54:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:54:31,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 13:54:31,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:54:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 13:54:32,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554237239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:54:32,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:54:32,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-21 13:54:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854468921] [2022-11-21 13:54:32,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:54:32,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 13:54:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 13:54:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-21 13:54:32,163 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:32,659 INFO L93 Difference]: Finished difference Result 276 states and 372 transitions. [2022-11-21 13:54:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:54:32,659 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-21 13:54:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:32,665 INFO L225 Difference]: With dead ends: 276 [2022-11-21 13:54:32,665 INFO L226 Difference]: Without dead ends: 251 [2022-11-21 13:54:32,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-21 13:54:32,669 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 413 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:32,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 78 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:54:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-21 13:54:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2022-11-21 13:54:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.31651376146789) internal successors, (287), 218 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 287 transitions. [2022-11-21 13:54:32,712 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 287 transitions. Word has length 76 [2022-11-21 13:54:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:32,714 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 287 transitions. [2022-11-21 13:54:32,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 287 transitions. [2022-11-21 13:54:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-21 13:54:32,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:32,727 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:32,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:32,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:32,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 5109204, now seen corresponding path program 2 times [2022-11-21 13:54:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:32,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759796471] [2022-11-21 13:54:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-21 13:54:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759796471] [2022-11-21 13:54:34,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759796471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393342145] [2022-11-21 13:54:34,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:54:34,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:34,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:34,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:34,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:54:34,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:54:34,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:54:34,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 13:54:34,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-21 13:54:34,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:54:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-21 13:54:35,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393342145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:54:35,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:54:35,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-21 13:54:35,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882617514] [2022-11-21 13:54:35,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:54:35,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-21 13:54:35,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-21 13:54:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-21 13:54:35,562 INFO L87 Difference]: Start difference. First operand 219 states and 287 transitions. Second operand has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:36,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:36,723 INFO L93 Difference]: Finished difference Result 555 states and 754 transitions. [2022-11-21 13:54:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 13:54:36,723 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-11-21 13:54:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:36,728 INFO L225 Difference]: With dead ends: 555 [2022-11-21 13:54:36,728 INFO L226 Difference]: Without dead ends: 515 [2022-11-21 13:54:36,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-21 13:54:36,731 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1017 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:36,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 127 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:54:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-21 13:54:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 447. [2022-11-21 13:54:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.3161434977578474) internal successors, (587), 446 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 587 transitions. [2022-11-21 13:54:36,778 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 587 transitions. Word has length 151 [2022-11-21 13:54:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:36,779 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 587 transitions. [2022-11-21 13:54:36,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 587 transitions. [2022-11-21 13:54:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-21 13:54:36,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:36,791 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:36,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:36,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:36,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash 749201748, now seen corresponding path program 3 times [2022-11-21 13:54:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:36,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570093019] [2022-11-21 13:54:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-21 13:54:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570093019] [2022-11-21 13:54:40,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570093019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042619955] [2022-11-21 13:54:40,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:54:40,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:40,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:40,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:54:44,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-11-21 13:54:44,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:54:44,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 13:54:44,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-11-21 13:54:44,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:54:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-11-21 13:54:46,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042619955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:54:46,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:54:46,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 26, 26] total 74 [2022-11-21 13:54:46,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185347996] [2022-11-21 13:54:46,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:54:46,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-21 13:54:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:46,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-21 13:54:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2022-11-21 13:54:46,113 INFO L87 Difference]: Start difference. First operand 447 states and 587 transitions. Second operand has 74 states, 74 states have (on average 5.283783783783784) internal successors, (391), 74 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:48,618 INFO L93 Difference]: Finished difference Result 875 states and 1167 transitions. [2022-11-21 13:54:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-21 13:54:48,619 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.283783783783784) internal successors, (391), 74 states have internal predecessors, (391), 0 states have call successors, (0), 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 307 [2022-11-21 13:54:48,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:48,623 INFO L225 Difference]: With dead ends: 875 [2022-11-21 13:54:48,623 INFO L226 Difference]: Without dead ends: 799 [2022-11-21 13:54:48,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2022-11-21 13:54:48,650 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2197 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:48,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2197 Valid, 173 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 13:54:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-21 13:54:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 791. [2022-11-21 13:54:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.2734177215189872) internal successors, (1006), 790 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1006 transitions. [2022-11-21 13:54:48,770 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1006 transitions. Word has length 307 [2022-11-21 13:54:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:48,771 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1006 transitions. [2022-11-21 13:54:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.283783783783784) internal successors, (391), 74 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1006 transitions. [2022-11-21 13:54:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-11-21 13:54:48,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:48,786 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:48,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:48,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 823095820, now seen corresponding path program 4 times [2022-11-21 13:54:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18972003] [2022-11-21 13:54:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 20093 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 7597 trivial. 0 not checked. [2022-11-21 13:54:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:56,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18972003] [2022-11-21 13:54:56,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18972003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:54:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105897954] [2022-11-21 13:54:56,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:54:56,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:56,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:56,216 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:56,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:54:56,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:54:56,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:54:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-21 13:54:56,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20093 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 7597 trivial. 0 not checked. [2022-11-21 13:54:57,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20093 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 7597 trivial. 0 not checked. [2022-11-21 13:55:04,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105897954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:04,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:04,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 147 [2022-11-21 13:55:04,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649513434] [2022-11-21 13:55:04,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:04,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-11-21 13:55:04,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:04,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-11-21 13:55:04,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2022-11-21 13:55:04,620 INFO L87 Difference]: Start difference. First operand 791 states and 1006 transitions. Second operand has 147 states, 147 states have (on average 4.9523809523809526) internal successors, (728), 147 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:16,748 INFO L93 Difference]: Finished difference Result 1813 states and 2393 transitions. [2022-11-21 13:55:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-11-21 13:55:16,749 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 4.9523809523809526) internal successors, (728), 147 states have internal predecessors, (728), 0 states have call successors, (0), 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 576 [2022-11-21 13:55:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:16,755 INFO L225 Difference]: With dead ends: 1813 [2022-11-21 13:55:16,755 INFO L226 Difference]: Without dead ends: 1593 [2022-11-21 13:55:16,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1079 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2022-11-21 13:55:16,764 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5266 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 1060 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1060 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:16,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 315 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1060 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 13:55:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-11-21 13:55:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1378. [2022-11-21 13:55:16,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 1.3159041394335511) internal successors, (1812), 1377 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1812 transitions. [2022-11-21 13:55:16,834 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1812 transitions. Word has length 576 [2022-11-21 13:55:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:16,835 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1812 transitions. [2022-11-21 13:55:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 4.9523809523809526) internal successors, (728), 147 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:16,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1812 transitions. [2022-11-21 13:55:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2022-11-21 13:55:16,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:16,876 INFO L195 NwaCegarLoop]: trace histogram [144, 144, 144, 144, 144, 73, 72, 72, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:16,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 13:55:17,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:55:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -361923806, now seen corresponding path program 5 times [2022-11-21 13:55:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:17,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895747052] [2022-11-21 13:55:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 59436 backedges. 0 proven. 51624 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-11-21 13:55:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895747052] [2022-11-21 13:55:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895747052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:38,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77324520] [2022-11-21 13:55:38,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 13:55:38,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:38,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:38,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88992c18-56cd-4350-ab8c-48fb17f57caa/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process