./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array5_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array5_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c09b4fc8d3de11d5ddd4727c8f35e189f1128e81 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array5_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c09b4fc8d3de11d5ddd4727c8f35e189f1128e81 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:02:03,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:02:03,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:02:03,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:02:03,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:02:03,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:02:03,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:02:03,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:02:03,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:02:03,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:02:03,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:02:03,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:02:03,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:02:03,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:02:03,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:02:03,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:02:03,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:02:03,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:02:03,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:02:03,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:02:03,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:02:03,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:02:03,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:02:03,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:02:03,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:02:03,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:02:03,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:02:03,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:02:03,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:02:03,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:02:03,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:02:03,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:02:03,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:02:03,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:02:03,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:02:03,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:02:03,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:02:03,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:02:03,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:02:03,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:02:03,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:02:03,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:02:03,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:02:03,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:02:03,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:02:03,479 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:02:03,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:02:03,479 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:02:03,480 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:02:03,480 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:02:03,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:02:03,483 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:02:03,483 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:02:03,483 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:02:03,484 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:02:03,484 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:02:03,484 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:02:03,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:02:03,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:02:03,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:02:03,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:02:03,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:02:03,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:02:03,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:02:03,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:02:03,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:02:03,486 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:02:03,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:02:03,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:02:03,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:02:03,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:02:03,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:02:03,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:02:03,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:02:03,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:02:03,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:02:03,488 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:02:03,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:02:03,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:02:03,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:02:03,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:02:03,489 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c09b4fc8d3de11d5ddd4727c8f35e189f1128e81 [2021-10-16 02:02:03,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:02:03,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:02:03,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:02:03,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:02:03,796 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:02:03,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/array-patterns/array5_pattern.c [2021-10-16 02:02:03,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/9ff334a96/b24d01dd6e484f92a5598ddab1f4d2d8/FLAG1b0fbd3b3 [2021-10-16 02:02:04,327 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:02:04,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/sv-benchmarks/c/array-patterns/array5_pattern.c [2021-10-16 02:02:04,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/9ff334a96/b24d01dd6e484f92a5598ddab1f4d2d8/FLAG1b0fbd3b3 [2021-10-16 02:02:04,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/9ff334a96/b24d01dd6e484f92a5598ddab1f4d2d8 [2021-10-16 02:02:04,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:02:04,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:02:04,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:02:04,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:02:04,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:02:04,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:04,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c5621d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04, skipping insertion in model container [2021-10-16 02:02:04,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:04,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:02:04,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:02:04,933 WARN L228 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_cba2454e-839b-489c-bce7-ef6966348b55/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-10-16 02:02:04,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:04,962 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:02:04,973 WARN L228 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_cba2454e-839b-489c-bce7-ef6966348b55/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-10-16 02:02:04,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:04,997 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:02:04,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04 WrapperNode [2021-10-16 02:02:04,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:02:04,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:02:04,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:02:04,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:02:05,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:02:05,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:02:05,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:02:05,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:02:05,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:02:05,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:02:05,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:02:05,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:02:05,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (1/1) ... [2021-10-16 02:02:05,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:02:05,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:05,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:02:05,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:02:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:02:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:02:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:02:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:02:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:02:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:02:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:02:05,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:02:05,714 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-16 02:02:05,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:05 BoogieIcfgContainer [2021-10-16 02:02:05,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:02:05,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:02:05,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:02:05,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:02:05,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:02:04" (1/3) ... [2021-10-16 02:02:05,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31552f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:02:05, skipping insertion in model container [2021-10-16 02:02:05,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:04" (2/3) ... [2021-10-16 02:02:05,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31552f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:02:05, skipping insertion in model container [2021-10-16 02:02:05,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:05" (3/3) ... [2021-10-16 02:02:05,726 INFO L111 eAbstractionObserver]: Analyzing ICFG array5_pattern.c [2021-10-16 02:02:05,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:02:05,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:02:05,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:02:05,786 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:02:05,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:02:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:02:05,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:05,807 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:05,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash 994967500, now seen corresponding path program 1 times [2021-10-16 02:02:05,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:02:05,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345287566] [2021-10-16 02:02:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:05,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:02:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:05,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:02:05,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345287566] [2021-10-16 02:02:05,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345287566] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:05,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:05,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:02:05,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825901219] [2021-10-16 02:02:05,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:02:05,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:02:06,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:02:06,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:02:06,009 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:06,022 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-10-16 02:02:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:02:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-16 02:02:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:06,033 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:02:06,033 INFO L226 Difference]: Without dead ends: 9 [2021-10-16 02:02:06,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:02:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-16 02:02:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-16 02:02:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-16 02:02:06,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-10-16 02:02:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:06,068 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-16 02:02:06,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-16 02:02:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:02:06,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:06,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:06,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:02:06,070 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:06,071 INFO L82 PathProgramCache]: Analyzing trace with hash 744054611, now seen corresponding path program 1 times [2021-10-16 02:02:06,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:02:06,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661611984] [2021-10-16 02:02:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:06,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:02:06,097 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:02:06,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157312212] [2021-10-16 02:02:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:06,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:06,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:06,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:06,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:02:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:06,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:02:06,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:06,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:06,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:02:06,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661611984] [2021-10-16 02:02:06,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:02:06,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157312212] [2021-10-16 02:02:06,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157312212] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:06,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:06,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:02:06,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106397590] [2021-10-16 02:02:06,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:02:06,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:02:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:02:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:02:06,428 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:06,470 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-16 02:02:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:02:06,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:02:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:06,471 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:02:06,471 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:02:06,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:02:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:02:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:02:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-16 02:02:06,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 8 [2021-10-16 02:02:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:06,485 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-16 02:02:06,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-16 02:02:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:02:06,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:06,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:06,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:06,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:06,710 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:06,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1590694069, now seen corresponding path program 1 times [2021-10-16 02:02:06,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:02:06,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912343223] [2021-10-16 02:02:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:06,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:02:06,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:02:06,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86584608] [2021-10-16 02:02:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:06,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:06,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:06,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:02:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:06,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:02:06,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:06,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:07,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:02:07,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912343223] [2021-10-16 02:02:07,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:02:07,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86584608] [2021-10-16 02:02:07,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86584608] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:07,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:07,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:02:07,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072725498] [2021-10-16 02:02:07,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:02:07,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:02:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:02:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:02:07,030 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:07,081 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-10-16 02:02:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:02:07,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 02:02:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:07,084 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:02:07,084 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:02:07,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:02:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:02:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:02:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-16 02:02:07,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2021-10-16 02:02:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:07,089 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-16 02:02:07,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-16 02:02:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:02:07,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:07,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:07,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:07,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-16 02:02:07,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1387410374, now seen corresponding path program 1 times [2021-10-16 02:02:07,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:02:07,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980546168] [2021-10-16 02:02:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:07,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:02:07,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:02:07,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556920304] [2021-10-16 02:02:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:07,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:07,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:07,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:07,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:02:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:07,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-16 02:02:07,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:07,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 103 treesize of output 101 [2021-10-16 02:02:07,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2021-10-16 02:02:07,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 53 [2021-10-16 02:02:08,115 INFO L354 Elim1Store]: treesize reduction 82, result has 7.9 percent of original size [2021-10-16 02:02:08,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 34 [2021-10-16 02:02:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:08,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:08,372 INFO L354 Elim1Store]: treesize reduction 78, result has 50.3 percent of original size [2021-10-16 02:02:08,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 121 [2021-10-16 02:02:08,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 6 [2021-10-16 02:02:08,921 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-10-16 02:02:08,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2021-10-16 02:02:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:02:09,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-10-16 02:02:09,126 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-10-16 02:02:09,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2021-10-16 02:02:10,186 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:10,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 162 [2021-10-16 02:02:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:11,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:02:11,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980546168] [2021-10-16 02:02:11,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:02:11,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556920304] [2021-10-16 02:02:11,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556920304] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:11,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534847272] [2021-10-16 02:02:11,113 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-16 02:02:11,113 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:02:11,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:02:11,123 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:02:11,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:02:11,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,158 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:02:11,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-16 02:02:11,159 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:02:11,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:02:11,161 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:02:11,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:02:11,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-10-16 02:02:11,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:02:11,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:02:11,201 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:02:11,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:02:11,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:02:11,223 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:02:11,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:02:11,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:02:11,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:02:11,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:02:11,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:02:11,476 INFO L354 Elim1Store]: treesize reduction 244, result has 7.9 percent of original size [2021-10-16 02:02:11,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 87 treesize of output 86 [2021-10-16 02:02:11,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-16 02:02:11,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-16 02:02:11,485 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:02:11,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:02:11,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:02:11,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:02:11,494 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-16 02:02:11,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:02:11,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:11,554 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size [2021-10-16 02:02:11,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-10-16 02:02:11,559 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:02:11,560 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:925, output treesize:204 [2021-10-16 02:02:11,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:11,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:11,782 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for v_prenex_1 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-16 02:02:11,786 INFO L168 Benchmark]: Toolchain (without parser) took 7051.16 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 50.6 MB in the beginning and 59.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:02:11,787 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:02:11,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.74 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.3 MB in the beginning and 80.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:02:11,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.05 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:02:11,789 INFO L168 Benchmark]: Boogie Preprocessor took 59.45 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 77.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:02:11,790 INFO L168 Benchmark]: RCFGBuilder took 588.96 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 59.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:02:11,790 INFO L168 Benchmark]: TraceAbstraction took 6065.84 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 59.4 MB in the end (delta: -990.3 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:02:11,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.74 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.3 MB in the beginning and 80.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.05 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.45 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 77.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 588.96 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 59.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6065.84 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 59.4 MB in the end (delta: -990.3 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for v_prenex_1 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for v_prenex_1: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:02:11,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:02:14,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:02:14,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:02:14,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:02:14,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:02:14,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:02:14,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:02:14,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:02:14,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:02:14,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:02:14,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:02:14,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:02:14,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:02:14,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:02:14,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:02:14,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:02:14,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:02:14,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:02:14,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:02:14,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:02:14,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:02:14,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:02:14,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:02:14,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:02:14,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:02:14,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:02:14,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:02:14,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:02:14,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:02:14,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:02:14,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:02:14,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:02:14,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:02:14,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:02:14,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:02:14,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:02:14,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:02:14,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:02:14,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:02:14,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:02:14,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:02:14,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:02:14,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:02:14,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:02:14,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:02:14,418 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:02:14,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:02:14,419 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:02:14,419 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:02:14,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:02:14,420 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:02:14,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:02:14,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:02:14,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:02:14,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:02:14,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:02:14,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:02:14,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:02:14,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:02:14,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:02:14,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:02:14,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:02:14,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:02:14,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:02:14,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:02:14,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:02:14,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:02:14,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:02:14,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:02:14,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:02:14,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:02:14,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:02:14,425 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:02:14,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:14,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:02:14,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:02:14,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:02:14,426 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c09b4fc8d3de11d5ddd4727c8f35e189f1128e81 [2021-10-16 02:02:14,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:02:14,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:02:14,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:02:14,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:02:14,909 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:02:14,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/array-patterns/array5_pattern.c [2021-10-16 02:02:14,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/78bb01d5b/81c83b254dbc41aa80108d3751231c6b/FLAG5c4bb57c9 [2021-10-16 02:02:15,644 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:02:15,646 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/sv-benchmarks/c/array-patterns/array5_pattern.c [2021-10-16 02:02:15,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/78bb01d5b/81c83b254dbc41aa80108d3751231c6b/FLAG5c4bb57c9 [2021-10-16 02:02:15,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/data/78bb01d5b/81c83b254dbc41aa80108d3751231c6b [2021-10-16 02:02:15,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:02:15,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:02:15,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:02:15,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:02:15,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:02:15,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:02:15" (1/1) ... [2021-10-16 02:02:15,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f8057b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:15, skipping insertion in model container [2021-10-16 02:02:15,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:02:15" (1/1) ... [2021-10-16 02:02:15,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:02:15,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:02:16,126 WARN L228 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_cba2454e-839b-489c-bce7-ef6966348b55/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-10-16 02:02:16,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:16,162 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:02:16,195 WARN L228 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_cba2454e-839b-489c-bce7-ef6966348b55/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2021-10-16 02:02:16,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:16,250 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:02:16,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16 WrapperNode [2021-10-16 02:02:16,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:02:16,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:02:16,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:02:16,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:02:16,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:02:16,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:02:16,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:02:16,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:02:16,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:02:16,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:02:16,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:02:16,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:02:16,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (1/1) ... [2021-10-16 02:02:16,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:02:16,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:16,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:02:16,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:02:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:02:16,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:02:16,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:02:16,792 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-16 02:02:16,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:16 BoogieIcfgContainer [2021-10-16 02:02:16,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:02:16,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:02:16,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:02:16,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:02:16,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:02:15" (1/3) ... [2021-10-16 02:02:16,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39352829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:02:16, skipping insertion in model container [2021-10-16 02:02:16,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:16" (2/3) ... [2021-10-16 02:02:16,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39352829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:02:16, skipping insertion in model container [2021-10-16 02:02:16,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:16" (3/3) ... [2021-10-16 02:02:16,821 INFO L111 eAbstractionObserver]: Analyzing ICFG array5_pattern.c [2021-10-16 02:02:16,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:02:16,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:02:16,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:02:16,886 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:02:16,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:02:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:02:16,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:16,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:16,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:16,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1062125579, now seen corresponding path program 1 times [2021-10-16 02:02:16,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:16,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127242712] [2021-10-16 02:02:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:16,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:16,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:16,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:16,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:02:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:02:17,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:17,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:17,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:17,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127242712] [2021-10-16 02:02:17,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127242712] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:17,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:17,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:02:17,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864555273] [2021-10-16 02:02:17,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:02:17,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:02:17,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:02:17,262 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:17,277 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2021-10-16 02:02:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:02:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-10-16 02:02:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:17,286 INFO L225 Difference]: With dead ends: 45 [2021-10-16 02:02:17,286 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:02:17,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:02:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:02:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 02:02:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-16 02:02:17,317 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2021-10-16 02:02:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:17,318 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-16 02:02:17,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-16 02:02:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:02:17,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:17,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:17,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:17,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:17,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash 232262249, now seen corresponding path program 1 times [2021-10-16 02:02:17,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:17,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908240212] [2021-10-16 02:02:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:17,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:17,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:17,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:17,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:02:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:02:17,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:17,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:17,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:17,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908240212] [2021-10-16 02:02:17,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908240212] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:17,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:17,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:02:17,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141083818] [2021-10-16 02:02:17,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:02:17,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:02:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:02:17,901 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:17,939 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-10-16 02:02:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:02:17,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2021-10-16 02:02:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:17,941 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:02:17,942 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 02:02:17,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:02:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 02:02:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-16 02:02:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-16 02:02:17,948 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2021-10-16 02:02:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:17,949 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-16 02:02:17,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-16 02:02:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:02:17,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:17,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:17,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:18,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:18,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:18,165 INFO L82 PathProgramCache]: Analyzing trace with hash -81043925, now seen corresponding path program 1 times [2021-10-16 02:02:18,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:18,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599573043] [2021-10-16 02:02:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:18,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:18,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:18,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:18,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:02:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:02:18,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:02:18,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:02:18,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:18,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599573043] [2021-10-16 02:02:18,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599573043] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:18,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:18,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:02:18,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134146885] [2021-10-16 02:02:18,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:02:18,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:18,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:02:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:02:18,853 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:19,260 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2021-10-16 02:02:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:02:19,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 02:02:19,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:19,263 INFO L225 Difference]: With dead ends: 41 [2021-10-16 02:02:19,263 INFO L226 Difference]: Without dead ends: 26 [2021-10-16 02:02:19,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 362.3ms TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:02:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-16 02:02:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2021-10-16 02:02:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-16 02:02:19,269 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 19 [2021-10-16 02:02:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:19,270 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-16 02:02:19,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-16 02:02:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:02:19,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:19,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:19,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:19,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:19,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1598955785, now seen corresponding path program 1 times [2021-10-16 02:02:19,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:19,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497432868] [2021-10-16 02:02:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:19,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:19,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:19,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:19,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:02:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:19,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:02:19,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:19,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 9 [2021-10-16 02:02:20,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-10-16 02:02:21,367 INFO L354 Elim1Store]: treesize reduction 58, result has 15.9 percent of original size [2021-10-16 02:02:21,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 38 [2021-10-16 02:02:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:21,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:23,085 INFO L354 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2021-10-16 02:02:23,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 268 treesize of output 228 [2021-10-16 02:02:23,236 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:23,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 224 [2021-10-16 02:02:23,568 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:23,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-10-16 02:02:26,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:02:26,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 329 treesize of output 346 [2021-10-16 02:04:31,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 39 [2021-10-16 02:04:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:31,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:31,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497432868] [2021-10-16 02:04:31,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497432868] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:31,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452315510] [2021-10-16 02:04:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:31,908 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:31,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:31,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:31,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:04:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:32,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:04:32,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:32,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 9 [2021-10-16 02:04:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-10-16 02:04:33,408 INFO L354 Elim1Store]: treesize reduction 58, result has 15.9 percent of original size [2021-10-16 02:04:33,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 38 [2021-10-16 02:04:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:33,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:34,545 INFO L354 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2021-10-16 02:04:34,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 268 treesize of output 228 [2021-10-16 02:04:34,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:34,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 224 [2021-10-16 02:04:38,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 7 [2021-10-16 02:04:38,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:04:38,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2021-10-16 02:04:42,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:42,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 385 treesize of output 391 [2021-10-16 02:06:41,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 39 [2021-10-16 02:06:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:41,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452315510] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:41,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317443574] [2021-10-16 02:06:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:41,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:41,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:41,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:06:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:41,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:06:41,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:42,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 9 [2021-10-16 02:06:43,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2021-10-16 02:06:43,398 INFO L354 Elim1Store]: treesize reduction 58, result has 15.9 percent of original size [2021-10-16 02:06:43,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 38 [2021-10-16 02:06:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:43,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:45,817 INFO L354 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2021-10-16 02:06:45,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 268 treesize of output 228 [2021-10-16 02:06:45,947 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:06:45,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 224 [2021-10-16 02:06:49,449 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:06:49,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2021-10-16 02:06:52,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 7 [2021-10-16 02:06:54,317 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:06:54,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 385 treesize of output 391 [2021-10-16 02:08:35,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 44 [2021-10-16 02:08:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:35,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317443574] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:35,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:08:35,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14, 13, 14, 13] total 37 [2021-10-16 02:08:35,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811398171] [2021-10-16 02:08:35,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-16 02:08:35,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-16 02:08:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2021-10-16 02:08:35,871 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:00,035 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse14 ((_ sign_extend 32) (_ bv0 32)))) (let ((.cse0 (bvadd .cse14 ((_ sign_extend 32) (_ bv1 32)) ((_ sign_extend 32) (_ bv4294967295 32))))) (and (= .cse0 c_ULTIMATE.start_main_~sum~0) (= .cse0 (bvadd ((_ sign_extend 32) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0.base|) |c_ULTIMATE.start_main_~#array1~0.offset|)) c_ULTIMATE.start_main_~sum~0 ((_ sign_extend 32) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0.base|) |c_ULTIMATE.start_main_~#array2~0.offset|)))) (forall ((v_ULTIMATE.start_main_~index~0_16 (_ BitVec 16))) (let ((.cse1 ((_ sign_extend 16) v_ULTIMATE.start_main_~index~0_16))) (or (not (= (_ bv0 32) (bvsrem .cse1 (_ bv2 32)))) (let ((.cse2 (bvmul (_ bv4 32) .cse1))) (and (= (_ bv0 32) .cse2) (let ((.cse4 (bvmul c_ULTIMATE.start_main_~num~0 c_ULTIMATE.start_main_~count~0))) (let ((.cse3 (bvadd ((_ sign_extend 32) (_ bv0 32)) ((_ sign_extend 32) (_ bv1 32)) ((_ sign_extend 32) (_ bv4294967295 32)))) (.cse5 ((_ sign_extend 32) .cse4)) (.cse6 (= |c_ULTIMATE.start_main_~#array1~0.base| |c_ULTIMATE.start_main_~#array2~0.base|)) (.cse7 (= |c_ULTIMATE.start_main_~#array1~0.offset| (bvadd |c_ULTIMATE.start_main_~#array2~0.offset| .cse2)))) (or (and (= .cse3 (bvadd c_ULTIMATE.start_main_~sum~0 ((_ sign_extend 32) (bvmul c_ULTIMATE.start_main_~num~0 .cse4)) .cse5)) (or (not .cse6) (not .cse7))) (and (= .cse3 (bvadd c_ULTIMATE.start_main_~sum~0 (bvmul (_ bv2 64) .cse5))) .cse6 .cse7)))))) (not (bvsge .cse1 (_ bv0 32))) (not (bvslt ((_ sign_extend 32) .cse1) c_~ARR_SIZE~0))))) (or (forall ((v_ULTIMATE.start_main_~index~0_12 (_ BitVec 16))) (let ((.cse13 ((_ sign_extend 16) v_ULTIMATE.start_main_~index~0_12))) (or (let ((.cse8 (bvmul (_ bv4 32) .cse13))) (and (= (_ bv0 32) .cse8) (let ((.cse9 (= |c_ULTIMATE.start_main_~#array1~0.base| |c_ULTIMATE.start_main_~#array2~0.base|)) (.cse11 (bvadd ((_ sign_extend 32) (_ bv0 32)) ((_ sign_extend 32) (_ bv1 32)) ((_ sign_extend 32) (_ bv4294967295 32)))) (.cse12 ((_ sign_extend 32) c_ULTIMATE.start_main_~num~0)) (.cse10 (= |c_ULTIMATE.start_main_~#array1~0.offset| (bvadd |c_ULTIMATE.start_main_~#array2~0.offset| .cse8)))) (or (and (or (not .cse9) (not .cse10)) (= .cse11 (bvadd c_ULTIMATE.start_main_~sum~0 ((_ sign_extend 32) (bvmul c_ULTIMATE.start_main_~num~0 c_ULTIMATE.start_main_~num~0)) .cse12))) (and .cse9 (= .cse11 (bvadd c_ULTIMATE.start_main_~sum~0 (bvmul (_ bv2 64) .cse12))) .cse10))))) (not (bvsge .cse13 (_ bv0 32))) (not (bvslt ((_ sign_extend 32) .cse13) c_~ARR_SIZE~0))))) (bvslt ((_ sign_extend 32) c_ULTIMATE.start_main_~count~0) c_~ARR_SIZE~0)) (bvsgt c_~ARR_SIZE~0 .cse14) (let ((.cse20 ((_ sign_extend 16) c_ULTIMATE.start_main_~index~0))) (or (let ((.cse15 (bvmul (_ bv4 32) .cse20))) (and (= .cse15 (_ bv0 32)) (let ((.cse19 (bvmul c_ULTIMATE.start_main_~num~0 c_ULTIMATE.start_main_~count~0))) (let ((.cse16 ((_ sign_extend 32) .cse19)) (.cse18 (= |c_ULTIMATE.start_main_~#array1~0.base| |c_ULTIMATE.start_main_~#array2~0.base|)) (.cse17 (= (bvadd .cse15 |c_ULTIMATE.start_main_~#array2~0.offset|) |c_ULTIMATE.start_main_~#array1~0.offset|))) (or (and (= .cse0 (bvadd c_ULTIMATE.start_main_~sum~0 (bvmul (_ bv2 64) .cse16))) .cse17 .cse18) (and (= .cse0 (bvadd c_ULTIMATE.start_main_~sum~0 ((_ sign_extend 32) (bvmul c_ULTIMATE.start_main_~num~0 .cse19)) .cse16)) (or (not .cse18) (not .cse17)))))))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (not (= (bvsrem .cse20 (_ bv2 32)) (_ bv0 32))))) (forall ((v_ULTIMATE.start_main_~index~0_16 (_ BitVec 16))) (let ((.cse21 ((_ sign_extend 16) v_ULTIMATE.start_main_~index~0_16))) (or (not (= (_ bv0 32) (bvsrem .cse21 (_ bv2 32)))) (not (bvsge .cse21 (_ bv0 32))) (not (bvslt ((_ sign_extend 32) .cse21) c_~ARR_SIZE~0)) (let ((.cse26 (bvmul (_ bv4 32) .cse21))) (and (let ((.cse24 (bvadd ((_ sign_extend 32) (_ bv0 32)) ((_ sign_extend 32) (_ bv1 32)) ((_ sign_extend 32) (_ bv4294967295 32)))) (.cse25 ((_ sign_extend 32) c_ULTIMATE.start_main_~num~0)) (.cse22 (= |c_ULTIMATE.start_main_~#array1~0.base| |c_ULTIMATE.start_main_~#array2~0.base|)) (.cse23 (= |c_ULTIMATE.start_main_~#array1~0.offset| (bvadd |c_ULTIMATE.start_main_~#array2~0.offset| .cse26)))) (or (and .cse22 .cse23 (= .cse24 (bvadd c_ULTIMATE.start_main_~sum~0 (bvmul (_ bv2 64) .cse25)))) (and (= .cse24 (bvadd c_ULTIMATE.start_main_~sum~0 ((_ sign_extend 32) (bvmul c_ULTIMATE.start_main_~num~0 c_ULTIMATE.start_main_~num~0)) .cse25)) (or (not .cse22) (not .cse23))))) (= (_ bv0 32) .cse26)))))) (exists ((|v_ULTIMATE.start_main_#t~nondet7_6| (_ BitVec 16))) (= c_~ARR_SIZE~0 ((_ sign_extend 48) |v_ULTIMATE.start_main_#t~nondet7_6|)))))) is different from false [2021-10-16 02:09:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:39,068 INFO L93 Difference]: Finished difference Result 148 states and 188 transitions. [2021-10-16 02:09:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-16 02:09:39,071 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-16 02:09:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:39,073 INFO L225 Difference]: With dead ends: 148 [2021-10-16 02:09:39,073 INFO L226 Difference]: Without dead ends: 108 [2021-10-16 02:09:39,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 78 SyntacticMatches, 7 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 73559.0ms TimeCoverageRelationStatistics Valid=1604, Invalid=5881, Unknown=1, NotChecked=170, Total=7656 [2021-10-16 02:09:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-16 02:09:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 62. [2021-10-16 02:09:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2021-10-16 02:09:39,094 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 21 [2021-10-16 02:09:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:39,095 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2021-10-16 02:09:39,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2021-10-16 02:09:39,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:09:39,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:39,097 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:39,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-16 02:09:39,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:39,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:09:39,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:39,700 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:39,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1872038377, now seen corresponding path program 1 times [2021-10-16 02:09:39,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:39,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176958137] [2021-10-16 02:09:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:39,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:39,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:39,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:09:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:39,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:09:39,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:40,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:41,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:41,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176958137] [2021-10-16 02:09:41,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176958137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:41,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [259386875] [2021-10-16 02:09:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:41,009 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:09:41,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:09:41,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:09:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:41,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:41,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:42,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [259386875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:42,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390090178] [2021-10-16 02:09:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:42,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:09:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:09:42,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:09:42,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:09:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:42,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:09:42,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:42,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:43,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390090178] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:43,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:09:43,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11, 10, 9, 8] total 26 [2021-10-16 02:09:43,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140442620] [2021-10-16 02:09:43,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-16 02:09:43,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-16 02:09:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-10-16 02:09:43,232 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 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) [2021-10-16 02:09:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:46,427 INFO L93 Difference]: Finished difference Result 181 states and 232 transitions. [2021-10-16 02:09:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-16 02:09:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-16 02:09:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:46,429 INFO L225 Difference]: With dead ends: 181 [2021-10-16 02:09:46,429 INFO L226 Difference]: Without dead ends: 162 [2021-10-16 02:09:46,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2927.3ms TimeCoverageRelationStatistics Valid=535, Invalid=1271, Unknown=0, NotChecked=0, Total=1806 [2021-10-16 02:09:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-16 02:09:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 92. [2021-10-16 02:09:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2637362637362637) internal successors, (115), 91 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2021-10-16 02:09:46,473 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 23 [2021-10-16 02:09:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:46,473 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2021-10-16 02:09:46,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 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) [2021-10-16 02:09:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2021-10-16 02:09:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:09:46,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:46,476 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:46,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:46,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-16 02:09:46,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-16 02:09:47,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:09:47,090 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash 77623465, now seen corresponding path program 2 times [2021-10-16 02:09:47,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:47,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576968885] [2021-10-16 02:09:47,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:09:47,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:47,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:47,092 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:09:47,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:09:47,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:47,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 02:09:47,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:47,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 9 [2021-10-16 02:09:47,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-10-16 02:09:48,785 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-10-16 02:09:48,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 64 [2021-10-16 02:09:49,673 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-10-16 02:09:49,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 45 [2021-10-16 02:09:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:49,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:33,724 WARN L207 SmtUtils]: Spent 14.65 s on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-10-16 02:10:33,726 INFO L354 Elim1Store]: treesize reduction 335, result has 28.9 percent of original size [2021-10-16 02:10:33,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249396 treesize of output 70715 [2021-10-16 02:10:36,108 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:36,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70715 treesize of output 66617 [2021-10-16 02:10:36,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:36,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576968885] [2021-10-16 02:10:36,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:10:36,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407528974] [2021-10-16 02:10:36,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:10:36,286 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:10:36,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:10:36,294 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:10:36,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:10:37,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:10:37,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:10:37,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 02:10:37,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:37,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 11 [2021-10-16 02:10:38,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-10-16 02:10:39,543 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-10-16 02:10:39,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 64 [2021-10-16 02:10:42,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:10:42,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:10:42,179 INFO L354 Elim1Store]: treesize reduction 194, result has 17.4 percent of original size [2021-10-16 02:10:42,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 83 [2021-10-16 02:10:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:44,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:07,742 WARN L860 $PredicateComparison]: unable to prove that (or (bvslt ((_ sign_extend 32) (_ bv2 32)) c_~ARR_SIZE~0) (forall ((v_ULTIMATE.start_main_~index~0_25 (_ BitVec 16))) (let ((.cse0 ((_ sign_extend 16) v_ULTIMATE.start_main_~index~0_25))) (or (not (bvsge .cse0 (_ bv0 32))) (= (let ((.cse4 (bvmul .cse0 (_ bv4 32))) (.cse5 (bvmul c_ULTIMATE.start_main_~num~0 c_ULTIMATE.start_main_~count~0))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0.base|) (bvadd |c_ULTIMATE.start_main_~#array1~0.offset| .cse4) (bvmul c_ULTIMATE.start_main_~num~0 .cse5))))) (let ((.cse2 (store (select .cse3 |c_ULTIMATE.start_main_~#array2~0.base|) (bvadd |c_ULTIMATE.start_main_~#array2~0.offset| .cse4) .cse5))) (let ((.cse1 (select (store .cse3 |c_ULTIMATE.start_main_~#array2~0.base| .cse2) |c_ULTIMATE.start_main_~#array1~0.base|))) (bvadd c_ULTIMATE.start_main_~sum~0 ((_ sign_extend 32) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array1~0.offset|))) ((_ sign_extend 32) (select .cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array2~0.offset|))) ((_ sign_extend 32) (select .cse2 |c_ULTIMATE.start_main_~#array2~0.offset|)) ((_ sign_extend 32) (select .cse1 |c_ULTIMATE.start_main_~#array1~0.offset|))))))) (bvmul (_ bv3 64) ((_ sign_extend 32) (_ bv0 32)))) (not (= (bvsrem .cse0 (_ bv2 32)) (_ bv0 32))) (not (bvslt ((_ sign_extend 32) .cse0) c_~ARR_SIZE~0))))) (not (bvslt ((_ sign_extend 32) (_ bv1 32)) c_~ARR_SIZE~0))) is different from true [2021-10-16 02:11:20,547 WARN L207 SmtUtils]: Spent 7.43 s on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-10-16 02:11:20,547 INFO L354 Elim1Store]: treesize reduction 370, result has 21.4 percent of original size [2021-10-16 02:11:20,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 125236 treesize of output 35928 [2021-10-16 02:11:20,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:20,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35928 treesize of output 33880 [2021-10-16 02:11:20,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:11:20,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287644393] [2021-10-16 02:11:20,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:11:20,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:11:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:11:20,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:11:20,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:11:21,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:11:21,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:11:21,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 02:11:21,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:21,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 12 [2021-10-16 02:11:21,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-10-16 02:11:23,826 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-10-16 02:11:23,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 65 [2021-10-16 02:11:26,018 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-10-16 02:11:26,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 45 [2021-10-16 02:11:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:11:26,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:47,748 WARN L207 SmtUtils]: Spent 9.74 s on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-10-16 02:12:47,749 INFO L354 Elim1Store]: treesize reduction 335, result has 28.9 percent of original size [2021-10-16 02:12:47,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 246172 treesize of output 67491 [2021-10-16 02:12:48,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:48,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67491 treesize of output 63393 [2021-10-16 02:12:48,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:12:48,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:12:48,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:12:48,362 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:12:48,362 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:12:48,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:12:48,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:48,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:48,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:48,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba2454e-839b-489c-bce7-ef6966348b55/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:49,004 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:12:49,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:12:49 BoogieIcfgContainer [2021-10-16 02:12:49,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:12:49,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:12:49,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:12:49,024 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:12:49,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:16" (3/4) ... [2021-10-16 02:12:49,027 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:12:49,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:12:49,028 INFO L168 Benchmark]: Toolchain (without parser) took 633071.04 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 68.8 MB in the beginning and 38.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:49,028 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:49,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.21 ms. Allocated memory is still 86.0 MB. Free memory was 68.6 MB in the beginning and 68.0 MB in the end (delta: 639.2 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:49,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.77 ms. Allocated memory is still 86.0 MB. Free memory was 68.0 MB in the beginning and 66.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:49,029 INFO L168 Benchmark]: Boogie Preprocessor took 28.47 ms. Allocated memory is still 86.0 MB. Free memory was 66.3 MB in the beginning and 65.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:49,030 INFO L168 Benchmark]: RCFGBuilder took 468.44 ms. Allocated memory is still 86.0 MB. Free memory was 64.8 MB in the beginning and 53.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:49,030 INFO L168 Benchmark]: TraceAbstraction took 632226.84 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 52.4 MB in the beginning and 38.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 67.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:49,031 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 119.5 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:49,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.21 ms. Allocated memory is still 86.0 MB. Free memory was 68.6 MB in the beginning and 68.0 MB in the end (delta: 639.2 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.77 ms. Allocated memory is still 86.0 MB. Free memory was 68.0 MB in the beginning and 66.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.47 ms. Allocated memory is still 86.0 MB. Free memory was 66.3 MB in the beginning and 65.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 468.44 ms. Allocated memory is still 86.0 MB. Free memory was 64.8 MB in the beginning and 53.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 632226.84 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 52.4 MB in the beginning and 38.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 67.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.22 ms. Allocated memory is still 119.5 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 41]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L45] signed long long ARR_SIZE ; [L49] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L39] COND FALSE !(!cond) [L52] int array1[ARR_SIZE] ; [L53] int array2[ARR_SIZE] ; [L54] int count = 0, num = -1 ; [L55] signed long long sum = 0 ; [L56] int temp ; [L57] short index ; [L59] count=0 [L59] COND TRUE count