./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array1_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array1_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH --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 f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:48:37,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:48:37,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:48:37,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:48:37,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:48:37,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:48:37,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:48:37,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:48:37,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:48:37,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:48:37,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:48:37,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:48:37,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:48:37,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:48:37,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:48:37,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:48:37,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:48:37,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:48:37,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:48:37,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:48:37,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:48:37,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:48:37,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:48:37,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:48:37,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:48:37,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:48:37,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:48:37,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:48:37,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:48:37,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:48:37,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:48:37,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:48:37,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:48:37,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:48:37,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:48:37,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:48:37,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:48:37,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:48:37,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:48:38,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:48:38,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:48:38,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:48:38,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:48:38,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:48:38,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:48:38,037 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:48:38,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:48:38,037 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:48:38,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:48:38,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:48:38,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:48:38,039 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:48:38,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:48:38,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:48:38,040 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:48:38,040 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:48:38,041 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:48:38,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:48:38,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:48:38,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:48:38,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:48:38,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:48:38,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:48:38,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:48:38,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:48:38,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:48:38,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:48:38,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:48:38,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:48:38,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:48:38,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:48:38,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:48:38,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:48:38,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:48:38,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:48:38,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:48:38,048 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:48:38,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:48:38,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:48:38,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:48:38,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:48:38,049 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_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 [2021-11-03 03:48:38,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:48:38,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:48:38,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:48:38,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:48:38,423 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:48:38,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-03 03:48:38,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/a5a0e197a/ad04fc6685f8454e8d589d784dfaca2a/FLAGf0fbe9efd [2021-11-03 03:48:39,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:48:39,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-03 03:48:39,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/a5a0e197a/ad04fc6685f8454e8d589d784dfaca2a/FLAGf0fbe9efd [2021-11-03 03:48:39,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/a5a0e197a/ad04fc6685f8454e8d589d784dfaca2a [2021-11-03 03:48:39,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:48:39,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:48:39,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:39,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:48:39,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:48:39,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187f174a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39, skipping insertion in model container [2021-11-03 03:48:39,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:48:39,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:48:39,678 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_c84fda09-99da-4a4a-8d57-d158afdba37e/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-03 03:48:39,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:39,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:48:39,729 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_c84fda09-99da-4a4a-8d57-d158afdba37e/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-03 03:48:39,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:39,760 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:48:39,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39 WrapperNode [2021-11-03 03:48:39,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:39,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:48:39,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:48:39,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:48:39,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:48:39,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:48:39,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:48:39,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:48:39,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:48:39,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:48:39,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:48:39,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:48:39,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (1/1) ... [2021-11-03 03:48:39,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:48:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:39,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:48:39,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:48:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:48:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:48:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:48:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:48:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:48:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:48:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:48:40,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:48:40,386 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 03:48:40,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:40 BoogieIcfgContainer [2021-11-03 03:48:40,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:48:40,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:48:40,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:48:40,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:48:40,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:39" (1/3) ... [2021-11-03 03:48:40,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170a4075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:40, skipping insertion in model container [2021-11-03 03:48:40,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:39" (2/3) ... [2021-11-03 03:48:40,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170a4075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:40, skipping insertion in model container [2021-11-03 03:48:40,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:40" (3/3) ... [2021-11-03 03:48:40,400 INFO L111 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2021-11-03 03:48:40,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:48:40,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:48:40,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:48:40,478 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, mAutomataTypeConcurrency=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 [2021-11-03 03:48:40,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:48:40,497 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) [2021-11-03 03:48:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 03:48:40,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:40,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:40,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash -448716444, now seen corresponding path program 1 times [2021-11-03 03:48:40,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:40,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112559994] [2021-11-03 03:48:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:40,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:40,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:40,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112559994] [2021-11-03 03:48:40,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112559994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:40,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:40,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:48:40,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040327561] [2021-11-03 03:48:40,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:48:40,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:48:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:48:40,798 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) [2021-11-03 03:48:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:40,814 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-03 03:48:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:48:40,816 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 [2021-11-03 03:48:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:40,826 INFO L225 Difference]: With dead ends: 18 [2021-11-03 03:48:40,836 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 03:48:40,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:48:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 03:48:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 03:48:40,879 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) [2021-11-03 03:48:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-03 03:48:40,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-11-03 03:48:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:40,884 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-03 03:48:40,885 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) [2021-11-03 03:48:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-03 03:48:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:48:40,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:40,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:40,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:48:40,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1060705347, now seen corresponding path program 1 times [2021-11-03 03:48:40,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:40,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760771700] [2021-11-03 03:48:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:40,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:40,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:48:40,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311747025] [2021-11-03 03:48:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:40,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:40,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:48:40,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:48:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:41,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:48:41,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:41,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:41,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:41,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760771700] [2021-11-03 03:48:41,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:48:41,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311747025] [2021-11-03 03:48:41,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311747025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:41,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:41,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:48:41,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86046461] [2021-11-03 03:48:41,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:48:41,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:48:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:48:41,352 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) [2021-11-03 03:48:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:41,390 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-03 03:48:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:48:41,391 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 [2021-11-03 03:48:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:41,393 INFO L225 Difference]: With dead ends: 13 [2021-11-03 03:48:41,393 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 03:48:41,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:48:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 03:48:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 03:48:41,405 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) [2021-11-03 03:48:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-03 03:48:41,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 8 [2021-11-03 03:48:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:41,408 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-03 03:48:41,409 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) [2021-11-03 03:48:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-03 03:48:41,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:48:41,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:41,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:41,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:41,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:41,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1477539147, now seen corresponding path program 1 times [2021-11-03 03:48:41,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:41,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122258474] [2021-11-03 03:48:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:41,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:41,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:48:41,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538073377] [2021-11-03 03:48:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:41,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:41,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:41,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:48:41,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:48:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:41,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:48:41,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:41,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:41,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:41,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122258474] [2021-11-03 03:48:41,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:48:41,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538073377] [2021-11-03 03:48:41,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538073377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:41,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:41,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:48:41,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154601741] [2021-11-03 03:48:41,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:48:41,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:48:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:48:41,858 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) [2021-11-03 03:48:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:41,913 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-11-03 03:48:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:48:41,914 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 [2021-11-03 03:48:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:41,915 INFO L225 Difference]: With dead ends: 20 [2021-11-03 03:48:41,915 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 03:48:41,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:48:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 03:48:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 03:48:41,919 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) [2021-11-03 03:48:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-03 03:48:41,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2021-11-03 03:48:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:41,921 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-03 03:48:41,921 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) [2021-11-03 03:48:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-03 03:48:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:48:41,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:41,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:41,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:42,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:42,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:42,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1777370413, now seen corresponding path program 1 times [2021-11-03 03:48:42,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:42,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288051329] [2021-11-03 03:48:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:42,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:42,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:48:42,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493599523] [2021-11-03 03:48:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:42,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:42,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:42,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:48:42,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:48:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:42,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-03 03:48:42,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:42,382 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 [2021-11-03 03:48:42,549 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 42 treesize of output 25 [2021-11-03 03:48:42,910 INFO L354 Elim1Store]: treesize reduction 152, result has 4.4 percent of original size [2021-11-03 03:48:42,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 147 treesize of output 118 [2021-11-03 03:48:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:43,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 12 [2021-11-03 03:48:43,630 INFO L354 Elim1Store]: treesize reduction 87, result has 7.4 percent of original size [2021-11-03 03:48:43,630 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 54 treesize of output 33 [2021-11-03 03:48:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:43,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:44,849 INFO L354 Elim1Store]: treesize reduction 214, result has 30.7 percent of original size [2021-11-03 03:48:44,850 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 4 case distinctions, treesize of input 6939 treesize of output 2797 [2021-11-03 03:48:44,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:44,913 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 2797 treesize of output 2701 [2021-11-03 03:48:45,177 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-11-03 03:48:45,177 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 59 treesize of output 67 [2021-11-03 03:48:45,591 INFO L354 Elim1Store]: treesize reduction 28, result has 78.3 percent of original size [2021-11-03 03:48:45,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3916 treesize of output 3900 [2021-11-03 03:48:45,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:48:45,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288051329] [2021-11-03 03:48:45,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:48:45,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493599523] [2021-11-03 03:48:45,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 03:48:45,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [842350756] [2021-11-03 03:48:45,690 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 03:48:45,691 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:48:45,697 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:48:45,704 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:48:45,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:48:45,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:45,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 03:48:45,757 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:45,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:48:45,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:45,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 03:48:45,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-03 03:48:45,799 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1, |v_#length_22|], 55=[|v_#valid_35|]} [2021-11-03 03:48:45,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:45,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 20 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2021-11-03 03:48:45,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 03:48:45,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 03:48:45,908 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:45,922 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:45,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:45,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:45,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:45,924 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:45,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:46,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:46,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:46,078 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:46,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:46,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:46,095 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,139 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,253 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 03:48:46,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 58 [2021-11-03 03:48:46,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 03:48:46,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 03:48:46,262 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,278 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,285 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 03:48:46,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 03:48:46,291 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,291 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:925, output treesize:183 [2021-11-03 03:48:46,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,303 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:46,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 03:48:46,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:48:46,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-11-03 03:48:46,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:48:46,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:48:46,342 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-03 03:48:46,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,370 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:210, output treesize:197 [2021-11-03 03:48:46,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:46,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:46,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-03 03:48:46,589 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:46,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:48:46,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 467 [2021-11-03 03:48:46,598 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:46,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 422 [2021-11-03 03:48:46,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 526 [2021-11-03 03:48:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:48:46,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:48:46,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:48:46,675 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:46,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2021-11-03 03:48:46,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:48:46,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:48:46,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:46,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:46,859 INFO L180 QuantifierPusher]: treesize reduction 158, result has 75.0 percent of original size [2021-11-03 03:48:46,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 473 [2021-11-03 03:48:46,870 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:48:46,871 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:667, output treesize:473 [2021-11-03 03:48:46,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:46,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,014 INFO L180 QuantifierPusher]: treesize reduction 54, result has 68.8 percent of original size [2021-11-03 03:48:47,016 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:47,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:48:47,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 03:48:47,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:47,044 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-03 03:48:47,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-03 03:48:47,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:48:47,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:48:47,047 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,053 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 03:48:47,057 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,058 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:100 [2021-11-03 03:48:47,072 INFO L180 QuantifierPusher]: treesize reduction 55, result has 82.8 percent of original size [2021-11-03 03:48:47,077 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:47,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 03:48:47,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:47,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-03 03:48:47,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-11-03 03:48:47,158 INFO L354 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2021-11-03 03:48:47,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 58 [2021-11-03 03:48:47,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 03:48:47,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 03:48:47,162 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:47,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:47,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,190 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,247 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,259 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:47,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,262 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:47,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,275 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:48:47,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:48:47,289 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,304 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-03 03:48:47,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-03 03:48:47,309 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:48:47,309 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:977, output treesize:159 [2021-11-03 03:48:47,320 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.2 percent of original size [2021-11-03 03:48:47,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-03 03:48:47,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:47,336 INFO L185 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size 161 [2021-11-03 03:48:47,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:47,399 INFO L180 QuantifierPusher]: treesize reduction 54, result has 66.7 percent of original size [2021-11-03 03:48:47,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:48:47,413 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:48:49,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:48:49,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:49,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 03:48:49,387 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-03 03:48:49,387 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 03:48:49,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:48:49,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:49,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:49,626 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-03 03:48:49,628 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:48:49,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:48:49 BoogieIcfgContainer [2021-11-03 03:48:49,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:48:49,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:48:49,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:48:49,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:48:49,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:40" (3/4) ... [2021-11-03 03:48:49,650 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:48:49,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:48:49,651 INFO L168 Benchmark]: Toolchain (without parser) took 10210.75 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 99.0 MB in the beginning and 142.9 MB in the end (delta: -43.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:49,652 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:48:49,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.72 ms. Allocated memory is still 132.1 MB. Free memory was 98.7 MB in the beginning and 108.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:49,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.81 ms. Allocated memory is still 132.1 MB. Free memory was 108.4 MB in the beginning and 106.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:49,653 INFO L168 Benchmark]: Boogie Preprocessor took 30.14 ms. Allocated memory is still 132.1 MB. Free memory was 106.9 MB in the beginning and 105.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:49,654 INFO L168 Benchmark]: RCFGBuilder took 537.13 ms. Allocated memory is still 132.1 MB. Free memory was 105.8 MB in the beginning and 90.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:49,655 INFO L168 Benchmark]: TraceAbstraction took 9252.84 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 89.7 MB in the beginning and 142.9 MB in the end (delta: -53.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:48:49,655 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 195.0 MB. Free memory is still 142.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:48:49,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.72 ms. Allocated memory is still 132.1 MB. Free memory was 98.7 MB in the beginning and 108.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.81 ms. Allocated memory is still 132.1 MB. Free memory was 108.4 MB in the beginning and 106.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.14 ms. Allocated memory is still 132.1 MB. Free memory was 106.9 MB in the beginning and 105.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 537.13 ms. Allocated memory is still 132.1 MB. Free memory was 105.8 MB in the beginning and 90.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9252.84 ms. Allocated memory was 132.1 MB in the beginning and 195.0 MB in the end (delta: 62.9 MB). Free memory was 89.7 MB in the beginning and 142.9 MB in the end (delta: -53.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.52 ms. Allocated memory is still 195.0 MB. Free memory is still 142.9 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 30]: 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: [L34] signed long long ARR_SIZE ; [L38] ARR_SIZE = __VERIFIER_nondet_short() [L28] COND TRUE !cond [L41] int array1[ARR_SIZE] ; [L42] int array2[ARR_SIZE] ; [L43] int count = 0, num = -1 ; [L44] int temp ; [L45] short index ; [L46] signed long long sum = 0 ; [L48] count=0 [L48] COND TRUE count main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH 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 -> f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 [2021-11-03 03:48:53,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:48:53,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:48:53,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:48:53,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:48:53,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:48:53,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-03 03:48:53,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/ef0af42a2/5afea7524b7a4bd9a15e04c2a109d2a2/FLAG504f175cf [2021-11-03 03:48:54,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:48:54,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-03 03:48:54,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/ef0af42a2/5afea7524b7a4bd9a15e04c2a109d2a2/FLAG504f175cf [2021-11-03 03:48:54,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/data/ef0af42a2/5afea7524b7a4bd9a15e04c2a109d2a2 [2021-11-03 03:48:54,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:48:54,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:48:54,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:54,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:48:54,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:48:54,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d87ca16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54, skipping insertion in model container [2021-11-03 03:48:54,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:48:54,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:48:54,700 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_c84fda09-99da-4a4a-8d57-d158afdba37e/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-03 03:48:54,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:54,739 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:48:54,765 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_c84fda09-99da-4a4a-8d57-d158afdba37e/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-03 03:48:54,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:48:54,856 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:48:54,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54 WrapperNode [2021-11-03 03:48:54,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:48:54,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:48:54,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:48:54,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:48:54,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:48:54,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:48:54,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:48:54,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:48:54,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:54,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:55,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:55,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:48:55,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:48:55,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:48:55,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:48:55,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (1/1) ... [2021-11-03 03:48:55,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:48:55,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:55,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:48:55,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:48:55,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:48:55,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:48:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:48:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:48:55,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:48:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:48:55,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:48:55,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:48:55,551 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 03:48:55,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:55 BoogieIcfgContainer [2021-11-03 03:48:55,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:48:55,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:48:55,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:48:55,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:48:55,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:54" (1/3) ... [2021-11-03 03:48:55,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9de80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:55, skipping insertion in model container [2021-11-03 03:48:55,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:54" (2/3) ... [2021-11-03 03:48:55,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9de80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:55, skipping insertion in model container [2021-11-03 03:48:55,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:55" (3/3) ... [2021-11-03 03:48:55,563 INFO L111 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2021-11-03 03:48:55,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:48:55,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:48:55,633 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:48:55,641 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, mAutomataTypeConcurrency=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 [2021-11-03 03:48:55,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:48:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:48:55,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:55,686 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:55,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash 555623354, now seen corresponding path program 1 times [2021-11-03 03:48:55,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:55,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154045322] [2021-11-03 03:48:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:55,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:55,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:55,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:48:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:48:55,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:55,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:55,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:55,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154045322] [2021-11-03 03:48:55,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154045322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:55,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:55,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:48:55,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483040441] [2021-11-03 03:48:55,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:48:55,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:48:56,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:48:56,018 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-03 03:48:56,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:56,036 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2021-11-03 03:48:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:48:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 11 [2021-11-03 03:48:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:56,048 INFO L225 Difference]: With dead ends: 39 [2021-11-03 03:48:56,048 INFO L226 Difference]: Without dead ends: 17 [2021-11-03 03:48:56,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:48:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-03 03:48:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-03 03:48:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2021-11-03 03:48:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-03 03:48:56,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-11-03 03:48:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:56,089 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-03 03:48:56,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-03 03:48:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-03 03:48:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 03:48:56,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:56,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:56,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:56,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:56,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2030844390, now seen corresponding path program 1 times [2021-11-03 03:48:56,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:56,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027522409] [2021-11-03 03:48:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:56,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:56,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:56,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:56,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:48:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:56,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:48:56,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:56,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:56,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:56,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027522409] [2021-11-03 03:48:56,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027522409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:56,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:56,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:48:56,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852691848] [2021-11-03 03:48:56,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:48:56,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:48:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:48:56,774 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:56,839 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-03 03:48:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:48:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 03:48:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:56,842 INFO L225 Difference]: With dead ends: 22 [2021-11-03 03:48:56,843 INFO L226 Difference]: Without dead ends: 18 [2021-11-03 03:48:56,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:48:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-03 03:48:56,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-03 03:48:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-11-03 03:48:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-03 03:48:56,858 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2021-11-03 03:48:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:56,860 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-03 03:48:56,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-03 03:48:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 03:48:56,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:56,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:56,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:57,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:57,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:57,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1779540136, now seen corresponding path program 1 times [2021-11-03 03:48:57,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:57,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652440024] [2021-11-03 03:48:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:57,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:57,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:57,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:57,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:48:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:57,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:48:57,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:48:57,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:48:57,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:57,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652440024] [2021-11-03 03:48:57,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652440024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:57,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:57,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:48:57,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138282139] [2021-11-03 03:48:57,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:48:57,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:57,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:48:57,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:48:57,944 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-03 03:48:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:58,452 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-11-03 03:48:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:48:58,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 03:48:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:58,454 INFO L225 Difference]: With dead ends: 34 [2021-11-03 03:48:58,454 INFO L226 Difference]: Without dead ends: 22 [2021-11-03 03:48:58,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:48:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-03 03:48:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-11-03 03:48:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-03 03:48:58,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2021-11-03 03:48:58,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:58,463 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-03 03:48:58,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-03 03:48:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-03 03:48:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:48:58,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:58,465 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:58,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:58,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:58,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1277885066, now seen corresponding path program 1 times [2021-11-03 03:48:58,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:58,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885694342] [2021-11-03 03:48:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:58,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:58,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:58,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:58,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84fda09-99da-4a4a-8d57-d158afdba37e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:48:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:58,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 03:48:58,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:59,233 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 10 treesize of output 8 [2021-11-03 03:49:00,176 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 76 treesize of output 53 [2021-11-03 03:49:04,078 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-11-03 03:49:04,078 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 67 treesize of output 45 [2021-11-03 03:49:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:05,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:06,877 INFO L354 Elim1Store]: treesize reduction 25, result has 57.6 percent of original size [2021-11-03 03:49:06,878 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 303 treesize of output 260 [2021-11-03 03:49:07,063 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:07,064 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 260 treesize of output 256 [2021-11-03 03:49:07,404 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:07,405 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 30 treesize of output 34 [2021-11-03 03:49:12,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:12,579 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 362 treesize of output 379