./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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_290c279e-f95c-42fe-a975-46fd93c6f289/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 a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- 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 16:43:34,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:43:34,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:43:34,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:43:34,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:43:34,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:43:34,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:43:34,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:43:34,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:43:34,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:43:34,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:43:34,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:43:34,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:43:34,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:43:34,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:43:34,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:43:34,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:43:34,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:43:34,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:43:34,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:43:34,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:43:34,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:43:34,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:43:34,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:43:34,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:43:34,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:43:34,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:43:34,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:43:34,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:43:34,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:43:34,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:43:34,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:43:34,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:43:34,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:43:34,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:43:34,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:43:34,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:43:34,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:43:34,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:43:34,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:43:34,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:43:34,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:43:34,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:43:34,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:43:34,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:43:34,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:43:34,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:43:34,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:43:34,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:43:34,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:43:34,536 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:43:34,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:43:34,538 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:43:34,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:43:34,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:43:34,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:43:34,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:43:34,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:43:34,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:43:34,540 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:43:34,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:43:34,540 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:43:34,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:43:34,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:43:34,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:43:34,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:43:34,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:43:34,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:43:34,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:43:34,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:43:34,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:43:34,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:43:34,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:43:34,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:43:34,544 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:43:34,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:43:34,544 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_290c279e-f95c-42fe-a975-46fd93c6f289/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2022-11-25 16:43:34,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:43:34,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:43:34,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:43:34,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:43:34,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:43:34,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-tiling/mbpr3.c [2022-11-25 16:43:38,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:43:38,311 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:43:38,311 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/sv-benchmarks/c/array-tiling/mbpr3.c [2022-11-25 16:43:38,319 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data/27b10168f/1136742b41a2454484e5c4d3fe988a14/FLAG6d45d657a [2022-11-25 16:43:38,341 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data/27b10168f/1136742b41a2454484e5c4d3fe988a14 [2022-11-25 16:43:38,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:43:38,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:43:38,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:43:38,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:43:38,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:43:38,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e472bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38, skipping insertion in model container [2022-11-25 16:43:38,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:43:38,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:43:38,597 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_290c279e-f95c-42fe-a975-46fd93c6f289/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-11-25 16:43:38,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:43:38,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:43:38,652 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_290c279e-f95c-42fe-a975-46fd93c6f289/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-11-25 16:43:38,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:43:38,684 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:43:38,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38 WrapperNode [2022-11-25 16:43:38,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:43:38,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:43:38,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:43:38,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:43:38,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,744 INFO L138 Inliner]: procedures = 15, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2022-11-25 16:43:38,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:43:38,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:43:38,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:43:38,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:43:38,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:43:38,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:43:38,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:43:38,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:43:38,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (1/1) ... [2022-11-25 16:43:38,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:43:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:38,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:43:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:43:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:43:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:43:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:43:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:43:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:43:38,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:43:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:43:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:43:38,938 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:43:38,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:43:39,298 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:43:39,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:43:39,304 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 16:43:39,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:43:39 BoogieIcfgContainer [2022-11-25 16:43:39,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:43:39,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:43:39,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:43:39,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:43:39,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:43:38" (1/3) ... [2022-11-25 16:43:39,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132b923f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:43:39, skipping insertion in model container [2022-11-25 16:43:39,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:38" (2/3) ... [2022-11-25 16:43:39,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132b923f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:43:39, skipping insertion in model container [2022-11-25 16:43:39,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:43:39" (3/3) ... [2022-11-25 16:43:39,314 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2022-11-25 16:43:39,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:43:39,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:43:39,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:43:39,409 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;@1b8468ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:43:39,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:43:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 16:43:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 16:43:39,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:39,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:39,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -565609025, now seen corresponding path program 1 times [2022-11-25 16:43:39,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:39,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497791022] [2022-11-25 16:43:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:39,649 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 16:43:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:39,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497791022] [2022-11-25 16:43:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497791022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:39,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:39,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971226465] [2022-11-25 16:43:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:43:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:43:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:43:39,710 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:39,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:39,729 INFO L93 Difference]: Finished difference Result 63 states and 90 transitions. [2022-11-25 16:43:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:43:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 16:43:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:39,740 INFO L225 Difference]: With dead ends: 63 [2022-11-25 16:43:39,740 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 16:43:39,743 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 16:43:39,747 INFO L413 NwaCegarLoop]: 43 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, 43 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 16:43:39,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:43:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 16:43:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-25 16:43:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 16:43:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-25 16:43:39,795 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2022-11-25 16:43:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:39,795 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-25 16:43:39,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-25 16:43:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 16:43:39,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:39,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:39,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:43:39,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1539779609, now seen corresponding path program 1 times [2022-11-25 16:43:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:39,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989082490] [2022-11-25 16:43:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:40,132 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 16:43:40,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:40,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989082490] [2022-11-25 16:43:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989082490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:40,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:40,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:43:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415945431] [2022-11-25 16:43:40,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:43:40,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:43:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:43:40,137 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:40,207 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-25 16:43:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:43:40,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 16:43:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:40,209 INFO L225 Difference]: With dead ends: 38 [2022-11-25 16:43:40,209 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 16:43:40,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:40,211 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:40,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:43:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 16:43:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-11-25 16:43:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 16:43:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-25 16:43:40,222 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 17 [2022-11-25 16:43:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:40,223 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-25 16:43:40,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-25 16:43:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 16:43:40,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:40,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:43:40,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:40,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1539720027, now seen corresponding path program 1 times [2022-11-25 16:43:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:40,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230303839] [2022-11-25 16:43:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:40,589 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 16:43:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:40,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230303839] [2022-11-25 16:43:40,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230303839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:40,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:40,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:43:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713369369] [2022-11-25 16:43:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:40,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:43:40,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:40,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:43:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:40,599 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:40,744 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-11-25 16:43:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:43:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 16:43:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:40,747 INFO L225 Difference]: With dead ends: 64 [2022-11-25 16:43:40,747 INFO L226 Difference]: Without dead ends: 43 [2022-11-25 16:43:40,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:40,756 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:40,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 23 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:43:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-25 16:43:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-11-25 16:43:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 16:43:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-25 16:43:40,769 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2022-11-25 16:43:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:40,770 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-25 16:43:40,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:40,770 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-25 16:43:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 16:43:40,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:40,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:40,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:43:40,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2048606314, now seen corresponding path program 1 times [2022-11-25 16:43:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:40,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107273487] [2022-11-25 16:43:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:41,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107273487] [2022-11-25 16:43:41,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107273487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:41,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:41,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:43:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029466998] [2022-11-25 16:43:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:41,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:41,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:41,008 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 16:43:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:41,052 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-11-25 16:43:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-25 16:43:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:41,055 INFO L225 Difference]: With dead ends: 49 [2022-11-25 16:43:41,056 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 16:43:41,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:43:41,057 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:41,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:43:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 16:43:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-25 16:43:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-11-25 16:43:41,074 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2022-11-25 16:43:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:41,074 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-11-25 16:43:41,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 16:43:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-11-25 16:43:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 16:43:41,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:41,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:43:41,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1853333972, now seen corresponding path program 1 times [2022-11-25 16:43:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:41,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438818036] [2022-11-25 16:43:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:43:42,006 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 16:43:42,016 INFO L158 Benchmark]: Toolchain (without parser) took 3668.49ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 108.0MB in the beginning and 131.0MB in the end (delta: -22.9MB). Peak memory consumption was 103.9MB. Max. memory is 16.1GB. [2022-11-25 16:43:42,016 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:43:42,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.91ms. Allocated memory is still 138.4MB. Free memory was 107.6MB in the beginning and 96.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:43:42,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.21ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 94.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:43:42,022 INFO L158 Benchmark]: Boogie Preprocessor took 33.51ms. Allocated memory is still 138.4MB. Free memory was 94.3MB in the beginning and 92.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:43:42,022 INFO L158 Benchmark]: RCFGBuilder took 526.87ms. Allocated memory is still 138.4MB. Free memory was 92.5MB in the beginning and 78.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 16:43:42,022 INFO L158 Benchmark]: TraceAbstraction took 2705.32ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 78.3MB in the beginning and 131.0MB in the end (delta: -52.7MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2022-11-25 16:43:42,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.91ms. Allocated memory is still 138.4MB. Free memory was 107.6MB in the beginning and 96.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.21ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 94.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.51ms. Allocated memory is still 138.4MB. Free memory was 94.3MB in the beginning and 92.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.87ms. Allocated memory is still 138.4MB. Free memory was 92.5MB in the beginning and 78.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2705.32ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 78.3MB in the beginning and 131.0MB in the end (delta: -52.7MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-25 16:43:42,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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_290c279e-f95c-42fe-a975-46fd93c6f289/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 a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- 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 16:43:44,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:43:44,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:43:44,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:43:44,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:43:44,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:43:44,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:43:44,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:43:44,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:43:44,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:43:44,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:43:44,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:43:44,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:43:44,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:43:44,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:43:44,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:43:44,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:43:44,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:43:44,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:43:44,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:43:44,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:43:44,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:43:44,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:43:44,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:43:44,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:43:44,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:43:44,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:43:44,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:43:44,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:43:44,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:43:44,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:43:44,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:43:44,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:43:44,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:43:44,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:43:44,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:43:44,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:43:44,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:43:44,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:43:44,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:43:44,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:43:44,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 16:43:44,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:43:44,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:43:44,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:43:44,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:43:44,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:43:44,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:43:44,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:43:44,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:43:44,919 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:43:44,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:43:44,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:43:44,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:43:44,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:43:44,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:43:44,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:43:44,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:43:44,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:43:44,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 16:43:44,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 16:43:44,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:43:44,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:43:44,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:43:44,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:43:44,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:43:44,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:43:44,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:43:44,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:43:44,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:43:44,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:43:44,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:43:44,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 16:43:44,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 16:43:44,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:43:44,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:43:44,926 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:43:44,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:43:44,926 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 16:43:44,926 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_290c279e-f95c-42fe-a975-46fd93c6f289/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2022-11-25 16:43:45,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:43:45,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:43:45,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:43:45,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:43:45,362 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:43:45,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-tiling/mbpr3.c [2022-11-25 16:43:48,682 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:43:48,938 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:43:48,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/sv-benchmarks/c/array-tiling/mbpr3.c [2022-11-25 16:43:48,946 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data/720e19149/b3c3cbbec1ff4b8e84006c746f1f35b6/FLAG815c782f7 [2022-11-25 16:43:48,967 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/data/720e19149/b3c3cbbec1ff4b8e84006c746f1f35b6 [2022-11-25 16:43:48,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:43:48,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:43:48,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:43:48,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:43:48,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:43:48,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:43:48" (1/1) ... [2022-11-25 16:43:48,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af9b3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:48, skipping insertion in model container [2022-11-25 16:43:48,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:43:48" (1/1) ... [2022-11-25 16:43:48,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:43:49,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:43:49,233 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_290c279e-f95c-42fe-a975-46fd93c6f289/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-11-25 16:43:49,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:43:49,297 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:43:49,324 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_290c279e-f95c-42fe-a975-46fd93c6f289/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-11-25 16:43:49,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:43:49,365 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:43:49,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49 WrapperNode [2022-11-25 16:43:49,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:43:49,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:43:49,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:43:49,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:43:49,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,422 INFO L138 Inliner]: procedures = 17, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2022-11-25 16:43:49,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:43:49,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:43:49,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:43:49,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:43:49,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:43:49,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:43:49,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:43:49,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:43:49,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (1/1) ... [2022-11-25 16:43:49,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:43:49,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:49,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:43:49,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:43:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:43:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 16:43:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:43:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 16:43:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:43:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:43:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 16:43:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:43:49,685 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:43:49,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:43:50,322 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:43:50,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:43:50,328 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 16:43:50,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:43:50 BoogieIcfgContainer [2022-11-25 16:43:50,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:43:50,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:43:50,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:43:50,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:43:50,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:43:48" (1/3) ... [2022-11-25 16:43:50,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2806fe5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:43:50, skipping insertion in model container [2022-11-25 16:43:50,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:43:49" (2/3) ... [2022-11-25 16:43:50,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2806fe5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:43:50, skipping insertion in model container [2022-11-25 16:43:50,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:43:50" (3/3) ... [2022-11-25 16:43:50,340 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2022-11-25 16:43:50,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:43:50,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:43:50,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:43:50,418 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;@63c484a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:43:50,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:43:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 16:43:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 16:43:50,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:50,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:50,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:50,437 INFO L85 PathProgramCache]: Analyzing trace with hash -565609025, now seen corresponding path program 1 times [2022-11-25 16:43:50,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:43:50,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193159153] [2022-11-25 16:43:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:50,451 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 16:43:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:43:50,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:50,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:50,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 16:43:50,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:50,605 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 16:43:50,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:50,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:43:50,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193159153] [2022-11-25 16:43:50,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193159153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:50,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:50,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:50,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031852107] [2022-11-25 16:43:50,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:50,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:43:50,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:43:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:43:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:43:50,651 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:50,687 INFO L93 Difference]: Finished difference Result 63 states and 90 transitions. [2022-11-25 16:43:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:43:50,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 16:43:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:50,703 INFO L225 Difference]: With dead ends: 63 [2022-11-25 16:43:50,704 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 16:43:50,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 16:43:50,715 INFO L413 NwaCegarLoop]: 43 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, 43 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 16:43:50,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:43:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 16:43:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-25 16:43:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 16:43:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-25 16:43:50,759 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2022-11-25 16:43:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:50,759 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-25 16:43:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-25 16:43:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 16:43:50,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:50,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:50,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:50,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:50,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:50,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1539779609, now seen corresponding path program 1 times [2022-11-25 16:43:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:43:50,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457252389] [2022-11-25 16:43:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:50,984 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 16:43:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:43:50,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:50,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:51,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:43:51,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:51,927 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 16:43:51,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:51,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:43:51,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457252389] [2022-11-25 16:43:51,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457252389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:51,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:51,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:43:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518787505] [2022-11-25 16:43:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:43:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:43:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:43:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:51,933 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:53,003 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2022-11-25 16:43:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:43:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 16:43:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:53,012 INFO L225 Difference]: With dead ends: 60 [2022-11-25 16:43:53,012 INFO L226 Difference]: Without dead ends: 41 [2022-11-25 16:43:53,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:53,014 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 57 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:53,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 23 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 16:43:53,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-25 16:43:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2022-11-25 16:43:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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 16:43:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-25 16:43:53,035 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 17 [2022-11-25 16:43:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:53,036 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-25 16:43:53,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 16:43:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-25 16:43:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 16:43:53,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:53,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:53,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2048665896, now seen corresponding path program 1 times [2022-11-25 16:43:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:43:53,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613486841] [2022-11-25 16:43:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:53,258 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 16:43:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:43:53,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:53,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:43:53,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:53,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:53,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:43:53,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613486841] [2022-11-25 16:43:53,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613486841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:53,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:53,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:43:53,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590314721] [2022-11-25 16:43:53,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:53,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:53,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:43:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:53,651 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 16:43:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:53,692 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-25 16:43:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-25 16:43:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:53,695 INFO L225 Difference]: With dead ends: 45 [2022-11-25 16:43:53,696 INFO L226 Difference]: Without dead ends: 32 [2022-11-25 16:43:53,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 16:43:53,698 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:53,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:43:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-25 16:43:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-25 16:43:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 16:43:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-25 16:43:53,719 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 29 [2022-11-25 16:43:53,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:53,720 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-25 16:43:53,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 16:43:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-25 16:43:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 16:43:53,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:53,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:53,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1853274390, now seen corresponding path program 1 times [2022-11-25 16:43:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:43:53,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416357879] [2022-11-25 16:43:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:53,937 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 16:43:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:43:53,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:53,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:54,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:43:54,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:43:54,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:54,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:43:54,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416357879] [2022-11-25 16:43:54,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416357879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:54,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:54,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:43:54,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375680350] [2022-11-25 16:43:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:54,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:43:54,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:43:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:43:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:43:54,123 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 16:43:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:54,171 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-11-25 16:43:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:43:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-25 16:43:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:54,173 INFO L225 Difference]: With dead ends: 42 [2022-11-25 16:43:54,173 INFO L226 Difference]: Without dead ends: 40 [2022-11-25 16:43:54,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:54,175 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:54,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:43:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-25 16:43:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-11-25 16:43:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-11-25 16:43:54,186 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2022-11-25 16:43:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:54,186 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-11-25 16:43:54,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 16:43:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-11-25 16:43:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 16:43:54,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:54,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:54,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:54,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:54,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:54,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1853333972, now seen corresponding path program 1 times [2022-11-25 16:43:54,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:43:54,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432100043] [2022-11-25 16:43:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:54,405 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 16:43:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:43:54,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:54,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:43:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:54,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 16:43:54,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:54,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 16:43:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:43:54,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:43:54,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:43:54,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-25 16:43:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:43:54,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-11-25 16:43:55,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-25 16:43:55,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:43:55,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-11-25 16:43:55,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-25 16:43:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:55,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:04,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-11-25 16:44:04,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1090 treesize of output 1074 [2022-11-25 16:44:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:07,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:44:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432100043] [2022-11-25 16:44:07,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432100043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:07,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:07,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2022-11-25 16:44:07,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364459859] [2022-11-25 16:44:07,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:07,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 16:44:07,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:44:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 16:44:07,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=182, Unknown=3, NotChecked=0, Total=240 [2022-11-25 16:44:07,569 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 16:44:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:44:11,071 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2022-11-25 16:44:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 16:44:11,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 29 [2022-11-25 16:44:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:44:11,075 INFO L225 Difference]: With dead ends: 171 [2022-11-25 16:44:11,075 INFO L226 Difference]: Without dead ends: 144 [2022-11-25 16:44:11,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=277, Invalid=712, Unknown=3, NotChecked=0, Total=992 [2022-11-25 16:44:11,077 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 285 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:44:11,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 142 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 16:44:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-25 16:44:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 56. [2022-11-25 16:44:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2022-11-25 16:44:11,095 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 29 [2022-11-25 16:44:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:44:11,095 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2022-11-25 16:44:11,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 16:44:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2022-11-25 16:44:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 16:44:11,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:44:11,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:11,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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)] Ended with exit code 0 [2022-11-25 16:44:11,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:11,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:44:11,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:11,310 INFO L85 PathProgramCache]: Analyzing trace with hash -166695065, now seen corresponding path program 1 times [2022-11-25 16:44:11,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:44:11,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092352666] [2022-11-25 16:44:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:11,311 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 16:44:11,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:44:11,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:11,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 16:44:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:11,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 16:44:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:11,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:44:11,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-25 16:44:11,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:11,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2022-11-25 16:44:11,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-25 16:44:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:44:11,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:18,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-25 16:44:18,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 258 [2022-11-25 16:44:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:44:18,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:44:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092352666] [2022-11-25 16:44:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092352666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:18,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:18,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2022-11-25 16:44:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560198044] [2022-11-25 16:44:18,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 16:44:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:44:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 16:44:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=185, Unknown=2, NotChecked=0, Total=240 [2022-11-25 16:44:18,338 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 16:44:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:44:19,676 INFO L93 Difference]: Finished difference Result 133 states and 156 transitions. [2022-11-25 16:44:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:44:19,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 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 35 [2022-11-25 16:44:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:44:19,679 INFO L225 Difference]: With dead ends: 133 [2022-11-25 16:44:19,679 INFO L226 Difference]: Without dead ends: 91 [2022-11-25 16:44:19,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=163, Invalid=435, Unknown=2, NotChecked=0, Total=600 [2022-11-25 16:44:19,680 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 166 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:44:19,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 102 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 16:44:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-25 16:44:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 51. [2022-11-25 16:44:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 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 16:44:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-25 16:44:19,705 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 35 [2022-11-25 16:44:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:44:19,708 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-25 16:44:19,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 16:44:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-25 16:44:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 16:44:19,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:44:19,716 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:19,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:19,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:19,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:44:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1674688058, now seen corresponding path program 2 times [2022-11-25 16:44:19,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:44:19,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502088495] [2022-11-25 16:44:19,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:44:19,932 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 16:44:19,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:44:19,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:19,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:20,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:44:20,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:20,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:44:20,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 16:44:21,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 16:44:23,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:44:23,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502088495] [2022-11-25 16:44:23,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502088495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:23,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:23,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-25 16:44:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160042150] [2022-11-25 16:44:23,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:23,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:44:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:44:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:44:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:44:23,634 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:44:27,492 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2022-11-25 16:44:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:44:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-25 16:44:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:44:27,498 INFO L225 Difference]: With dead ends: 154 [2022-11-25 16:44:27,498 INFO L226 Difference]: Without dead ends: 116 [2022-11-25 16:44:27,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:44:27,499 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 144 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:44:27,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 68 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 16:44:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-25 16:44:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 71. [2022-11-25 16:44:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 70 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 16:44:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2022-11-25 16:44:27,524 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 37 [2022-11-25 16:44:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:44:27,525 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2022-11-25 16:44:27,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2022-11-25 16:44:27,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 16:44:27,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:44:27,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:27,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:27,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:44:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 693076666, now seen corresponding path program 2 times [2022-11-25 16:44:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:44:27,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840483608] [2022-11-25 16:44:27,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:44:27,736 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 16:44:27,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:44:27,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:27,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:27,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:44:27,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:27,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 16:44:27,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:27,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 16:44:28,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:28,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:44:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:44:28,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:28,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-25 16:44:28,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1074 treesize of output 1042 [2022-11-25 16:44:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:44:29,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:44:29,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840483608] [2022-11-25 16:44:29,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840483608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:29,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:29,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-25 16:44:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485125340] [2022-11-25 16:44:29,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:29,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:44:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:44:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:44:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:44:29,522 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 16:44:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:44:31,645 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2022-11-25 16:44:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 16:44:31,646 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2022-11-25 16:44:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:44:31,647 INFO L225 Difference]: With dead ends: 135 [2022-11-25 16:44:31,647 INFO L226 Difference]: Without dead ends: 133 [2022-11-25 16:44:31,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=331, Invalid=1001, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 16:44:31,648 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 175 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:44:31,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 138 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 16:44:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-25 16:44:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2022-11-25 16:44:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1590909090909092) internal successors, (102), 88 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 16:44:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-11-25 16:44:31,691 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 41 [2022-11-25 16:44:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:44:31,694 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-11-25 16:44:31,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 16:44:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-11-25 16:44:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 16:44:31,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:44:31,700 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:31,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:31,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:31,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:44:31,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1442159932, now seen corresponding path program 3 times [2022-11-25 16:44:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:44:31,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259162482] [2022-11-25 16:44:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:44:31,916 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 16:44:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:44:31,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:31,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:32,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 16:44:32,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:32,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:44:32,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:44:34,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:44:38,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:44:38,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259162482] [2022-11-25 16:44:38,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259162482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:38,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:38,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-11-25 16:44:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895287911] [2022-11-25 16:44:38,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 16:44:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:44:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 16:44:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-25 16:44:38,719 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:44:48,090 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2022-11-25 16:44:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 16:44:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-25 16:44:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:44:48,094 INFO L225 Difference]: With dead ends: 237 [2022-11-25 16:44:48,094 INFO L226 Difference]: Without dead ends: 175 [2022-11-25 16:44:48,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2022-11-25 16:44:48,096 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 307 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:44:48,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 229 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 16:44:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-25 16:44:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 112. [2022-11-25 16:44:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 16:44:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2022-11-25 16:44:48,123 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 45 [2022-11-25 16:44:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:44:48,123 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2022-11-25 16:44:48,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2022-11-25 16:44:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 16:44:48,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:44:48,125 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:48,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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)] Forceful destruction successful, exit code 0 [2022-11-25 16:44:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:48,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:44:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -296121395, now seen corresponding path program 3 times [2022-11-25 16:44:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:44:48,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325024596] [2022-11-25 16:44:48,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:44:48,336 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 16:44:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:44:48,337 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:48,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:48,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 16:44:48,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:48,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 16:44:48,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:48,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 16:44:48,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:48,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:44:48,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:44:48,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-25 16:44:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 16:44:48,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:49,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-25 16:44:49,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 274 [2022-11-25 16:44:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 16:44:49,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:44:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325024596] [2022-11-25 16:44:49,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325024596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:49,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:49,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2022-11-25 16:44:49,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362751231] [2022-11-25 16:44:49,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 16:44:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:44:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 16:44:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:44:49,638 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:44:50,618 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2022-11-25 16:44:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:44:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-25 16:44:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:44:50,620 INFO L225 Difference]: With dead ends: 149 [2022-11-25 16:44:50,620 INFO L226 Difference]: Without dead ends: 139 [2022-11-25 16:44:50,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-11-25 16:44:50,622 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:44:50,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 163 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 16:44:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-25 16:44:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2022-11-25 16:44:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.135135135135135) internal successors, (126), 111 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 16:44:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2022-11-25 16:44:50,651 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 47 [2022-11-25 16:44:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:44:50,652 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2022-11-25 16:44:50,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2022-11-25 16:44:50,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 16:44:50,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:44:50,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:50,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:50,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:44:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -689148405, now seen corresponding path program 4 times [2022-11-25 16:44:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:44:50,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007452849] [2022-11-25 16:44:50,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:44:50,869 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 16:44:50,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:44:50,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:50,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:44:50,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:44:50,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:51,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:44:51,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:44:57,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:45:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:45:01,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:45:01,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007452849] [2022-11-25 16:45:01,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007452849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:45:01,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:45:01,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-25 16:45:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934881006] [2022-11-25 16:45:01,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:45:01,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 16:45:01,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:45:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 16:45:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:45:01,085 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 20 states, 20 states have (on average 4.4) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 16:45:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:45:05,308 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2022-11-25 16:45:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:45:05,313 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 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 47 [2022-11-25 16:45:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:45:05,314 INFO L225 Difference]: With dead ends: 151 [2022-11-25 16:45:05,314 INFO L226 Difference]: Without dead ends: 109 [2022-11-25 16:45:05,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2022-11-25 16:45:05,315 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 201 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 16:45:05,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 127 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 16:45:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-25 16:45:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2022-11-25 16:45:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 104 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 16:45:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2022-11-25 16:45:05,339 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 47 [2022-11-25 16:45:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:45:05,339 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2022-11-25 16:45:05,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 16:45:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2022-11-25 16:45:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 16:45:05,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:45:05,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:05,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:45:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:45:05,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:45:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1768711502, now seen corresponding path program 4 times [2022-11-25 16:45:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:45:05,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464851206] [2022-11-25 16:45:05,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:45:05,543 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 16:45:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:45:05,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:45:05,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290c279e-f95c-42fe-a975-46fd93c6f289/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 16:45:05,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:45:05,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:45:05,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-25 16:45:05,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:45:05,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 16:45:05,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-11-25 16:45:06,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:45:06,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2022-11-25 16:45:06,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:45:06,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:45:06,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-25 16:45:06,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2022-11-25 16:45:06,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:45:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2022-11-25 16:45:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:45:06,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:45:06,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-25 16:45:06,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2022-11-25 16:45:06,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:45:06,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2022-11-25 16:45:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:45:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:45:06,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-25 16:45:06,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-25 16:45:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:06,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:45:33,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2022-11-25 16:45:51,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161658234024910 treesize of output 161623874286542