./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array1_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:41:45,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:41:45,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:41:45,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:41:45,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:41:45,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:41:45,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:41:45,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:41:45,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:41:45,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:41:45,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:41:45,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:41:45,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:41:45,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:41:45,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:41:45,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:41:45,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:41:45,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:41:45,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:41:45,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:41:45,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:41:45,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:41:45,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:41:45,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:41:45,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:41:45,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:41:45,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:41:45,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:41:45,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:41:45,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:41:45,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:41:45,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:41:45,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:41:45,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:41:45,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:41:45,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:41:45,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:41:45,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:41:45,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:41:45,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:41:45,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:41:45,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:41:45,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:41:45,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:41:45,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:41:45,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:41:45,197 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:41:45,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:41:45,197 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:41:45,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:41:45,198 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:41:45,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:41:45,198 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:41:45,198 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:41:45,199 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:41:45,199 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:41:45,199 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:41:45,199 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:41:45,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:41:45,201 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:41:45,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:41:45,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:41:45,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:41:45,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:41:45,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:41:45,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:41:45,202 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:41:45,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:41:45,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:41:45,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:41:45,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:41:45,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:41:45,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:41:45,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:41:45,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:41:45,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:41:45,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:41:45,205 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:41:45,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:41:45,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:41:45,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:41:45,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:41:45,206 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_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 [2021-11-19 14:41:45,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:41:45,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:41:45,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:41:45,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:41:45,551 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:41:45,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-19 14:41:45,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/d0c2b1a51/b2a217ff59c34378aba52a0beb899f6c/FLAGb85bb9772 [2021-11-19 14:41:46,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:41:46,212 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-19 14:41:46,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/d0c2b1a51/b2a217ff59c34378aba52a0beb899f6c/FLAGb85bb9772 [2021-11-19 14:41:46,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/d0c2b1a51/b2a217ff59c34378aba52a0beb899f6c [2021-11-19 14:41:46,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:41:46,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:41:46,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:41:46,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:41:46,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:41:46,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452b3a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46, skipping insertion in model container [2021-11-19 14:41:46,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:41:46,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:41:46,775 WARN L230 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_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-19 14:41:46,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:41:46,815 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:41:46,836 WARN L230 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_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-19 14:41:46,870 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:41:46,887 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:41:46,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46 WrapperNode [2021-11-19 14:41:46,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:41:46,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:41:46,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:41:46,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:41:46,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,955 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2021-11-19 14:41:46,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:41:46,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:41:46,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:41:46,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:41:46,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:46,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:47,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:47,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:41:47,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:41:47,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:41:47,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:41:47,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (1/1) ... [2021-11-19 14:41:47,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:41:47,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:41:47,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:41:47,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:41:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:41:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:41:47,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:41:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:41:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:41:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:41:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:41:47,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:41:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 14:41:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:41:47,202 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:41:47,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:41:47,349 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:41:47,381 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:41:47,381 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 14:41:47,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:41:47 BoogieIcfgContainer [2021-11-19 14:41:47,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:41:47,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:41:47,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:41:47,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:41:47,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:41:46" (1/3) ... [2021-11-19 14:41:47,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409e58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:41:47, skipping insertion in model container [2021-11-19 14:41:47,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:46" (2/3) ... [2021-11-19 14:41:47,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409e58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:41:47, skipping insertion in model container [2021-11-19 14:41:47,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:41:47" (3/3) ... [2021-11-19 14:41:47,407 INFO L111 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2021-11-19 14:41:47,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:41:47,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:41:47,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:41:47,495 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 [2021-11-19 14:41:47,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:41:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:41:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:41:47,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:47,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:41:47,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:41:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash -348000308, now seen corresponding path program 1 times [2021-11-19 14:41:47,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:41:47,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304442279] [2021-11-19 14:41:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:47,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:41:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:41:47,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:41:47,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304442279] [2021-11-19 14:41:47,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304442279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:47,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:47,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:41:47,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296143680] [2021-11-19 14:41:47,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:47,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:41:47,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:41:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:41:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:41:47,872 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:41:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:47,932 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-11-19 14:41:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:41:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 14:41:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:47,943 INFO L225 Difference]: With dead ends: 24 [2021-11-19 14:41:47,944 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 14:41:47,952 INFO L932 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 [2021-11-19 14:41:47,960 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:47,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:41:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 14:41:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 14:41:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:41:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-11-19 14:41:48,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2021-11-19 14:41:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:48,024 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-19 14:41:48,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:41:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-19 14:41:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:41:48,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:48,029 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:41:48,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:41:48,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:41:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1400754714, now seen corresponding path program 1 times [2021-11-19 14:41:48,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:41:48,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457729949] [2021-11-19 14:41:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:48,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:41:48,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 14:41:48,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758656267] [2021-11-19 14:41:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:48,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:41:48,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:41:48,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:41:48,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 14:41:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:48,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:41:48,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:41:48,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:41:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:41:48,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:41:48,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457729949] [2021-11-19 14:41:48,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:41:48,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758656267] [2021-11-19 14:41:48,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758656267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:48,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:48,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:41:48,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226012264] [2021-11-19 14:41:48,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:48,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:41:48,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:41:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:41:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:48,404 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:41:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:48,440 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-11-19 14:41:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:41:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-19 14:41:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:48,442 INFO L225 Difference]: With dead ends: 19 [2021-11-19 14:41:48,442 INFO L226 Difference]: Without dead ends: 16 [2021-11-19 14:41:48,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:41:48,445 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:48,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:41:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-19 14:41:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-19 14:41:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:41:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-19 14:41:48,453 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2021-11-19 14:41:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:48,453 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-19 14:41:48,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:41:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-19 14:41:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:41:48,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:48,455 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:41:48,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:41:48,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-19 14:41:48,670 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:41:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash 473487722, now seen corresponding path program 1 times [2021-11-19 14:41:48,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:41:48,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108183695] [2021-11-19 14:41:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:48,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:41:48,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 14:41:48,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389645316] [2021-11-19 14:41:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:48,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:41:48,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:41:48,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:41:48,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 14:41:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:48,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:41:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:41:48,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:41:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:41:48,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:41:48,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108183695] [2021-11-19 14:41:48,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:41:48,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389645316] [2021-11-19 14:41:48,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389645316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:48,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:48,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-19 14:41:48,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015902754] [2021-11-19 14:41:48,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:48,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:41:48,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:41:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:41:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:41:48,969 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 14:41:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:49,066 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-19 14:41:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:41:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-11-19 14:41:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:49,068 INFO L225 Difference]: With dead ends: 29 [2021-11-19 14:41:49,068 INFO L226 Difference]: Without dead ends: 17 [2021-11-19 14:41:49,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:41:49,071 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:49,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:41:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-19 14:41:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-19 14:41:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:41:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-19 14:41:49,079 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2021-11-19 14:41:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:49,080 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-19 14:41:49,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 14:41:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-19 14:41:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:41:49,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:49,082 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:41:49,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:41:49,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:41:49,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:41:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash 199414858, now seen corresponding path program 1 times [2021-11-19 14:41:49,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:41:49,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219949184] [2021-11-19 14:41:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:49,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:41:49,342 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 14:41:49,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219909353] [2021-11-19 14:41:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:49,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:41:49,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:41:49,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:41:49,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 14:41:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:49,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:41:49,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:49,536 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 [2021-11-19 14:41:49,623 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 27 treesize of output 15 [2021-11-19 14:41:50,303 INFO L354 Elim1Store]: treesize reduction 152, result has 4.4 percent of original size [2021-11-19 14:41:50,305 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 144 treesize of output 115 [2021-11-19 14:41:50,365 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 14:41:50,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:41:50,425 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 [2021-11-19 14:41:50,874 INFO L354 Elim1Store]: treesize reduction 97, result has 6.7 percent of original size [2021-11-19 14:41:50,875 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 56 treesize of output 33 [2021-11-19 14:41:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:41:50,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:19,383 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~num~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~sum~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_1| Int)) (or (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_1|) (exists ((|ULTIMATE.start_main_~index~0#1| Int)) (and (<= 0 |ULTIMATE.start_main_~index~0#1|) (< |ULTIMATE.start_main_~index~0#1| c_~ARR_SIZE~0) (let ((.cse4 (* |v_ULTIMATE.start_main_~num~0#1_BEFORE_CALL_2| |ULTIMATE.start_main_~index~0#1|))) (let ((.cse5 (mod (+ (* |ULTIMATE.start_main_~index~0#1| 4294967295) 4294967295 c_~ARR_SIZE~0) 4294967296)) (.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2| (store (select |c_#memory_int| |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2|) (+ (* |ULTIMATE.start_main_~index~0#1| 4) |v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2|) (* .cse4 |v_ULTIMATE.start_main_~num~0#1_BEFORE_CALL_2|))))) (let ((.cse2 (select .cse0 |v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2|)) (.cse3 (* .cse5 4))) (or (and (not (= (let ((.cse1 (store .cse2 (+ |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2| (- 17179869184) .cse3) .cse4))) (+ (select (select (store .cse0 |v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2| .cse1) |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2|) (select .cse1 |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~sum~0#1_BEFORE_CALL_4|)) 0)) (< 2147483647 .cse5)) (and (<= .cse5 2147483647) (not (= (let ((.cse6 (store .cse2 (+ |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2| .cse3) .cse4))) (+ (select .cse6 |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~sum~0#1_BEFORE_CALL_4| (select (select (store .cse0 |v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2| .cse6) |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2|))) 0))))))))) (< |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_1| 0) (let ((.cse12 (* |v_ULTIMATE.start_main_~num~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_1|))) (let ((.cse7 (mod (+ (* |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_1| 4294967295) 4294967295 c_~ARR_SIZE~0) 4294967296)) (.cse8 (store |c_#memory_int| |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2| (store (select |c_#memory_int| |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2| (* |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_1| 4)) (* .cse12 |v_ULTIMATE.start_main_~num~0#1_BEFORE_CALL_2|))))) (let ((.cse10 (select .cse8 |v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2|)) (.cse11 (* .cse7 4))) (and (or (< 2147483647 .cse7) (= (let ((.cse9 (store .cse10 (+ |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2| .cse11) .cse12))) (+ (select (select (store .cse8 |v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2| .cse9) |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2|) (select .cse9 |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~sum~0#1_BEFORE_CALL_4|)) 0)) (or (<= .cse7 2147483647) (= (let ((.cse13 (store .cse10 (+ |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2| (- 17179869184) .cse11) .cse12))) (+ (select (select (store .cse8 |v_ULTIMATE.start_main_~#array2~0#1.base_BEFORE_CALL_2| .cse13) |v_ULTIMATE.start_main_~#array1~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#array1~0#1.offset_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~sum~0#1_BEFORE_CALL_4| (select .cse13 |v_ULTIMATE.start_main_~#array2~0#1.offset_BEFORE_CALL_2|))) 0)))))))) (not (= |c_assume_abort_if_not_#in~cond| 1))) is different from true [2021-11-19 14:45:23,802 INFO L354 Elim1Store]: treesize reduction 214, result has 30.7 percent of original size [2021-11-19 14:45:23,803 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 8868 treesize of output 3314 [2021-11-19 14:45:23,927 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:23,928 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 3314 treesize of output 3186 [2021-11-19 14:45:24,197 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:24,197 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 40 treesize of output 44 [2021-11-19 14:45:24,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:24,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:24,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:24,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 50 treesize of output 48 [2021-11-19 14:45:25,679 INFO L354 Elim1Store]: treesize reduction 28, result has 78.3 percent of original size [2021-11-19 14:45:25,679 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 4530 treesize of output 4474 [2021-11-19 14:45:25,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:45:25,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219949184] [2021-11-19 14:45:25,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:45:25,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219909353] [2021-11-19 14:45:25,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 14:45:25,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [762310419] [2021-11-19 14:45:25,748 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-19 14:45:25,749 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:45:25,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:45:25,759 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:45:25,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:45:25,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,815 INFO L185 QuantifierPusher]: treesize reduction 5, result has 92.9 percent of original size 65 [2021-11-19 14:45:25,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,822 INFO L185 QuantifierPusher]: treesize reduction 5, result has 92.9 percent of original size 65 [2021-11-19 14:45:25,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,906 INFO L180 QuantifierPusher]: treesize reduction 21, result has 89.1 percent of original size [2021-11-19 14:45:25,907 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:25,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:25,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-19 14:45:25,911 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:25,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 14:45:25,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-19 14:45:25,913 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:25,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:45:25,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:25,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 14:45:25,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-19 14:45:25,925 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_9|], 22=[|v_#valid_21|]} [2021-11-19 14:45:25,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 14:45:25,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:25,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:25,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:25,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:25,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2021-11-19 14:45:25,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 14:45:25,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:25,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 14:45:25,959 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:25,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:25,968 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,064 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-19 14:45:26,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 61 [2021-11-19 14:45:26,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 14:45:26,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 14:45:26,070 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-19 14:45:26,082 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,082 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:286, output treesize:141 [2021-11-19 14:45:26,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,088 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 14:45:26,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-19 14:45:26,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-19 14:45:26,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 14:45:26,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 14:45:26,111 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-19 14:45:26,124 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,124 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:190, output treesize:172 [2021-11-19 14:45:26,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,208 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,212 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-19 14:45:26,214 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 14:45:26,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 398 [2021-11-19 14:45:26,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 353 [2021-11-19 14:45:26,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 418 [2021-11-19 14:45:26,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-19 14:45:26,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 14:45:26,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 14:45:26,259 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:26,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2021-11-19 14:45:26,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-19 14:45:26,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-19 14:45:26,290 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,338 INFO L180 QuantifierPusher]: treesize reduction 107, result has 77.9 percent of original size [2021-11-19 14:45:26,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 377 [2021-11-19 14:45:26,343 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 14:45:26,343 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:520, output treesize:377 [2021-11-19 14:45:26,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,435 INFO L180 QuantifierPusher]: treesize reduction 30, result has 75.4 percent of original size [2021-11-19 14:45:26,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 14:45:26,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-19 14:45:26,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:26,459 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-19 14:45:26,460 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 [2021-11-19 14:45:26,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:45:26,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:45:26,463 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 14:45:26,468 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,468 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:73 [2021-11-19 14:45:26,474 INFO L180 QuantifierPusher]: treesize reduction 31, result has 65.6 percent of original size [2021-11-19 14:45:26,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-19 14:45:26,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:26,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 14:45:26,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 14:45:26,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,501 INFO L185 QuantifierPusher]: treesize reduction 5, result has 91.8 percent of original size 56 [2021-11-19 14:45:26,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,513 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:26,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 14:45:26,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 14:45:26,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,526 INFO L185 QuantifierPusher]: treesize reduction 5, result has 91.8 percent of original size 56 [2021-11-19 14:45:26,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,565 INFO L180 QuantifierPusher]: treesize reduction 35, result has 85.4 percent of original size [2021-11-19 14:45:26,566 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 14:45:26,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-19 14:45:26,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-11-19 14:45:26,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 14:45:26,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:26,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:26,584 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,666 INFO L354 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2021-11-19 14:45:26,666 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 [2021-11-19 14:45:26,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:45:26,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:45:26,670 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-19 14:45:26,683 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:45:26,683 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:263, output treesize:131 [2021-11-19 14:45:26,704 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.2 percent of original size [2021-11-19 14:45:26,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-19 14:45:26,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-19 14:45:26,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,756 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.0 percent of original size [2021-11-19 14:45:26,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-19 14:45:26,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,772 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,775 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:45:26,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:26,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:45:26,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 14:45:26,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 14:45:26,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:45:26,796 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 22 for LOIs [2021-11-19 14:45:26,798 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:45:37,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:45:37,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:37,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 14:45:37,152 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-19 14:45:37,152 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 14:45:37,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:45:37,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:37,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:45:37,382 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-19 14:45:37,385 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:45:37,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:45:37 BoogieIcfgContainer [2021-11-19 14:45:37,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:45:37,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:45:37,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:45:37,406 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:45:37,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:41:47" (3/4) ... [2021-11-19 14:45:37,409 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:45:37,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:45:37,410 INFO L158 Benchmark]: Toolchain (without parser) took 230867.51ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 76.4MB in the beginning and 69.0MB in the end (delta: 7.4MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2021-11-19 14:45:37,410 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:45:37,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.52ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 76.2MB in the beginning and 104.8MB in the end (delta: -28.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:45:37,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.89ms. Allocated memory is still 127.9MB. Free memory was 104.8MB in the beginning and 103.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:45:37,411 INFO L158 Benchmark]: Boogie Preprocessor took 58.20ms. Allocated memory is still 127.9MB. Free memory was 103.3MB in the beginning and 102.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:45:37,411 INFO L158 Benchmark]: RCFGBuilder took 368.49ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 90.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:45:37,412 INFO L158 Benchmark]: TraceAbstraction took 230017.86ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.8MB in the beginning and 69.0MB in the end (delta: 20.8MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2021-11-19 14:45:37,412 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 155.2MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:45:37,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.52ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 76.2MB in the beginning and 104.8MB in the end (delta: -28.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.89ms. Allocated memory is still 127.9MB. Free memory was 104.8MB in the beginning and 103.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.20ms. Allocated memory is still 127.9MB. Free memory was 103.3MB in the beginning and 102.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 368.49ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 90.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 230017.86ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.8MB in the beginning and 69.0MB in the end (delta: 20.8MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 155.2MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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() [L39] CALL assume_abort_if_not(ARR_SIZE > 0) [L28] COND FALSE !(!cond) [L39] RET assume_abort_if_not(ARR_SIZE > 0) [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=0 && index < ARR_SIZE) [L28] COND FALSE !(!cond) [L58] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L60] array1[index] = num*(num*index) [L61] array2[ARR_SIZE-1-index] = num * index [L63] temp = __VERIFIER_nondet_int() [L64] COND TRUE temp == 0 [L67] count=0 [L67] 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_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs 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 [2021-11-19 14:45:40,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:40,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:40,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:40,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:40,536 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:40,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-19 14:45:40,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/2c94dc530/d64cd7d3d0104498a8acf26db2f652c7/FLAG9c225958c [2021-11-19 14:45:41,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:41,159 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/sv-benchmarks/c/array-patterns/array1_pattern.c [2021-11-19 14:45:41,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/2c94dc530/d64cd7d3d0104498a8acf26db2f652c7/FLAG9c225958c [2021-11-19 14:45:41,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/data/2c94dc530/d64cd7d3d0104498a8acf26db2f652c7 [2021-11-19 14:45:41,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:41,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:41,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:41,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:41,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:41,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792a53bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41, skipping insertion in model container [2021-11-19 14:45:41,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:41,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:41,709 WARN L230 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_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-19 14:45:41,731 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:41,742 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:45:41,769 WARN L230 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_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2021-11-19 14:45:41,788 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:41,814 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:45:41,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41 WrapperNode [2021-11-19 14:45:41,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:41,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:41,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:45:41,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:45:41,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,892 INFO L137 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2021-11-19 14:45:41,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:41,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:45:41,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:45:41,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:45:41,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:45:41,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:45:41,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:45:41,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:45:41,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (1/1) ... [2021-11-19 14:45:41,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:45:41,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:45:41,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:45:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:45:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:45:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:45:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:45:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:45:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:45:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:45:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:45:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:45:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:45:42,114 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:45:42,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:45:42,393 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:45:42,399 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:45:42,400 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 14:45:42,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:42 BoogieIcfgContainer [2021-11-19 14:45:42,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:45:42,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:45:42,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:45:42,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:45:42,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:45:41" (1/3) ... [2021-11-19 14:45:42,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9d9aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:42, skipping insertion in model container [2021-11-19 14:45:42,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:41" (2/3) ... [2021-11-19 14:45:42,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9d9aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:42, skipping insertion in model container [2021-11-19 14:45:42,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:42" (3/3) ... [2021-11-19 14:45:42,442 INFO L111 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2021-11-19 14:45:42,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:45:42,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:45:42,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:45:42,525 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 [2021-11-19 14:45:42,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:45:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:45:42,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:42,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:42,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2021-11-19 14:45:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:42,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580301822] [2021-11-19 14:45:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:42,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:42,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:42,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:42,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:45:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:42,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:45:42,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:42,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:42,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:42,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580301822] [2021-11-19 14:45:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580301822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:42,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:42,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:45:42,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586872047] [2021-11-19 14:45:42,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:42,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:45:42,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:45:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:45:42,881 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:45:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:42,902 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2021-11-19 14:45:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:45:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 14:45:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:42,912 INFO L225 Difference]: With dead ends: 47 [2021-11-19 14:45:42,913 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 14:45:42,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:45:42,929 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:42,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 14:45:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 14:45:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-19 14:45:42,969 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2021-11-19 14:45:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:42,970 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-19 14:45:42,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:45:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-19 14:45:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:45:42,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:42,973 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:42,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:43,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:43,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2021-11-19 14:45:43,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:43,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410367828] [2021-11-19 14:45:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:43,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:43,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:43,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:43,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:45:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:43,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:43,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:45:43,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:45:43,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:43,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410367828] [2021-11-19 14:45:43,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410367828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:43,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:43,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:45:43,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327474199] [2021-11-19 14:45:43,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:43,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:45:43,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:45:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:45:43,457 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:43,505 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-19 14:45:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-19 14:45:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:43,510 INFO L225 Difference]: With dead ends: 26 [2021-11-19 14:45:43,510 INFO L226 Difference]: Without dead ends: 22 [2021-11-19 14:45:43,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:45:43,517 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:43,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-19 14:45:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-19 14:45:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-19 14:45:43,529 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2021-11-19 14:45:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:43,532 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-19 14:45:43,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-19 14:45:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 14:45:43,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:43,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:43,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:43,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:43,751 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2021-11-19 14:45:43,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:43,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084785913] [2021-11-19 14:45:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:43,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:43,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:43,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:43,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:45:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:45:43,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:45:44,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:45:44,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:44,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084785913] [2021-11-19 14:45:44,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084785913] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:44,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:44,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2021-11-19 14:45:44,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750385285] [2021-11-19 14:45:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:44,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:45:44,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:45:44,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:45:44,490 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:44,506 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-11-19 14:45:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:45:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-19 14:45:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:44,509 INFO L225 Difference]: With dead ends: 43 [2021-11-19 14:45:44,510 INFO L226 Difference]: Without dead ends: 27 [2021-11-19 14:45:44,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:45:44,517 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:44,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2021-11-19 14:45:44,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-19 14:45:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-19 14:45:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-11-19 14:45:44,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2021-11-19 14:45:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:44,534 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-11-19 14:45:44,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:45:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-11-19 14:45:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:45:44,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:44,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:44,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:44,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:44,760 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2021-11-19 14:45:44,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:44,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052756342] [2021-11-19 14:45:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:44,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:44,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:44,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:44,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd9cbaf-8a00-449c-bdcc-e557f2ce46a1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:45:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:44,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 14:45:44,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:45,068 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 [2021-11-19 14:45:45,808 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 [2021-11-19 14:45:48,751 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-11-19 14:45:48,755 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 [2021-11-19 14:45:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:49,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:50,945 INFO L354 Elim1Store]: treesize reduction 25, result has 57.6 percent of original size [2021-11-19 14:45:50,946 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 [2021-11-19 14:45:51,056 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:51,057 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 [2021-11-19 14:45:51,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 155 [2021-11-19 14:45:56,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 155 [2021-11-19 14:46:11,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 208 [2021-11-19 14:48:45,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2021-11-19 14:49:06,999 WARN L227 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 11 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 14:49:37,328 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 241 treesize of output 235 [2021-11-19 14:50:00,906 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 130 treesize of output 126 [2021-11-19 14:50:17,987 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 214 treesize of output 208 [2021-11-19 14:53:13,420 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 140 treesize of output 136 [2021-11-19 14:53:15,528 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 63 treesize of output 61 [2021-11-19 14:53:15,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61