./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan --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 fbfa3bfac4b511c6b363106645da3687422db2a8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:34:05,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:34:05,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:34:05,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:34:05,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:34:05,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:34:05,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:34:05,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:34:05,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:34:05,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:34:05,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:34:05,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:34:05,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:34:05,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:34:05,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:34:05,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:34:05,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:34:05,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:34:05,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:34:05,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:34:05,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:34:05,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:34:05,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:34:05,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:34:05,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:34:05,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:34:05,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:34:05,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:34:05,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:34:05,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:34:05,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:34:05,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:34:05,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:34:05,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:34:05,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:34:05,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:34:05,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:34:05,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:34:05,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:34:05,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:34:05,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:34:05,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:34:05,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:34:05,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:34:05,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:34:05,897 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:34:05,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:34:05,898 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:34:05,898 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:34:05,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:34:05,899 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:34:05,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:34:05,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:34:05,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:34:05,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:34:05,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:34:05,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:34:05,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:34:05,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:34:05,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:34:05,902 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-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbfa3bfac4b511c6b363106645da3687422db2a8 [2020-12-09 07:34:06,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:34:06,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:34:06,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:34:06,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:34:06,102 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:34:06,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-12-09 07:34:06,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/data/45b2ffaa2/99837608c7f14aa0afb1e043e52610d6/FLAG178c2c6cc [2020-12-09 07:34:06,497 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:34:06,498 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-12-09 07:34:06,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/data/45b2ffaa2/99837608c7f14aa0afb1e043e52610d6/FLAG178c2c6cc [2020-12-09 07:34:06,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/data/45b2ffaa2/99837608c7f14aa0afb1e043e52610d6 [2020-12-09 07:34:06,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:34:06,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:34:06,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:34:06,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:34:06,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:34:06,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1342b9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06, skipping insertion in model container [2020-12-09 07:34:06,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:34:06,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:34:06,644 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c[537,550] [2020-12-09 07:34:06,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:34:06,668 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:34:06,677 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c[537,550] [2020-12-09 07:34:06,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:34:06,694 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:34:06,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06 WrapperNode [2020-12-09 07:34:06,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:34:06,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:34:06,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:34:06,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:34:06,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:34:06,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:34:06,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:34:06,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:34:06,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... [2020-12-09 07:34:06,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:34:06,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:34:06,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:34:06,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:34:06,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:34:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:34:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:34:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:34:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:34:07,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:34:07,040 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-09 07:34:07,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:07 BoogieIcfgContainer [2020-12-09 07:34:07,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:34:07,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:34:07,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:34:07,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:34:07,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:34:06" (1/3) ... [2020-12-09 07:34:07,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19308fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:07, skipping insertion in model container [2020-12-09 07:34:07,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:06" (2/3) ... [2020-12-09 07:34:07,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19308fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:07, skipping insertion in model container [2020-12-09 07:34:07,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:07" (3/3) ... [2020-12-09 07:34:07,049 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound1.c [2020-12-09 07:34:07,058 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:34:07,060 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 07:34:07,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 07:34:07,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:34:07,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:34:07,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:34:07,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:34:07,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:34:07,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:34:07,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:34:07,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:34:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-12-09 07:34:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:34:07,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:07,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:34:07,104 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash 155587567, now seen corresponding path program 1 times [2020-12-09 07:34:07,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:07,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797000554] [2020-12-09 07:34:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:34:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:07,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797000554] [2020-12-09 07:34:07,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:34:07,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:34:07,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734904174] [2020-12-09 07:34:07,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:34:07,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:34:07,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:34:07,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:34:07,293 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-12-09 07:34:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:34:07,386 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2020-12-09 07:34:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:34:07,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 07:34:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:34:07,394 INFO L225 Difference]: With dead ends: 92 [2020-12-09 07:34:07,395 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 07:34:07,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:34:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 07:34:07,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2020-12-09 07:34:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 07:34:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 07:34:07,425 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-12-09 07:34:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:34:07,426 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 07:34:07,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:34:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 07:34:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:34:07,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:07,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:34:07,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:34:07,427 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:07,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:07,428 INFO L82 PathProgramCache]: Analyzing trace with hash -804784526, now seen corresponding path program 1 times [2020-12-09 07:34:07,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:07,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760531336] [2020-12-09 07:34:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:07,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:34:07,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79445002] [2020-12-09 07:34:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:34:07,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:34:07,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:34:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:07,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:34:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:07,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760531336] [2020-12-09 07:34:07,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:34:07,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79445002] [2020-12-09 07:34:07,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:34:07,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 07:34:07,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288284831] [2020-12-09 07:34:07,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:34:07,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:34:07,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:34:07,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:34:07,547 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-12-09 07:34:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:34:07,564 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-12-09 07:34:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:34:07,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 07:34:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:34:07,566 INFO L225 Difference]: With dead ends: 51 [2020-12-09 07:34:07,566 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 07:34:07,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:34:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 07:34:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 07:34:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 07:34:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-09 07:34:07,573 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2020-12-09 07:34:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:34:07,574 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-09 07:34:07,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:34:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-09 07:34:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:34:07,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:07,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:34:07,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 07:34:07,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:07,779 INFO L82 PathProgramCache]: Analyzing trace with hash -804047694, now seen corresponding path program 1 times [2020-12-09 07:34:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524728825] [2020-12-09 07:34:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:34:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:07,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524728825] [2020-12-09 07:34:07,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:34:07,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:34:07,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696765892] [2020-12-09 07:34:07,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:34:07,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:34:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:34:07,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:34:07,935 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2020-12-09 07:34:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:34:07,985 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-12-09 07:34:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:34:07,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 07:34:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:34:07,986 INFO L225 Difference]: With dead ends: 51 [2020-12-09 07:34:07,986 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 07:34:07,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:34:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 07:34:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-12-09 07:34:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 07:34:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 07:34:07,991 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2020-12-09 07:34:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:34:07,991 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 07:34:07,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:34:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 07:34:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:34:07,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:07,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:34:07,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:34:07,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:07,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:07,992 INFO L82 PathProgramCache]: Analyzing trace with hash 404435477, now seen corresponding path program 1 times [2020-12-09 07:34:07,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:07,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095056820] [2020-12-09 07:34:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:08,004 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:34:08,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599916114] [2020-12-09 07:34:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:34:08,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 07:34:08,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:34:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:08,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:34:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:08,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095056820] [2020-12-09 07:34:08,080 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:34:08,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599916114] [2020-12-09 07:34:08,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:34:08,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:34:08,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771350639] [2020-12-09 07:34:08,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:34:08,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:34:08,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:34:08,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:34:08,083 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-12-09 07:34:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:34:10,272 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-09 07:34:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 07:34:10,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 07:34:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:34:10,274 INFO L225 Difference]: With dead ends: 100 [2020-12-09 07:34:10,274 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 07:34:10,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:34:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 07:34:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-12-09 07:34:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 07:34:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-12-09 07:34:10,285 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 9 [2020-12-09 07:34:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:34:10,285 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-12-09 07:34:10,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:34:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-12-09 07:34:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:34:10,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:10,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:34:10,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:10,488 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:10,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:10,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1567670847, now seen corresponding path program 1 times [2020-12-09 07:34:10,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:10,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644074996] [2020-12-09 07:34:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:10,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:34:10,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024472506] [2020-12-09 07:34:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:34:10,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:34:10,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:34:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:10,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:34:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:10,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644074996] [2020-12-09 07:34:10,622 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:34:10,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024472506] [2020-12-09 07:34:10,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:34:10,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-09 07:34:10,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960202932] [2020-12-09 07:34:10,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:34:10,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:34:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:34:10,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:34:10,623 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 5 states. [2020-12-09 07:34:10,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:34:10,643 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-12-09 07:34:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:34:10,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 07:34:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:34:10,644 INFO L225 Difference]: With dead ends: 70 [2020-12-09 07:34:10,645 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 07:34:10,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:34:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 07:34:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-12-09 07:34:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 07:34:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-12-09 07:34:10,650 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2020-12-09 07:34:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:34:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-12-09 07:34:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:34:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-12-09 07:34:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 07:34:10,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:10,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:34:10,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:10,853 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1353129295, now seen corresponding path program 1 times [2020-12-09 07:34:10,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:10,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952850969] [2020-12-09 07:34:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:10,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:34:10,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829266872] [2020-12-09 07:34:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:34:10,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 07:34:10,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:34:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:10,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:34:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:34:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952850969] [2020-12-09 07:34:11,029 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:34:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829266872] [2020-12-09 07:34:11,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:34:11,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 07:34:11,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033601762] [2020-12-09 07:34:11,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:34:11,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:34:11,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:34:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:34:11,030 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 8 states. [2020-12-09 07:34:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:34:11,203 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-12-09 07:34:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 07:34:11,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 07:34:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:34:11,204 INFO L225 Difference]: With dead ends: 51 [2020-12-09 07:34:11,204 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 07:34:11,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:34:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 07:34:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-12-09 07:34:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-09 07:34:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-12-09 07:34:11,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2020-12-09 07:34:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:34:11,209 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-12-09 07:34:11,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:34:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-12-09 07:34:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 07:34:11,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:34:11,210 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:34:11,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:11,411 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:34:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:34:11,411 INFO L82 PathProgramCache]: Analyzing trace with hash 681700813, now seen corresponding path program 1 times [2020-12-09 07:34:11,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:34:11,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117495761] [2020-12-09 07:34:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:34:11,419 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:34:11,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136426587] [2020-12-09 07:34:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:34:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:34:11,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:34:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:34:11,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:34:11,486 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:34:11,486 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:34:11,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 07:34:11,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:34:11 BoogieIcfgContainer [2020-12-09 07:34:11,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:34:11,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:34:11,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:34:11,719 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:34:11,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:07" (3/4) ... [2020-12-09 07:34:11,721 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:34:11,753 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8e5d5507-3b3b-415a-8f8b-d5b9f99d1d94/bin/utaipan/witness.graphml [2020-12-09 07:34:11,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:34:11,754 INFO L168 Benchmark]: Toolchain (without parser) took 5236.83 ms. Allocated memory was 142.6 MB in the beginning and 172.0 MB in the end (delta: 29.4 MB). Free memory was 105.8 MB in the beginning and 66.7 MB in the end (delta: 39.0 MB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,755 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 142.6 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:34:11,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.75 ms. Allocated memory is still 142.6 MB. Free memory was 105.6 MB in the beginning and 117.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.52 ms. Allocated memory is still 142.6 MB. Free memory was 117.2 MB in the beginning and 115.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,756 INFO L168 Benchmark]: Boogie Preprocessor took 23.72 ms. Allocated memory is still 142.6 MB. Free memory was 115.1 MB in the beginning and 113.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,757 INFO L168 Benchmark]: RCFGBuilder took 294.35 ms. Allocated memory is still 142.6 MB. Free memory was 113.9 MB in the beginning and 92.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,757 INFO L168 Benchmark]: TraceAbstraction took 4675.06 ms. Allocated memory was 142.6 MB in the beginning and 172.0 MB in the end (delta: 29.4 MB). Free memory was 91.6 MB in the beginning and 69.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,758 INFO L168 Benchmark]: Witness Printer took 34.03 ms. Allocated memory is still 172.0 MB. Free memory was 69.9 MB in the beginning and 66.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:34:11,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 142.6 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.75 ms. Allocated memory is still 142.6 MB. Free memory was 105.6 MB in the beginning and 117.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.52 ms. Allocated memory is still 142.6 MB. Free memory was 117.2 MB in the beginning and 115.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.72 ms. Allocated memory is still 142.6 MB. Free memory was 115.1 MB in the beginning and 113.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 294.35 ms. Allocated memory is still 142.6 MB. Free memory was 113.9 MB in the beginning and 92.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4675.06 ms. Allocated memory was 142.6 MB in the beginning and 172.0 MB in the end (delta: 29.4 MB). Free memory was 91.6 MB in the beginning and 69.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. * Witness Printer took 34.03 ms. Allocated memory is still 172.0 MB. Free memory was 69.9 MB in the beginning and 66.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 209 SDslu, 228 SDs, 0 SdLazy, 175 SolverSat, 94 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 68 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 6430 SizeOfPredicates, 15 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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! Received shutdown request...