./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8 --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 0bd5c2784fe43830be309c722c3fa9fc4d3ef116c17a8343acb2a2dfbcf830c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:21,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:21,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:21,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:21,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:21,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:21,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:21,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:21,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:21,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:21,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:21,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:21,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:21,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:21,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:21,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:21,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:21,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:21,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:21,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:21,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:21,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:21,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:21,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:21,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:21,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:21,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:21,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:21,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:21,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:21,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:21,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:21,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:21,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:21,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:21,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:21,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:21,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:21,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:21,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:21,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:21,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:08:21,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:21,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:21,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:21,881 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:21,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:21,882 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:21,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:08:21,883 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:21,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:21,891 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:08:21,892 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:08:21,892 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:21,893 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:08:21,893 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:08:21,893 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:08:21,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:21,895 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:21,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:21,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:21,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:21,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:21,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:21,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:21,897 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:21,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:21,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:21,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:21,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:21,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:21,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:21,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:21,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:21,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:21,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:21,900 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:08:21,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:08:21,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:21,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:21,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:21,902 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_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bd5c2784fe43830be309c722c3fa9fc4d3ef116c17a8343acb2a2dfbcf830c0 [2021-11-07 02:08:22,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:22,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:22,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:22,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:22,254 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:22,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c [2021-11-07 02:08:22,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/data/199378f25/8393ec68f4584b60a94747c9c60bf403/FLAG2d64d8282 [2021-11-07 02:08:22,931 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:22,932 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c [2021-11-07 02:08:22,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/data/199378f25/8393ec68f4584b60a94747c9c60bf403/FLAG2d64d8282 [2021-11-07 02:08:23,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/data/199378f25/8393ec68f4584b60a94747c9c60bf403 [2021-11-07 02:08:23,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:23,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:23,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:23,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:23,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:23,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120a410b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23, skipping insertion in model container [2021-11-07 02:08:23,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:23,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:23,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c[573,586] [2021-11-07 02:08:23,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:23,521 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:23,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound100.c[573,586] [2021-11-07 02:08:23,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:23,550 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:23,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23 WrapperNode [2021-11-07 02:08:23,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:23,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:23,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:23,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:23,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:23,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:08:23,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:08:23,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:08:23,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:08:23,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:08:23,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:08:23,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:08:23,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:23,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:23,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:08:23,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:08:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:08:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:08:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:08:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:08:24,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:24,228 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-07 02:08:24,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:24 BoogieIcfgContainer [2021-11-07 02:08:24,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:24,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:24,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:24,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:24,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:23" (1/3) ... [2021-11-07 02:08:24,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31523a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:24, skipping insertion in model container [2021-11-07 02:08:24,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23" (2/3) ... [2021-11-07 02:08:24,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31523a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:24, skipping insertion in model container [2021-11-07 02:08:24,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:24" (3/3) ... [2021-11-07 02:08:24,241 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound100.c [2021-11-07 02:08:24,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:24,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 02:08:24,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:24,322 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 [2021-11-07 02:08:24,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 02:08:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:08:24,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:24,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:08:24,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash 100327247, now seen corresponding path program 1 times [2021-11-07 02:08:24,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:24,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516081623] [2021-11-07 02:08:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:24,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:24,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:24,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516081623] [2021-11-07 02:08:24,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516081623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:24,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:24,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:24,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937559690] [2021-11-07 02:08:24,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:08:24,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:08:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:08:24,628 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:24,647 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-11-07 02:08:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:08:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 02:08:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:24,660 INFO L225 Difference]: With dead ends: 25 [2021-11-07 02:08:24,661 INFO L226 Difference]: Without dead ends: 11 [2021-11-07 02:08:24,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:08:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-07 02:08:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-07 02:08:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-07 02:08:24,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-11-07 02:08:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:24,708 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-07 02:08:24,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-07 02:08:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:08:24,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:24,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:08:24,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:08:24,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2021-11-07 02:08:24,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:24,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473467797] [2021-11-07 02:08:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:24,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:24,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:24,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045101529] [2021-11-07 02:08:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:24,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:24,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 02:08:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:24,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:08:24,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:25,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:25,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:25,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473467797] [2021-11-07 02:08:25,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:25,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045101529] [2021-11-07 02:08:25,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045101529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:25,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:25,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:25,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227773937] [2021-11-07 02:08:25,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:08:25,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:08:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:25,283 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:25,355 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-07 02:08:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:08:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 02:08:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:25,358 INFO L225 Difference]: With dead ends: 25 [2021-11-07 02:08:25,358 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 02:08:25,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:25,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 02:08:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2021-11-07 02:08:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-07 02:08:25,375 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-11-07 02:08:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:25,376 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-07 02:08:25,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-07 02:08:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:08:25,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:25,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:08:25,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:25,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:25,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1211488473, now seen corresponding path program 1 times [2021-11-07 02:08:25,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:25,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621412081] [2021-11-07 02:08:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:25,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:25,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:25,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621412081] [2021-11-07 02:08:25,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621412081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:25,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:08:25,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720182913] [2021-11-07 02:08:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:25,668 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:25,690 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-11-07 02:08:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 02:08:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:25,691 INFO L225 Difference]: With dead ends: 18 [2021-11-07 02:08:25,691 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 02:08:25,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 02:08:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 02:08:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-07 02:08:25,704 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-11-07 02:08:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:25,705 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-07 02:08:25,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-07 02:08:25,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:08:25,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:25,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:25,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 02:08:25,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash -263176832, now seen corresponding path program 1 times [2021-11-07 02:08:25,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:25,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678414499] [2021-11-07 02:08:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:25,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:25,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:25,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131624981] [2021-11-07 02:08:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:25,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:25,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:25,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 02:08:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:25,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:08:25,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:25,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:26,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:26,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678414499] [2021-11-07 02:08:26,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:26,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131624981] [2021-11-07 02:08:26,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131624981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:26,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:26,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 02:08:26,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961043414] [2021-11-07 02:08:26,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:08:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:08:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:08:26,119 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:26,250 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-07 02:08:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:08:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:08:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:26,251 INFO L225 Difference]: With dead ends: 18 [2021-11-07 02:08:26,252 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 02:08:26,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:08:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 02:08:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-07 02:08:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-07 02:08:26,260 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-11-07 02:08:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:26,261 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-07 02:08:26,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-07 02:08:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:08:26,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:26,262 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:26,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:26,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:26,490 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1349036158, now seen corresponding path program 1 times [2021-11-07 02:08:26,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:26,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576584179] [2021-11-07 02:08:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:26,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:26,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:26,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292098300] [2021-11-07 02:08:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:26,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:26,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:26,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 02:08:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:26,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:26,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:26,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:26,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:26,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576584179] [2021-11-07 02:08:26,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:26,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292098300] [2021-11-07 02:08:26,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292098300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:26,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2030290263] [2021-11-07 02:08:26,774 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 02:08:26,774 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:26,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:26,793 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:26,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:26,861 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-07 02:08:26,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:26,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:26,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:08:26,877 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:26,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:26,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:08:26,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:26,933 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_21|], 21=[|v_#valid_22|]} [2021-11-07 02:08:26,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:08:26,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:26,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:26,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:26,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:26,965 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:26,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:08:26,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:26,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:26,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:26,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:26,996 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:26,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:27,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:08:27,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:27,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:27,165 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:27,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 02:08:27,241 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:08:27,241 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-11-07 02:08:27,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 02:08:27,276 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-11-07 02:08:27,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:08:27,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:27,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-07 02:08:27,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 02:08:27,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,498 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:27,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-07 02:08:27,532 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:27,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-07 02:08:27,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-11-07 02:08:27,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:27,772 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:08:27,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:08:27,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:08:27,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,798 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:27,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 02:08:27,809 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:27,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 02:08:27,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:08:27,843 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:08:27,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:08:27,852 INFO L180 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-11-07 02:08:27,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 02:08:27,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:27,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:08:27,887 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:28,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:28,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:28,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-07 02:08:28,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974547110] [2021-11-07 02:08:28,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:08:28,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:08:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:08:28,636 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:28,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:28,707 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-11-07 02:08:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:08:28,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:08:28,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:28,708 INFO L225 Difference]: With dead ends: 27 [2021-11-07 02:08:28,709 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 02:08:28,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:08:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 02:08:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 02:08:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-07 02:08:28,714 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2021-11-07 02:08:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:28,715 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-07 02:08:28,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-07 02:08:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 02:08:28,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:28,716 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2021-11-07 02:08:28,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:28,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:28,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash 853809027, now seen corresponding path program 2 times [2021-11-07 02:08:28,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:28,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943604192] [2021-11-07 02:08:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:28,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:28,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:28,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827488353] [2021-11-07 02:08:28,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:28,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:28,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:28,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:28,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 02:08:29,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-07 02:08:29,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:29,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:08:29,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:29,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:29,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:29,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943604192] [2021-11-07 02:08:29,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:29,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827488353] [2021-11-07 02:08:29,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827488353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:29,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1437234778] [2021-11-07 02:08:29,337 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 02:08:29,337 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:29,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:29,338 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:29,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:29,360 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-07 02:08:29,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:29,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:08:29,364 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:29,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:08:29,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:29,393 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_22|], 21=[|v_#valid_23|]} [2021-11-07 02:08:29,404 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:08:29,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:29,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:29,406 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:29,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:08:29,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:29,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:29,430 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:29,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,440 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:08:29,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:29,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:29,480 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:29,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,490 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 02:08:29,503 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:08:29,503 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-11-07 02:08:29,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 02:08:29,521 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-11-07 02:08:29,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:08:29,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:29,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-07 02:08:29,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 02:08:29,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,642 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:29,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-07 02:08:29,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:29,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-07 02:08:29,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-11-07 02:08:29,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:29,818 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:08:29,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:08:29,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:08:29,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,839 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:29,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 02:08:29,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:29,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 02:08:29,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:08:29,887 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:08:29,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:08:29,894 INFO L180 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-11-07 02:08:29,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 02:08:29,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:29,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:08:29,923 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:30,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:30,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:30,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-07 02:08:30,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910830675] [2021-11-07 02:08:30,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:08:30,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:30,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:08:30,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-11-07 02:08:30,620 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:30,823 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2021-11-07 02:08:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 02:08:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 02:08:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:30,825 INFO L225 Difference]: With dead ends: 51 [2021-11-07 02:08:30,825 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 02:08:30,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2021-11-07 02:08:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 02:08:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-07 02:08:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-07 02:08:30,834 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 22 [2021-11-07 02:08:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:30,834 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-07 02:08:30,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-07 02:08:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 02:08:30,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:30,836 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2021-11-07 02:08:30,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:31,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:31,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash 353376013, now seen corresponding path program 3 times [2021-11-07 02:08:31,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:31,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196861585] [2021-11-07 02:08:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:31,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:31,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:31,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861171834] [2021-11-07 02:08:31,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:08:31,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:31,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:31,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:31,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 02:08:31,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:08:31,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:31,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 02:08:31,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:31,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:31,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:31,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196861585] [2021-11-07 02:08:31,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:31,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861171834] [2021-11-07 02:08:31,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861171834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:31,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387016130] [2021-11-07 02:08:31,984 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 02:08:31,984 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:31,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:31,985 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:31,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:31,993 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-07 02:08:31,994 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:31,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:31,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:08:31,996 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:31,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:31,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:08:32,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:32,005 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_23|], 21=[|v_#valid_24|]} [2021-11-07 02:08:32,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:08:32,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:32,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:32,030 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:32,038 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:08:32,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:32,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:32,040 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:32,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:32,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:08:32,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:32,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:32,076 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:32,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 02:08:32,089 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:08:32,090 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-11-07 02:08:32,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 02:08:32,102 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-11-07 02:08:32,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 02:08:32,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 02:08:32,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:32,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-07 02:08:32,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 02:08:32,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,191 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:32,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-07 02:08:32,203 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:32,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-11-07 02:08:32,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-11-07 02:08:32,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-07 02:08:32,244 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size [2021-11-07 02:08:32,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 02:08:32,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 02:08:32,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:32,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 02:08:32,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:33,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:33,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:33,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-07 02:08:33,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23399888] [2021-11-07 02:08:33,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 02:08:33,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 02:08:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 02:08:33,653 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:34,291 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2021-11-07 02:08:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 02:08:34,293 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 02:08:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:34,297 INFO L225 Difference]: With dead ends: 99 [2021-11-07 02:08:34,297 INFO L226 Difference]: Without dead ends: 95 [2021-11-07 02:08:34,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=814, Invalid=2048, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 02:08:34,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-07 02:08:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-07 02:08:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-11-07 02:08:34,335 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 46 [2021-11-07 02:08:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:34,336 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-11-07 02:08:34,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-11-07 02:08:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 02:08:34,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:34,343 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2021-11-07 02:08:34,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:34,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-07 02:08:34,562 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash -709387231, now seen corresponding path program 4 times [2021-11-07 02:08:34,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:34,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18704004] [2021-11-07 02:08:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:34,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:34,578 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:34,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067922959] [2021-11-07 02:08:34,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:08:34,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:34,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:34,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:34,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 02:08:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:34,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-07 02:08:34,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:36,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:36,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18704004] [2021-11-07 02:08:36,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:36,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067922959] [2021-11-07 02:08:36,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067922959] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:36,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899725684] [2021-11-07 02:08:36,736 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 02:08:36,736 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:36,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:36,737 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:36,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:36,749 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-07 02:08:36,750 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:36,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:08:36,752 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:36,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:08:36,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:36,763 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_24|], 21=[|v_#valid_25|]} [2021-11-07 02:08:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:08:36,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:36,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:36,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:36,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:08:36,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:36,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:36,796 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:36,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:36,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:08:36,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:36,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:36,835 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:36,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 02:08:36,847 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:08:36,848 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-11-07 02:08:36,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 02:08:36,860 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-11-07 02:08:36,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:08:36,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:36,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-07 02:08:36,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 02:08:36,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,970 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:36,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-07 02:08:36,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:36,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-07 02:08:37,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-11-07 02:08:37,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:37,109 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:08:37,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:08:37,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:37,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:08:37,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:37,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:37,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:37,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 02:08:37,149 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:37,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:37,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 02:08:37,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:08:37,172 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:08:37,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:08:37,179 INFO L180 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-11-07 02:08:37,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 02:08:37,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:37,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:08:37,194 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:37,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:37,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:37,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-11-07 02:08:37,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514845854] [2021-11-07 02:08:37,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 02:08:37,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 02:08:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=2035, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 02:08:37,964 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 50 states, 50 states have (on average 3.7) internal successors, (185), 49 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:39,511 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2021-11-07 02:08:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-07 02:08:39,512 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.7) internal successors, (185), 49 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 02:08:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:39,514 INFO L225 Difference]: With dead ends: 195 [2021-11-07 02:08:39,514 INFO L226 Difference]: Without dead ends: 191 [2021-11-07 02:08:39,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3340, Invalid=6962, Unknown=0, NotChecked=0, Total=10302 [2021-11-07 02:08:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-07 02:08:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-11-07 02:08:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2021-11-07 02:08:39,546 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 94 [2021-11-07 02:08:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:39,546 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2021-11-07 02:08:39,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.7) internal successors, (185), 49 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2021-11-07 02:08:39,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-07 02:08:39,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:39,552 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 1, 1, 1, 1, 1] [2021-11-07 02:08:39,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:39,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-07 02:08:39,766 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash 354205257, now seen corresponding path program 5 times [2021-11-07 02:08:39,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:39,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592432120] [2021-11-07 02:08:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:39,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:39,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:39,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259030341] [2021-11-07 02:08:39,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:39,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:39,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:39,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:39,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 02:08:41,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-07 02:08:41,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-07 02:08:41,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:42,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:46,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:46,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592432120] [2021-11-07 02:08:46,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:46,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259030341] [2021-11-07 02:08:46,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259030341] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:46,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306247158] [2021-11-07 02:08:46,491 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 02:08:46,491 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:46,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:46,492 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:46,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:46,505 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-07 02:08:46,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:46,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:08:46,508 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:46,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:08:46,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:08:46,516 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_25|], 21=[|v_#valid_26|]} [2021-11-07 02:08:46,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:08:46,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:46,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:08:46,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:46,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:08:46,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:46,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:08:46,549 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:46,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:46,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:08:46,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:46,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:08:46,608 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:08:46,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 02:08:46,619 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:08:46,620 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-11-07 02:08:46,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 02:08:46,631 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-11-07 02:08:46,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 02:08:46,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 02:08:46,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:46,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-07 02:08:46,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 02:08:46,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:46,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-07 02:08:46,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:08:46,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-11-07 02:08:46,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-11-07 02:08:46,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-07 02:08:46,754 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size [2021-11-07 02:08:46,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 02:08:46,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 02:08:46,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:46,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 02:08:46,782 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:48,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:48,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:48,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2021-11-07 02:08:48,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021895953] [2021-11-07 02:08:48,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-07 02:08:48,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-07 02:08:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=6337, Unknown=0, NotChecked=0, Total=10920 [2021-11-07 02:08:48,253 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand has 98 states, 98 states have (on average 3.8469387755102042) internal successors, (377), 97 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:52,936 INFO L93 Difference]: Finished difference Result 387 states and 434 transitions. [2021-11-07 02:08:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2021-11-07 02:08:52,939 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.8469387755102042) internal successors, (377), 97 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-11-07 02:08:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:52,942 INFO L225 Difference]: With dead ends: 387 [2021-11-07 02:08:52,943 INFO L226 Difference]: Without dead ends: 383 [2021-11-07 02:08:52,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6621 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=13558, Invalid=25448, Unknown=0, NotChecked=0, Total=39006 [2021-11-07 02:08:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-07 02:08:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-11-07 02:08:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2021-11-07 02:08:52,994 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 190 [2021-11-07 02:08:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:52,995 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2021-11-07 02:08:52,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.8469387755102042) internal successors, (377), 97 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2021-11-07 02:08:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-07 02:08:53,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:53,007 INFO L513 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 1, 1, 1, 1, 1] [2021-11-07 02:08:53,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:53,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:53,210 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 50291353, now seen corresponding path program 6 times [2021-11-07 02:08:53,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:53,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128224695] [2021-11-07 02:08:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:53,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:53,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:08:53,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905958838] [2021-11-07 02:08:53,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:08:53,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:53,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:53,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 02:08:53,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:08:53,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:53,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-07 02:08:53,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 0 proven. 17672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:58,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 0 proven. 17672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:00,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:09:00,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128224695] [2021-11-07 02:09:00,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:09:00,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905958838] [2021-11-07 02:09:00,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905958838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:00,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279325691] [2021-11-07 02:09:00,634 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 02:09:00,635 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:09:00,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:09:00,635 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:09:00,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:09:00,649 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-07 02:09:00,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:09:00,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:09:00,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:09:00,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:09:00,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:09:00,658 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_26|], 21=[|v_#valid_27|]} [2021-11-07 02:09:00,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:09:00,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:09:00,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:09:00,682 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:09:00,689 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:09:00,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:09:00,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:09:00,691 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:09:00,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:00,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:09:00,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:09:00,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:09:00,731 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:09:00,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,737 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 02:09:00,742 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:09:00,743 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-11-07 02:09:00,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 02:09:00,768 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-11-07 02:09:00,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:09:00,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-07 02:09:00,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-07 02:09:00,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 02:09:00,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,855 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:09:00,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 02:09:00,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:09:00,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-07 02:09:00,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-11-07 02:09:00,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:00,979 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:09:00,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:09:00,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:09:00,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,988 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:09:00,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 02:09:00,994 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:09:00,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:00,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 02:09:01,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:09:01,009 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-11-07 02:09:01,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 02:09:01,013 INFO L180 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-11-07 02:09:01,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 02:09:01,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:01,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 02:09:01,024 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:09:02,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:09:02,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:02,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 103 [2021-11-07 02:09:02,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044330891] [2021-11-07 02:09:02,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-07 02:09:02,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:09:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-07 02:09:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5180, Invalid=7030, Unknown=0, NotChecked=0, Total=12210 [2021-11-07 02:09:02,477 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand has 104 states, 104 states have (on average 3.894230769230769) internal successors, (405), 103 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:07,351 INFO L93 Difference]: Finished difference Result 411 states and 416 transitions. [2021-11-07 02:09:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2021-11-07 02:09:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.894230769230769) internal successors, (405), 103 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2021-11-07 02:09:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:07,356 INFO L225 Difference]: With dead ends: 411 [2021-11-07 02:09:07,356 INFO L226 Difference]: Without dead ends: 407 [2021-11-07 02:09:07,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 1034 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6283 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=15373, Invalid=28517, Unknown=0, NotChecked=0, Total=43890 [2021-11-07 02:09:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-07 02:09:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-11-07 02:09:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.0024630541871922) internal successors, (407), 406 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2021-11-07 02:09:07,393 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 382 [2021-11-07 02:09:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:07,394 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2021-11-07 02:09:07,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.894230769230769) internal successors, (405), 103 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2021-11-07 02:09:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-07 02:09:07,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:07,405 INFO L513 BasicCegarLoop]: trace histogram [101, 100, 100, 100, 1, 1, 1, 1, 1] [2021-11-07 02:09:07,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:07,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-11-07 02:09:07,634 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2032074717, now seen corresponding path program 7 times [2021-11-07 02:09:07,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:09:07,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919180729] [2021-11-07 02:09:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:07,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:09:07,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:09:07,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318580164] [2021-11-07 02:09:07,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:09:07,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:07,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:07,663 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:07,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 02:09:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:09:10,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:09:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:09:11,083 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:09:11,083 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:09:11,084 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:09:11,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:09:11,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-07 02:09:11,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:11,295 INFO L731 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1] [2021-11-07 02:09:11,300 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:09:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:09:11 BoogieIcfgContainer [2021-11-07 02:09:11,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:09:11,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:09:11,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:09:11,630 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:09:11,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:24" (3/4) ... [2021-11-07 02:09:11,632 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 02:09:11,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:09:11,976 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:09:11,977 INFO L168 Benchmark]: Toolchain (without parser) took 48714.09 ms. Allocated memory was 111.1 MB in the beginning and 234.9 MB in the end (delta: 123.7 MB). Free memory was 68.0 MB in the beginning and 159.3 MB in the end (delta: -91.3 MB). Peak memory consumption was 124.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,977 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:09:11,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.04 ms. Allocated memory is still 111.1 MB. Free memory was 67.8 MB in the beginning and 84.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.67 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,978 INFO L168 Benchmark]: Boogie Preprocessor took 33.38 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 82.2 MB in the end (delta: 928.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,979 INFO L168 Benchmark]: RCFGBuilder took 609.07 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 68.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,979 INFO L168 Benchmark]: TraceAbstraction took 47395.95 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 67.5 MB in the beginning and 69.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 82.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,980 INFO L168 Benchmark]: Witness Printer took 346.55 ms. Allocated memory was 195.0 MB in the beginning and 234.9 MB in the end (delta: 39.8 MB). Free memory was 69.4 MB in the beginning and 159.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:11,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.04 ms. Allocated memory is still 111.1 MB. Free memory was 67.8 MB in the beginning and 84.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.67 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.38 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 82.2 MB in the end (delta: 928.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 609.07 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 68.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 47395.95 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 67.5 MB in the beginning and 69.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 82.3 MB. Max. memory is 16.1 GB. * Witness Printer took 346.55 ms. Allocated memory was 195.0 MB in the beginning and 234.9 MB in the end (delta: 39.8 MB). Free memory was 69.4 MB in the beginning and 159.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=11] [L36] EXPR counter++ VAL [counter=12] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12] [L36] EXPR counter++ VAL [counter=13] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=13] [L36] EXPR counter++ VAL [counter=14] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=14] [L36] EXPR counter++ VAL [counter=15] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=15] [L36] EXPR counter++ VAL [counter=16] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=16] [L36] EXPR counter++ VAL [counter=17] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=17] [L36] EXPR counter++ VAL [counter=18] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18] [L36] EXPR counter++ VAL [counter=19] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=19] [L36] EXPR counter++ VAL [counter=20] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=20] [L36] EXPR counter++ VAL [counter=21] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=21] [L36] EXPR counter++ VAL [counter=22] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=22] [L36] EXPR counter++ VAL [counter=23] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=23] [L36] EXPR counter++ VAL [counter=24] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=24] [L36] EXPR counter++ VAL [counter=25] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=25] [L36] EXPR counter++ VAL [counter=26] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=26] [L36] EXPR counter++ VAL [counter=27] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=27] [L36] EXPR counter++ VAL [counter=28] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=28] [L36] EXPR counter++ VAL [counter=29] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=29] [L36] EXPR counter++ VAL [counter=30] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=30] [L36] EXPR counter++ VAL [counter=31] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=31] [L36] EXPR counter++ VAL [counter=32] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=32] [L36] EXPR counter++ VAL [counter=33] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=33] [L36] EXPR counter++ VAL [counter=34] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=34] [L36] EXPR counter++ VAL [counter=35] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=35] [L36] EXPR counter++ VAL [counter=36] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=36] [L36] EXPR counter++ VAL [counter=37] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=37] [L36] EXPR counter++ VAL [counter=38] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=38] [L36] EXPR counter++ VAL [counter=39] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=39] [L36] EXPR counter++ VAL [counter=40] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=40] [L36] EXPR counter++ VAL [counter=41] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=41] [L36] EXPR counter++ VAL [counter=42] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=42] [L36] EXPR counter++ VAL [counter=43] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=43] [L36] EXPR counter++ VAL [counter=44] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=44] [L36] EXPR counter++ VAL [counter=45] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=45] [L36] EXPR counter++ VAL [counter=46] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=46] [L36] EXPR counter++ VAL [counter=47] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=47] [L36] EXPR counter++ VAL [counter=48] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=48] [L36] EXPR counter++ VAL [counter=49] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=49] [L36] EXPR counter++ VAL [counter=50] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=50] [L36] EXPR counter++ VAL [counter=51] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=51] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=51] [L36] EXPR counter++ VAL [counter=52] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=52] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=52] [L36] EXPR counter++ VAL [counter=53] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=53] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=53] [L36] EXPR counter++ VAL [counter=54] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=54] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=54] [L36] EXPR counter++ VAL [counter=55] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=55] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=55] [L36] EXPR counter++ VAL [counter=56] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=56] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=56] [L36] EXPR counter++ VAL [counter=57] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=57] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=57] [L36] EXPR counter++ VAL [counter=58] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=58] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=58] [L36] EXPR counter++ VAL [counter=59] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=59] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=59] [L36] EXPR counter++ VAL [counter=60] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=60] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=60] [L36] EXPR counter++ VAL [counter=61] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=61] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=61] [L36] EXPR counter++ VAL [counter=62] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=62] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=62] [L36] EXPR counter++ VAL [counter=63] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=63] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=63] [L36] EXPR counter++ VAL [counter=64] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=64] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=64] [L36] EXPR counter++ VAL [counter=65] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=65] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=65] [L36] EXPR counter++ VAL [counter=66] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=66] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=66] [L36] EXPR counter++ VAL [counter=67] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=67] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=67] [L36] EXPR counter++ VAL [counter=68] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=68] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=68] [L36] EXPR counter++ VAL [counter=69] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=69] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=69] [L36] EXPR counter++ VAL [counter=70] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=70] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=70] [L36] EXPR counter++ VAL [counter=71] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=71] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=71] [L36] EXPR counter++ VAL [counter=72] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=72] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=72] [L36] EXPR counter++ VAL [counter=73] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=73] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=73] [L36] EXPR counter++ VAL [counter=74] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=74] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=74] [L36] EXPR counter++ VAL [counter=75] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=75] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=75] [L36] EXPR counter++ VAL [counter=76] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=76] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=76] [L36] EXPR counter++ VAL [counter=77] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=77] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=77] [L36] EXPR counter++ VAL [counter=78] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=78] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=78] [L36] EXPR counter++ VAL [counter=79] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=79] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=79] [L36] EXPR counter++ VAL [counter=80] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=80] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=80] [L36] EXPR counter++ VAL [counter=81] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=81] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=81] [L36] EXPR counter++ VAL [counter=82] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=82] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=82] [L36] EXPR counter++ VAL [counter=83] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=83] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=83] [L36] EXPR counter++ VAL [counter=84] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=84] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=84] [L36] EXPR counter++ VAL [counter=85] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=85] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=85] [L36] EXPR counter++ VAL [counter=86] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=86] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=86] [L36] EXPR counter++ VAL [counter=87] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=87] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=87] [L36] EXPR counter++ VAL [counter=88] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=88] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=88] [L36] EXPR counter++ VAL [counter=89] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=89] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=89] [L36] EXPR counter++ VAL [counter=90] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=90] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=90] [L36] EXPR counter++ VAL [counter=91] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=91] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=91] [L36] EXPR counter++ VAL [counter=92] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=92] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=92] [L36] EXPR counter++ VAL [counter=93] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=93] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=93] [L36] EXPR counter++ VAL [counter=94] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=94] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=94] [L36] EXPR counter++ VAL [counter=95] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=95] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=95] [L36] EXPR counter++ VAL [counter=96] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=96] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=96] [L36] EXPR counter++ VAL [counter=97] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=97] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=97] [L36] EXPR counter++ VAL [counter=98] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=98] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=98] [L36] EXPR counter++ VAL [counter=99] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=99] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=99] [L36] EXPR counter++ VAL [counter=100] [L36] COND TRUE counter++<100 [L16] COND FALSE !(!(cond)) VAL [counter=100] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=100] [L36] EXPR counter++ VAL [counter=101] [L36] COND FALSE !(counter++<100) [L16] COND TRUE !(cond) VAL [counter=101] [L18] reach_error() VAL [counter=101] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.9s, OverallIterations: 11, TraceHistogramMax: 101, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 213 SDslu, 749 SDs, 0 SdLazy, 648 SolverSat, 212 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2521 GetRequests, 1904 SyntacticMatches, 3 SemanticMatches, 614 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15718 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=10, InterpolantAutomatonStates: 580, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 1174 NumberOfCodeBlocks, 1174 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1507 ConstructedInterpolants, 2 QuantifiedInterpolants, 4502 SizeOfPredicates, 197 NumberOfNonLiveVariables, 2619 ConjunctsInSsa, 391 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/46212 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 02:09:12,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa53569-64be-4df4-bb7c-bc8eeb85680d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE