./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R --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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- 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-38b53e6 [2022-11-25 15:39:08,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:39:08,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:39:08,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:39:08,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:39:08,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:39:08,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:39:08,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:39:08,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:39:08,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:39:08,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:39:08,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:39:08,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:39:08,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:39:08,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:39:08,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:39:08,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:39:08,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:39:08,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:39:08,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:39:08,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:39:08,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:39:08,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:39:08,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:39:08,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:39:08,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:39:08,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:39:08,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:39:08,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:39:08,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:39:08,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:39:08,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:39:08,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:39:08,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:39:08,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:39:08,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:39:08,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:39:08,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:39:08,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:39:08,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:39:08,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:39:08,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:39:08,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:39:08,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:39:08,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:39:08,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:39:08,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:39:08,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:39:08,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:39:08,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:39:08,578 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:39:08,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:39:08,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:39:08,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:39:08,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:39:08,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:39:08,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:39:08,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:39:08,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:39:08,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:39:08,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:39:08,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:39:08,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:39:08,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:39:08,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:39:08,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:39:08,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:39:08,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:39:08,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:39:08,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:39:08,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:39:08,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:39:08,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:39:08,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:39:08,584 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:39:08,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:39:08,585 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2022-11-25 15:39:08,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:39:08,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:39:08,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:39:08,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:39:08,883 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:39:08,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/bitvector/num_conversion_2.c [2022-11-25 15:39:11,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:39:12,146 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:39:12,148 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/sv-benchmarks/c/bitvector/num_conversion_2.c [2022-11-25 15:39:12,154 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data/447d3f1cf/f892ca169ecb49ed867fb0561c74c7c6/FLAG1143bfb91 [2022-11-25 15:39:12,172 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data/447d3f1cf/f892ca169ecb49ed867fb0561c74c7c6 [2022-11-25 15:39:12,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:39:12,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:39:12,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:39:12,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:39:12,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:39:12,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c2826b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12, skipping insertion in model container [2022-11-25 15:39:12,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:39:12,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:39:12,397 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_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2022-11-25 15:39:12,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:39:12,425 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:39:12,437 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_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2022-11-25 15:39:12,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:39:12,461 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:39:12,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12 WrapperNode [2022-11-25 15:39:12,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:39:12,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:39:12,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:39:12,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:39:12,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,496 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-25 15:39:12,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:39:12,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:39:12,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:39:12,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:39:12,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:39:12,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:39:12,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:39:12,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:39:12,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (1/1) ... [2022-11-25 15:39:12,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:39:12,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:39:12,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:39:12,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:39:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:39:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:39:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:39:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:39:12,701 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:39:12,703 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:39:12,812 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:39:12,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:39:12,818 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:39:12,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:39:12 BoogieIcfgContainer [2022-11-25 15:39:12,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:39:12,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:39:12,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:39:12,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:39:12,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:39:12" (1/3) ... [2022-11-25 15:39:12,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aefe178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:39:12, skipping insertion in model container [2022-11-25 15:39:12,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:12" (2/3) ... [2022-11-25 15:39:12,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aefe178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:39:12, skipping insertion in model container [2022-11-25 15:39:12,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:39:12" (3/3) ... [2022-11-25 15:39:12,829 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2022-11-25 15:39:12,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:39:12,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:39:12,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:39:12,904 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;@19fc6075, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:39:12,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:39:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 15:39:12,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:12,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:39:12,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-11-25 15:39:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:39:12,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615164159] [2022-11-25 15:39:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:39:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:13,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:39:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615164159] [2022-11-25 15:39:13,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615164159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:13,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:13,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:39:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606533768] [2022-11-25 15:39:13,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:13,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:39:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:39:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:39:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:39:13,108 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:13,123 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-25 15:39:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:39:13,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-25 15:39:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:13,133 INFO L225 Difference]: With dead ends: 21 [2022-11-25 15:39:13,134 INFO L226 Difference]: Without dead ends: 9 [2022-11-25 15:39:13,136 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 [2022-11-25 15:39:13,143 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2022-11-25 15:39:13,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-25 15:39:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-25 15:39:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-25 15:39:13,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-25 15:39:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:13,183 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-25 15:39:13,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-25 15:39:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 15:39:13,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:13,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:39:13,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:39:13,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-11-25 15:39:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:39:13,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253468090] [2022-11-25 15:39:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:39:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:39:13,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253468090] [2022-11-25 15:39:13,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253468090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:13,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:13,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:39:13,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613144609] [2022-11-25 15:39:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:13,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:39:13,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:39:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:39:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:39:13,328 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:13,371 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-25 15:39:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:39:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-25 15:39:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:13,373 INFO L225 Difference]: With dead ends: 16 [2022-11-25 15:39:13,373 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 15:39:13,373 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 [2022-11-25 15:39:13,375 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:13,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 15:39:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-11-25 15:39:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-25 15:39:13,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2022-11-25 15:39:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:13,380 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-25 15:39:13,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-25 15:39:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 15:39:13,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:13,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:13,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:39:13,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-11-25 15:39:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:39:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75462014] [2022-11-25 15:39:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:13,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:39:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:39:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75462014] [2022-11-25 15:39:13,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75462014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76086884] [2022-11-25 15:39:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:13,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:39:13,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:39:13,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:39:13,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:39:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:13,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:39:13,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:13,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:13,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76086884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:13,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:39:13,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2022-11-25 15:39:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349887952] [2022-11-25 15:39:13,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:39:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:39:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:39:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:39:13,822 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:13,872 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-11-25 15:39:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:39:13,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 15:39:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:13,873 INFO L225 Difference]: With dead ends: 23 [2022-11-25 15:39:13,873 INFO L226 Difference]: Without dead ends: 19 [2022-11-25 15:39:13,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:39:13,875 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:13,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-25 15:39:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-25 15:39:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-25 15:39:13,882 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-11-25 15:39:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:13,882 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-25 15:39:13,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-25 15:39:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 15:39:13,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:13,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:13,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:14,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:39:14,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2022-11-25 15:39:14,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:39:14,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168187587] [2022-11-25 15:39:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:39:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:14,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:39:14,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168187587] [2022-11-25 15:39:14,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168187587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:14,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913394783] [2022-11-25 15:39:14,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:39:14,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:39:14,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:39:14,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:39:14,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:39:14,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:39:14,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:39:14,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:39:14,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:14,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:14,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913394783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:14,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:39:14,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2022-11-25 15:39:14,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488468416] [2022-11-25 15:39:14,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:14,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:39:14,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:39:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:39:14,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:39:14,935 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:15,341 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2022-11-25 15:39:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:39:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 18 [2022-11-25 15:39:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:15,342 INFO L225 Difference]: With dead ends: 41 [2022-11-25 15:39:15,343 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 15:39:15,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:39:15,344 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:15,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 96 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:39:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 15:39:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-25 15:39:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-11-25 15:39:15,353 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-11-25 15:39:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:15,354 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-11-25 15:39:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-11-25 15:39:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:39:15,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:15,356 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:15,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:15,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:39:15,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2022-11-25 15:39:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:39:15,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562764208] [2022-11-25 15:39:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:39:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:39:15,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:39:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:39:15,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:39:15,655 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:39:15,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 15:39:15,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:39:15,662 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-11-25 15:39:15,665 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:39:15,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:39:15 BoogieIcfgContainer [2022-11-25 15:39:15,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:39:15,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:39:15,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:39:15,696 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:39:15,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:39:12" (3/4) ... [2022-11-25 15:39:15,699 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 15:39:15,699 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:39:15,700 INFO L158 Benchmark]: Toolchain (without parser) took 3520.88ms. Allocated memory is still 188.7MB. Free memory was 146.6MB in the beginning and 83.7MB in the end (delta: 62.9MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2022-11-25 15:39:15,700 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory was 72.1MB in the beginning and 72.1MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:39:15,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.51ms. Allocated memory is still 188.7MB. Free memory was 146.6MB in the beginning and 136.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:39:15,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.50ms. Allocated memory is still 188.7MB. Free memory was 136.9MB in the beginning and 134.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:39:15,702 INFO L158 Benchmark]: Boogie Preprocessor took 34.04ms. Allocated memory is still 188.7MB. Free memory was 134.8MB in the beginning and 134.0MB in the end (delta: 710.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:39:15,702 INFO L158 Benchmark]: RCFGBuilder took 288.23ms. Allocated memory is still 188.7MB. Free memory was 134.0MB in the beginning and 124.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:39:15,703 INFO L158 Benchmark]: TraceAbstraction took 2871.89ms. Allocated memory is still 188.7MB. Free memory was 123.6MB in the beginning and 83.7MB in the end (delta: 39.9MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2022-11-25 15:39:15,703 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 188.7MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:39:15,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory was 72.1MB in the beginning and 72.1MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.51ms. Allocated memory is still 188.7MB. Free memory was 146.6MB in the beginning and 136.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.50ms. Allocated memory is still 188.7MB. Free memory was 136.9MB in the beginning and 134.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.04ms. Allocated memory is still 188.7MB. Free memory was 134.8MB in the beginning and 134.0MB in the end (delta: 710.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.23ms. Allocated memory is still 188.7MB. Free memory was 134.0MB in the beginning and 124.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2871.89ms. Allocated memory is still 188.7MB. Free memory was 123.6MB in the beginning and 83.7MB in the end (delta: 39.9MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 188.7MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 31, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L24] unsigned char x = __VERIFIER_nondet_uchar(); [L25] unsigned char y; [L26] unsigned char c; [L28] y = 0 [L29] c = 0 VAL [c=0, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=0, i=2, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=0, i=2, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=1, i=2, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=1, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=1, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=2, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=2, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=2, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=3, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=3, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=3, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=4, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=4, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=4, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=5, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=5, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=5, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=6, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=6, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=6, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=7, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=7, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=7, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=8, i=1, x=4, y=0] [L30] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, i=1, x=4, y=0] [L38] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 47 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 450 SizeOfPredicates, 8 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 15:39:15,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R --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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- 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-38b53e6 [2022-11-25 15:39:18,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:39:18,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:39:18,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:39:18,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:39:18,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:39:18,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:39:18,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:39:18,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:39:18,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:39:18,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:39:18,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:39:18,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:39:18,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:39:18,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:39:18,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:39:18,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:39:18,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:39:18,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:39:18,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:39:18,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:39:18,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:39:18,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:39:18,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:39:18,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:39:18,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:39:18,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:39:18,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:39:18,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:39:18,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:39:18,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:39:18,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:39:18,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:39:18,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:39:18,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:39:18,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:39:18,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:39:18,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:39:18,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:39:18,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:39:18,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:39:18,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 15:39:18,288 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:39:18,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:39:18,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:39:18,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:39:18,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:39:18,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:39:18,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:39:18,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:39:18,291 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:39:18,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:39:18,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:39:18,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:39:18,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:39:18,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:39:18,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:39:18,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:39:18,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:39:18,293 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:39:18,293 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:39:18,293 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:39:18,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:39:18,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:39:18,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:39:18,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:39:18,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:39:18,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:39:18,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:39:18,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:39:18,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:39:18,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:39:18,296 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:39:18,296 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:39:18,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:39:18,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:39:18,297 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:39:18,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:39:18,297 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:39:18,297 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2022-11-25 15:39:18,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:39:18,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:39:18,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:39:18,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:39:18,702 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:39:18,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/bitvector/num_conversion_2.c [2022-11-25 15:39:21,830 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:39:22,018 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:39:22,018 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/sv-benchmarks/c/bitvector/num_conversion_2.c [2022-11-25 15:39:22,032 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data/fd3a0c9b1/04575f46861244dea8ce26b8928e2d01/FLAG0a099b84b [2022-11-25 15:39:22,055 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/data/fd3a0c9b1/04575f46861244dea8ce26b8928e2d01 [2022-11-25 15:39:22,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:39:22,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:39:22,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:39:22,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:39:22,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:39:22,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da212f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22, skipping insertion in model container [2022-11-25 15:39:22,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:39:22,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:39:22,254 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_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2022-11-25 15:39:22,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:39:22,282 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:39:22,295 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_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2022-11-25 15:39:22,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:39:22,314 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:39:22,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22 WrapperNode [2022-11-25 15:39:22,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:39:22,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:39:22,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:39:22,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:39:22,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,348 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-25 15:39:22,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:39:22,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:39:22,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:39:22,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:39:22,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:39:22,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:39:22,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:39:22,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:39:22,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (1/1) ... [2022-11-25 15:39:22,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:39:22,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:39:22,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:39:22,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:39:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:39:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:39:22,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:39:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 15:39:22,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:39:22,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:39:22,742 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:39:22,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:39:22,749 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:39:22,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:39:22 BoogieIcfgContainer [2022-11-25 15:39:22,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:39:22,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:39:22,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:39:22,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:39:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:39:22" (1/3) ... [2022-11-25 15:39:22,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a16e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:39:22, skipping insertion in model container [2022-11-25 15:39:22,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:39:22" (2/3) ... [2022-11-25 15:39:22,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a16e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:39:22, skipping insertion in model container [2022-11-25 15:39:22,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:39:22" (3/3) ... [2022-11-25 15:39:22,761 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2022-11-25 15:39:22,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:39:22,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:39:22,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:39:22,841 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;@7fb64cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:39:22,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:39:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:22,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 15:39:22,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:22,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:39:22,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-11-25 15:39:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239240149] [2022-11-25 15:39:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:22,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:22,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:22,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:39:22,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 15:39:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:22,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 15:39:22,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:23,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:23,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:23,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239240149] [2022-11-25 15:39:23,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239240149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:23,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:23,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:39:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027576544] [2022-11-25 15:39:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:39:23,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:39:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:39:23,082 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:23,101 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-25 15:39:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:39:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-25 15:39:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:23,114 INFO L225 Difference]: With dead ends: 21 [2022-11-25 15:39:23,114 INFO L226 Difference]: Without dead ends: 9 [2022-11-25 15:39:23,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:39:23,126 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2022-11-25 15:39:23,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-25 15:39:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-25 15:39:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-25 15:39:23,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-25 15:39:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:23,180 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-25 15:39:23,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,181 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-25 15:39:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 15:39:23,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:23,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:39:23,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 15:39:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:23,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-11-25 15:39:23,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:23,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380441513] [2022-11-25 15:39:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:23,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:23,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:39:23,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 15:39:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:23,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:39:23,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:23,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:23,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380441513] [2022-11-25 15:39:23,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380441513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:23,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:23,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:39:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657437925] [2022-11-25 15:39:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:23,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:39:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:39:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:39:23,506 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:23,533 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-25 15:39:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:39:23,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-25 15:39:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:23,535 INFO L225 Difference]: With dead ends: 16 [2022-11-25 15:39:23,536 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 15:39:23,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:39:23,537 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:23,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 15:39:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-11-25 15:39:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-25 15:39:23,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2022-11-25 15:39:23,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:23,543 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-25 15:39:23,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-25 15:39:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 15:39:23,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:23,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:23,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:23,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:23,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-11-25 15:39:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70370494] [2022-11-25 15:39:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:23,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:23,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:39:23,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 15:39:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:23,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:39:23,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:23,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:23,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:23,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70370494] [2022-11-25 15:39:23,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70370494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:23,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:23,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 15:39:23,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699890076] [2022-11-25 15:39:23,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:23,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:39:23,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:39:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:39:23,880 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:23,968 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-11-25 15:39:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:39:23,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 15:39:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:23,970 INFO L225 Difference]: With dead ends: 23 [2022-11-25 15:39:23,970 INFO L226 Difference]: Without dead ends: 19 [2022-11-25 15:39:23,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:39:23,972 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:23,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-25 15:39:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-25 15:39:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-25 15:39:23,979 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-11-25 15:39:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:23,980 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-25 15:39:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-25 15:39:23,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 15:39:23,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:23,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:24,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:24,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:24,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:24,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:24,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2022-11-25 15:39:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:24,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639552858] [2022-11-25 15:39:24,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:39:24,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:24,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:24,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:39:24,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 15:39:24,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:39:24,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:39:24,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:39:24,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:24,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:24,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:24,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639552858] [2022-11-25 15:39:24,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639552858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:24,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:24,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 15:39:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435598419] [2022-11-25 15:39:24,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:24,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:39:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:39:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:39:24,668 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:24,874 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-11-25 15:39:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:39:24,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 18 [2022-11-25 15:39:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:24,879 INFO L225 Difference]: With dead ends: 35 [2022-11-25 15:39:24,880 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 15:39:24,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:39:24,882 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:24,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:39:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 15:39:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-25 15:39:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-11-25 15:39:24,894 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2022-11-25 15:39:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:24,894 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-11-25 15:39:24,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-11-25 15:39:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:39:24,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:24,896 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:24,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:25,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2022-11-25 15:39:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:25,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066013718] [2022-11-25 15:39:25,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:39:25,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:25,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:25,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:39:25,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 15:39:25,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-25 15:39:25,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:39:25,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 15:39:25,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:28,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:34,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:34,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066013718] [2022-11-25 15:39:34,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066013718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:34,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:34,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2022-11-25 15:39:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940465989] [2022-11-25 15:39:34,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-25 15:39:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-25 15:39:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 15:39:34,186 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:56,344 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2022-11-25 15:39:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-25 15:39:56,344 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2022-11-25 15:39:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:56,348 INFO L225 Difference]: With dead ends: 162 [2022-11-25 15:39:56,348 INFO L226 Difference]: Without dead ends: 156 [2022-11-25 15:39:56,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=2530, Invalid=9026, Unknown=0, NotChecked=0, Total=11556 [2022-11-25 15:39:56,353 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 167 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:56,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 70 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 15:39:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-25 15:39:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2022-11-25 15:39:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 94 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2022-11-25 15:39:56,389 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 30 [2022-11-25 15:39:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:56,390 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2022-11-25 15:39:56,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:39:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2022-11-25 15:39:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:39:56,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:56,392 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:56,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:56,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:56,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:39:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1777786732, now seen corresponding path program 1 times [2022-11-25 15:39:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443743480] [2022-11-25 15:39:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:56,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:39:56,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:56,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:39:56,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 15:39:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:56,659 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 15:39:56,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:39:58,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:40:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:40:02,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:40:02,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443743480] [2022-11-25 15:40:02,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443743480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:40:02,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:40:02,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 15:40:02,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422841289] [2022-11-25 15:40:02,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:40:02,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 15:40:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:40:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 15:40:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:40:02,633 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:40:56,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:40:56,453 INFO L93 Difference]: Finished difference Result 419 states and 575 transitions. [2022-11-25 15:40:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-11-25 15:40:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:40:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:40:56,457 INFO L225 Difference]: With dead ends: 419 [2022-11-25 15:40:56,457 INFO L226 Difference]: Without dead ends: 365 [2022-11-25 15:40:56,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12574 ImplicationChecksByTransitivity, 53.5s TimeCoverageRelationStatistics Valid=5964, Invalid=33042, Unknown=0, NotChecked=0, Total=39006 [2022-11-25 15:40:56,466 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 320 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:40:56,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 118 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 15:40:56,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-25 15:40:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 201. [2022-11-25 15:40:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.375) internal successors, (275), 200 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:40:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2022-11-25 15:40:56,547 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 30 [2022-11-25 15:40:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:40:56,548 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2022-11-25 15:40:56,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:40:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2022-11-25 15:40:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:40:56,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:40:56,550 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:40:56,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:40:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:40:56,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:40:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:40:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1894380496, now seen corresponding path program 2 times [2022-11-25 15:40:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:40:56,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750857789] [2022-11-25 15:40:56,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:40:56,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:40:56,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:40:56,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:40:56,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 15:40:56,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:40:56,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:40:56,786 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 15:40:56,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:40:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:40:58,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:41:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:41:02,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:41:02,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750857789] [2022-11-25 15:41:02,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750857789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:41:02,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:41:02,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 15:41:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495956505] [2022-11-25 15:41:02,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:41:02,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 15:41:02,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:41:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 15:41:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:41:02,675 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:42:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:42:00,769 INFO L93 Difference]: Finished difference Result 393 states and 512 transitions. [2022-11-25 15:42:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-11-25 15:42:00,770 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:42:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:42:00,771 INFO L225 Difference]: With dead ends: 393 [2022-11-25 15:42:00,772 INFO L226 Difference]: Without dead ends: 336 [2022-11-25 15:42:00,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 58.7s TimeCoverageRelationStatistics Valid=5431, Invalid=32789, Unknown=0, NotChecked=0, Total=38220 [2022-11-25 15:42:00,780 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 210 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:42:00,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 121 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 15:42:00,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-25 15:42:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 222. [2022-11-25 15:42:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 221 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:42:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2022-11-25 15:42:00,851 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 30 [2022-11-25 15:42:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:42:00,852 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2022-11-25 15:42:00,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:42:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2022-11-25 15:42:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:42:00,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:42:00,854 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:42:00,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:42:01,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:42:01,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:42:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:42:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1978693868, now seen corresponding path program 3 times [2022-11-25 15:42:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:42:01,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465705877] [2022-11-25 15:42:01,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:42:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:42:01,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:42:01,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:42:01,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 15:42:01,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-25 15:42:01,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:42:01,114 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 15:42:01,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:42:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:42:03,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:42:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:42:09,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:42:09,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465705877] [2022-11-25 15:42:09,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465705877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:42:09,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:42:09,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2022-11-25 15:42:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363865232] [2022-11-25 15:42:09,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:42:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-25 15:42:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:42:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-25 15:42:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 15:42:09,028 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:00,174 INFO L93 Difference]: Finished difference Result 592 states and 762 transitions. [2022-11-25 15:43:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-25 15:43:00,176 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:43:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:00,178 INFO L225 Difference]: With dead ends: 592 [2022-11-25 15:43:00,179 INFO L226 Difference]: Without dead ends: 584 [2022-11-25 15:43:00,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5569 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=3261, Invalid=15371, Unknown=0, NotChecked=0, Total=18632 [2022-11-25 15:43:00,182 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 226 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:00,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 111 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 15:43:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-25 15:43:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 343. [2022-11-25 15:43:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3421052631578947) internal successors, (459), 342 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2022-11-25 15:43:00,325 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 30 [2022-11-25 15:43:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:00,326 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2022-11-25 15:43:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:43:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2022-11-25 15:43:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:43:00,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:00,328 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:00,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:43:00,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:43:00,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:43:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2035952170, now seen corresponding path program 4 times [2022-11-25 15:43:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:43:00,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534920376] [2022-11-25 15:43:00,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:43:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:43:00,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:43:00,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:43:00,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 15:43:00,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:43:00,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:43:00,584 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 15:43:00,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:43:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:02,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:43:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:43:06,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:43:06,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534920376] [2022-11-25 15:43:06,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534920376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:43:06,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:43:06,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 15:43:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922552466] [2022-11-25 15:43:06,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:43:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 15:43:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:43:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 15:43:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:43:06,485 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:44:19,912 INFO L93 Difference]: Finished difference Result 681 states and 899 transitions. [2022-11-25 15:44:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-11-25 15:44:19,913 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:44:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:44:19,915 INFO L225 Difference]: With dead ends: 681 [2022-11-25 15:44:19,915 INFO L226 Difference]: Without dead ends: 637 [2022-11-25 15:44:19,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15488 ImplicationChecksByTransitivity, 72.7s TimeCoverageRelationStatistics Valid=6319, Invalid=40121, Unknown=0, NotChecked=0, Total=46440 [2022-11-25 15:44:19,921 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:44:19,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 170 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 15:44:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-25 15:44:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 454. [2022-11-25 15:44:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3642384105960266) internal successors, (618), 453 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 618 transitions. [2022-11-25 15:44:20,152 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 618 transitions. Word has length 30 [2022-11-25 15:44:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:44:20,152 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 618 transitions. [2022-11-25 15:44:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 618 transitions. [2022-11-25 15:44:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:44:20,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:44:20,156 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:44:20,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-25 15:44:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:44:20,362 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:44:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:20,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1636215058, now seen corresponding path program 5 times [2022-11-25 15:44:20,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:44:20,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227619668] [2022-11-25 15:44:20,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:44:20,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:44:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:44:20,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:44:20,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 15:44:20,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-25 15:44:20,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:44:20,400 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 15:44:20,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:21,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:26,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:44:26,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227619668] [2022-11-25 15:44:26,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227619668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:26,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:44:26,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 15:44:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775599604] [2022-11-25 15:44:26,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:26,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 15:44:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:44:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 15:44:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:44:26,775 INFO L87 Difference]: Start difference. First operand 454 states and 618 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:20,683 INFO L93 Difference]: Finished difference Result 645 states and 869 transitions. [2022-11-25 15:45:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-25 15:45:20,684 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:45:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:20,686 INFO L225 Difference]: With dead ends: 645 [2022-11-25 15:45:20,686 INFO L226 Difference]: Without dead ends: 596 [2022-11-25 15:45:20,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=3942, Invalid=22790, Unknown=0, NotChecked=0, Total=26732 [2022-11-25 15:45:20,689 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 157 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:20,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 65 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 15:45:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-25 15:45:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 480. [2022-11-25 15:45:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 479 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 651 transitions. [2022-11-25 15:45:20,875 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 651 transitions. Word has length 30 [2022-11-25 15:45:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:20,875 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 651 transitions. [2022-11-25 15:45:20,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 651 transitions. [2022-11-25 15:45:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:45:20,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:20,876 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:20,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:21,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:21,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1578956756, now seen corresponding path program 6 times [2022-11-25 15:45:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:45:21,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293125494] [2022-11-25 15:45:21,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 15:45:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:45:21,089 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:45:21,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 15:45:21,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-25 15:45:21,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:21,150 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 15:45:21,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:23,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:28,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:45:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293125494] [2022-11-25 15:45:28,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293125494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:45:28,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:45:28,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2022-11-25 15:45:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908462187] [2022-11-25 15:45:28,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-25 15:45:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:45:28,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-25 15:45:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2449, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 15:45:28,690 INFO L87 Difference]: Start difference. First operand 480 states and 651 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:39,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:49:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:23,564 INFO L93 Difference]: Finished difference Result 1004 states and 1335 transitions. [2022-11-25 15:49:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-25 15:49:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:49:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:23,569 INFO L225 Difference]: With dead ends: 1004 [2022-11-25 15:49:23,569 INFO L226 Difference]: Without dead ends: 990 [2022-11-25 15:49:23,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17936 ImplicationChecksByTransitivity, 224.4s TimeCoverageRelationStatistics Valid=7491, Invalid=46563, Unknown=2, NotChecked=0, Total=54056 [2022-11-25 15:49:23,574 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 328 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:23,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 315 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2070 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2022-11-25 15:49:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-25 15:49:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 802. [2022-11-25 15:49:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.373283395755306) internal successors, (1100), 801 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1100 transitions. [2022-11-25 15:49:23,993 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1100 transitions. Word has length 30 [2022-11-25 15:49:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:23,993 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1100 transitions. [2022-11-25 15:49:23,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1100 transitions. [2022-11-25 15:49:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:49:23,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:23,995 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:24,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:24,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:49:24,206 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:49:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:24,207 INFO L85 PathProgramCache]: Analyzing trace with hash -497923054, now seen corresponding path program 7 times [2022-11-25 15:49:24,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:49:24,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99270830] [2022-11-25 15:49:24,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 15:49:24,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:49:24,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:49:24,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:49:24,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 15:49:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:24,240 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 15:49:24,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:25,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:49:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:31,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:49:31,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99270830] [2022-11-25 15:49:31,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99270830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:49:31,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:49:31,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 15:49:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356778138] [2022-11-25 15:49:31,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:49:31,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 15:49:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:49:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 15:49:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2257, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:49:31,031 INFO L87 Difference]: Start difference. First operand 802 states and 1100 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:56,325 INFO L93 Difference]: Finished difference Result 1186 states and 1602 transitions. [2022-11-25 15:50:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-11-25 15:50:56,326 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:50:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:56,330 INFO L225 Difference]: With dead ends: 1186 [2022-11-25 15:50:56,330 INFO L226 Difference]: Without dead ends: 1138 [2022-11-25 15:50:56,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15913 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=6191, Invalid=41551, Unknown=0, NotChecked=0, Total=47742 [2022-11-25 15:50:56,333 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 214 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:56,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 145 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-25 15:50:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-11-25 15:50:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 930. [2022-11-25 15:50:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.3702906350914963) internal successors, (1273), 929 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1273 transitions. [2022-11-25 15:50:56,813 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1273 transitions. Word has length 30 [2022-11-25 15:50:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:56,814 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1273 transitions. [2022-11-25 15:50:56,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1273 transitions. [2022-11-25 15:50:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:50:56,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:56,816 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:56,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-25 15:50:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:50:57,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1120723122, now seen corresponding path program 8 times [2022-11-25 15:50:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:50:57,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325732829] [2022-11-25 15:50:57,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:50:57,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:50:57,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:50:57,029 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:50:57,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-25 15:50:57,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:50:57,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:50:57,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 15:50:57,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:50:58,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:51:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:03,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:51:03,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325732829] [2022-11-25 15:51:03,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325732829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:51:03,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:51:03,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 15:51:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611293126] [2022-11-25 15:51:03,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:51:03,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 15:51:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:51:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 15:51:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2285, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:51:03,819 INFO L87 Difference]: Start difference. First operand 930 states and 1273 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:03,592 INFO L93 Difference]: Finished difference Result 1195 states and 1622 transitions. [2022-11-25 15:52:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-11-25 15:52:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-25 15:52:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:03,595 INFO L225 Difference]: With dead ends: 1195 [2022-11-25 15:52:03,595 INFO L226 Difference]: Without dead ends: 1131 [2022-11-25 15:52:03,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9482 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=4178, Invalid=26622, Unknown=0, NotChecked=0, Total=30800 [2022-11-25 15:52:03,599 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 185 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:03,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 151 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 15:52:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-11-25 15:52:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 978. [2022-11-25 15:52:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3674513817809621) internal successors, (1336), 977 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1336 transitions. [2022-11-25 15:52:04,164 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1336 transitions. Word has length 30 [2022-11-25 15:52:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:04,164 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1336 transitions. [2022-11-25 15:52:04,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1336 transitions. [2022-11-25 15:52:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 15:52:04,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:04,166 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:04,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:52:04,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:52:04,377 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1378888560, now seen corresponding path program 9 times [2022-11-25 15:52:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:52:04,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050835789] [2022-11-25 15:52:04,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:52:04,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:52:04,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:52:04,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:52:04,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99762c1b-e1ab-4d78-a9ae-dd82adb3d83e/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 15:52:04,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-25 15:52:04,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:52:04,421 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 15:52:04,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:52:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:07,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:52:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:14,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:52:14,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050835789] [2022-11-25 15:52:14,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050835789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:52:14,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:52:14,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2022-11-25 15:52:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829948994] [2022-11-25 15:52:14,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:52:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-25 15:52:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:52:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-25 15:52:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 15:52:14,717 INFO L87 Difference]: Start difference. First operand 978 states and 1336 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)