./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF --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 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:29,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:29,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:29,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:29,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:29,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:29,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:29,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:29,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:29,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:29,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:29,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:29,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:29,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:29,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:29,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:29,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:29,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:29,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:29,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:29,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:29,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:29,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:29,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:29,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:29,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:29,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:29,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:29,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:29,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:29,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:29,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:29,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:29,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:29,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:29,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:29,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:29,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:29,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:29,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:29,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:29:29,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:29,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:29,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:29,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:29,838 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:29,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:29,838 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:29,839 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:29:29,839 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:29,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:29,841 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:29:29,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:29:29,841 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:29,842 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:29:29,842 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:29:29,842 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:29:29,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:29,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:29:29,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:29:29,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:29:29,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:29,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:29:29,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:29,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:29:29,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:29,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:29:29,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:29:29,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:29,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:29:29,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:29,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:29,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:29,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:29,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:29,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:29:29,851 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:29:29,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:29:29,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:29:29,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:29,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:29,853 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_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2021-11-13 01:29:30,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:30,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:30,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:30,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:30,186 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:30,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-13 01:29:30,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/340928a3b/c59969e3ec804dd095a0c450ab0743a8/FLAG4deb8949a [2021-11-13 01:29:30,972 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:30,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-13 01:29:31,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/340928a3b/c59969e3ec804dd095a0c450ab0743a8/FLAG4deb8949a [2021-11-13 01:29:31,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/340928a3b/c59969e3ec804dd095a0c450ab0743a8 [2021-11-13 01:29:31,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:31,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:31,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:31,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:31,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:31,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:31" (1/1) ... [2021-11-13 01:29:31,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d80080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:31, skipping insertion in model container [2021-11-13 01:29:31,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:31" (1/1) ... [2021-11-13 01:29:31,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:31,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:31,730 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_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-13 01:29:32,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:32,067 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 01:29:32,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@212f7f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:32, skipping insertion in model container [2021-11-13 01:29:32,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:32,068 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:29:32,070 INFO L158 Benchmark]: Toolchain (without parser) took 962.57ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 80.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:29:32,071 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 86.0MB. Free memory is still 42.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:29:32,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.57ms. Allocated memory is still 123.7MB. Free memory was 87.8MB in the beginning and 80.2MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:29:32,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 86.0MB. Free memory is still 42.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.57ms. Allocated memory is still 123.7MB. Free memory was 87.8MB in the beginning and 80.2MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF --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 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:34,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:34,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:34,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:34,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:34,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:34,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:34,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:34,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:34,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:34,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:34,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:34,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:34,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:34,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:34,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:34,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:34,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:34,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:34,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:34,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:34,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:34,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:34,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:34,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:34,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:34,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:34,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:34,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:34,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:34,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:34,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:34,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:34,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:34,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:34,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:34,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:34,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:34,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:34,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:34,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:34,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:29:34,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:34,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:34,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:34,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:34,835 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:34,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:34,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:34,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:34,836 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:34,836 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:34,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:34,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:29:34,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:29:34,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:34,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:29:34,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:34,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:29:34,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:34,839 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:29:34,839 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:29:34,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:29:34,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:29:34,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:34,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:29:34,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:34,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:29:34,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:34,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:34,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:34,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:34,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:29:34,843 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:29:34,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:29:34,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:29:34,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:34,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:34,844 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2021-11-13 01:29:35,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:35,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:35,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:35,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:35,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:35,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-13 01:29:35,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/9ca8ada3d/82a5ff28dcb041c49f4680f90a0978a4/FLAGf8196ab8f [2021-11-13 01:29:36,192 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:36,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-13 01:29:36,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/9ca8ada3d/82a5ff28dcb041c49f4680f90a0978a4/FLAGf8196ab8f [2021-11-13 01:29:36,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/data/9ca8ada3d/82a5ff28dcb041c49f4680f90a0978a4 [2021-11-13 01:29:36,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:36,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:36,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:36,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:36,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:36,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:36" (1/1) ... [2021-11-13 01:29:36,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744592dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:36, skipping insertion in model container [2021-11-13 01:29:36,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:36" (1/1) ... [2021-11-13 01:29:36,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:36,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:37,021 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_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-13 01:29:37,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:37,418 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:29:37,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:37,469 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_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-13 01:29:37,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:37,666 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:29:37,715 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_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-13 01:29:37,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:37,961 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:29:37,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37 WrapperNode [2021-11-13 01:29:37,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:37,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:37,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:29:37,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:29:37,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:38,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:29:38,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:29:38,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:29:38,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:29:38,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:29:38,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:29:38,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:29:38,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (1/1) ... [2021-11-13 01:29:38,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:29:38,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:29:38,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:29:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:29:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 01:29:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 01:29:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:29:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:29:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:29:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:29:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:29:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:29:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:29:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:29:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:29:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:29:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:29:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:29:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:29:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:29:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:29:53,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:29:53,888 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-13 01:29:53,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:53 BoogieIcfgContainer [2021-11-13 01:29:53,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:29:53,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:29:53,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:29:53,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:29:53,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:29:36" (1/3) ... [2021-11-13 01:29:53,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fdf6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:53, skipping insertion in model container [2021-11-13 01:29:53,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37" (2/3) ... [2021-11-13 01:29:53,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fdf6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:53, skipping insertion in model container [2021-11-13 01:29:53,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:53" (3/3) ... [2021-11-13 01:29:53,903 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-2.i [2021-11-13 01:29:53,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:29:53,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:29:53,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:29:53,986 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 [2021-11-13 01:29:53,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:29:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 438 states have (on average 1.7100456621004567) internal successors, (749), 443 states have internal predecessors, (749), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-13 01:29:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 01:29:54,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:54,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:54,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1709343748, now seen corresponding path program 1 times [2021-11-13 01:29:54,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:54,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759400246] [2021-11-13 01:29:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:54,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:54,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:54,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:54,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:29:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:54,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:29:54,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:54,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:54,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:54,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759400246] [2021-11-13 01:29:54,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759400246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:54,496 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:54,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:29:54,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98908302] [2021-11-13 01:29:54,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:54,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:29:54,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:29:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:29:54,543 INFO L87 Difference]: Start difference. First operand has 457 states, 438 states have (on average 1.7100456621004567) internal successors, (749), 443 states have internal predecessors, (749), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:54,672 INFO L93 Difference]: Finished difference Result 912 states and 1560 transitions. [2021-11-13 01:29:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:29:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 01:29:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:54,703 INFO L225 Difference]: With dead ends: 912 [2021-11-13 01:29:54,703 INFO L226 Difference]: Without dead ends: 424 [2021-11-13 01:29:54,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:29:54,716 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:54,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 20.72ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:29:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-13 01:29:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-13 01:29:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 406 states have (on average 1.3251231527093597) internal successors, (538), 411 states have internal predecessors, (538), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:29:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 565 transitions. [2021-11-13 01:29:54,818 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 565 transitions. Word has length 13 [2021-11-13 01:29:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:54,819 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 565 transitions. [2021-11-13 01:29:54,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 565 transitions. [2021-11-13 01:29:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:29:54,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:54,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:54,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 01:29:55,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:55,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash 467454242, now seen corresponding path program 1 times [2021-11-13 01:29:55,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:55,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358758460] [2021-11-13 01:29:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:55,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:55,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:55,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:55,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:29:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:55,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:29:55,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:55,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:55,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:55,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358758460] [2021-11-13 01:29:55,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358758460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:55,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:55,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:29:55,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239364338] [2021-11-13 01:29:55,818 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:55,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:29:55,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:29:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:29:55,821 INFO L87 Difference]: Start difference. First operand 424 states and 565 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:56,117 INFO L93 Difference]: Finished difference Result 670 states and 899 transitions. [2021-11-13 01:29:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:29:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-13 01:29:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:56,125 INFO L225 Difference]: With dead ends: 670 [2021-11-13 01:29:56,125 INFO L226 Difference]: Without dead ends: 428 [2021-11-13 01:29:56,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:29:56,133 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 569 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.22ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:56,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1322 Invalid, 79 Unknown, 0 Unchecked, 14.22ms Time], IncrementalHoareTripleChecker [44 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 201.32ms Time] [2021-11-13 01:29:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-13 01:29:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-11-13 01:29:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 409 states have (on average 1.3031784841075795) internal successors, (533), 414 states have internal predecessors, (533), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:29:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 560 transitions. [2021-11-13 01:29:56,202 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 560 transitions. Word has length 48 [2021-11-13 01:29:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:56,203 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 560 transitions. [2021-11-13 01:29:56,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 560 transitions. [2021-11-13 01:29:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:29:56,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:56,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:56,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:56,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:56,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1867122608, now seen corresponding path program 1 times [2021-11-13 01:29:56,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:56,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573027757] [2021-11-13 01:29:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:56,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:56,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:29:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:56,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:29:56,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:56,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:57,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:57,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573027757] [2021-11-13 01:29:57,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573027757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:57,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:57,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 01:29:57,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984886062] [2021-11-13 01:29:57,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:57,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:29:57,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:29:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:29:57,350 INFO L87 Difference]: Start difference. First operand 427 states and 560 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:57,532 INFO L93 Difference]: Finished difference Result 643 states and 849 transitions. [2021-11-13 01:29:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:29:57,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-13 01:29:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:57,537 INFO L225 Difference]: With dead ends: 643 [2021-11-13 01:29:57,538 INFO L226 Difference]: Without dead ends: 421 [2021-11-13 01:29:57,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:29:57,544 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 270 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.85ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.09ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:57,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2108 Invalid, 68 Unknown, 0 Unchecked, 9.85ms Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 135.09ms Time] [2021-11-13 01:29:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-13 01:29:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-13 01:29:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 403 states have (on average 1.2977667493796525) internal successors, (523), 408 states have internal predecessors, (523), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:29:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 550 transitions. [2021-11-13 01:29:57,601 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 550 transitions. Word has length 48 [2021-11-13 01:29:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:57,602 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 550 transitions. [2021-11-13 01:29:57,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 550 transitions. [2021-11-13 01:29:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:29:57,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:57,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:57,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 01:29:57,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:57,819 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash 725815830, now seen corresponding path program 1 times [2021-11-13 01:29:57,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:57,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579052974] [2021-11-13 01:29:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:57,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:57,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:57,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:29:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:58,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:29:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:58,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:29:58,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:29:58,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:29:58,375 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 01:29:58,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 01:29:58,454 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 01:29:58,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 01:29:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:58,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:58,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:58,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579052974] [2021-11-13 01:29:58,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579052974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:58,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:58,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:29:58,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956969236] [2021-11-13 01:29:58,813 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:58,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:29:58,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:29:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:29:58,815 INFO L87 Difference]: Start difference. First operand 421 states and 550 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:00,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:06,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:08,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:12,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:14,365 INFO L93 Difference]: Finished difference Result 739 states and 967 transitions. [2021-11-13 01:30:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:30:14,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-13 01:30:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:14,371 INFO L225 Difference]: With dead ends: 739 [2021-11-13 01:30:14,372 INFO L226 Difference]: Without dead ends: 496 [2021-11-13 01:30:14,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:30:14,374 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 475 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14989.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.56ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15439.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:14,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1739 Invalid, 466 Unknown, 0 Unchecked, 12.56ms Time], IncrementalHoareTripleChecker [6 Valid, 458 Invalid, 2 Unknown, 0 Unchecked, 15439.73ms Time] [2021-11-13 01:30:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-13 01:30:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 423. [2021-11-13 01:30:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 405 states have (on average 1.2962962962962963) internal successors, (525), 410 states have internal predecessors, (525), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:30:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 552 transitions. [2021-11-13 01:30:14,413 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 552 transitions. Word has length 48 [2021-11-13 01:30:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:14,414 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 552 transitions. [2021-11-13 01:30:14,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 552 transitions. [2021-11-13 01:30:14,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:30:14,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:14,417 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:14,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:14,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:14,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:14,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash 365841096, now seen corresponding path program 1 times [2021-11-13 01:30:14,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:14,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489995941] [2021-11-13 01:30:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:14,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:14,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:14,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:30:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:15,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:15,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:15,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:15,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:15,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489995941] [2021-11-13 01:30:15,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489995941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:15,782 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:15,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:30:15,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590353720] [2021-11-13 01:30:15,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:15,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:15,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:15,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:15,784 INFO L87 Difference]: Start difference. First operand 423 states and 552 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:15,958 INFO L93 Difference]: Finished difference Result 935 states and 1224 transitions. [2021-11-13 01:30:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 01:30:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:15,963 INFO L225 Difference]: With dead ends: 935 [2021-11-13 01:30:15,964 INFO L226 Difference]: Without dead ends: 516 [2021-11-13 01:30:15,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:15,966 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 488 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.62ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.01ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:15,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1525 Invalid, 69 Unknown, 0 Unchecked, 6.62ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 124.01ms Time] [2021-11-13 01:30:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-13 01:30:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 426. [2021-11-13 01:30:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 408 states have (on average 1.2745098039215685) internal successors, (520), 413 states have internal predecessors, (520), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:30:15,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 547 transitions. [2021-11-13 01:30:15,994 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 547 transitions. Word has length 101 [2021-11-13 01:30:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:15,994 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 547 transitions. [2021-11-13 01:30:15,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 547 transitions. [2021-11-13 01:30:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:30:15,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:15,997 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:16,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:16,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:16,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1817491628, now seen corresponding path program 1 times [2021-11-13 01:30:16,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:16,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59179382] [2021-11-13 01:30:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:16,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:16,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:16,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:30:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:16,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:16,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:17,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:17,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:17,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59179382] [2021-11-13 01:30:17,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59179382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:17,755 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:17,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:30:17,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972851781] [2021-11-13 01:30:17,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:17,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:17,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:17,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:17,758 INFO L87 Difference]: Start difference. First operand 426 states and 547 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:18,337 INFO L93 Difference]: Finished difference Result 1075 states and 1384 transitions. [2021-11-13 01:30:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:18,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 01:30:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:18,344 INFO L225 Difference]: With dead ends: 1075 [2021-11-13 01:30:18,345 INFO L226 Difference]: Without dead ends: 653 [2021-11-13 01:30:18,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:18,347 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 246 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 509.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 541.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:18,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1053 Invalid, 22 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 541.83ms Time] [2021-11-13 01:30:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-13 01:30:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2021-11-13 01:30:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 626 states have (on average 1.2747603833865815) internal successors, (798), 631 states have internal predecessors, (798), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 01:30:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 835 transitions. [2021-11-13 01:30:18,384 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 835 transitions. Word has length 101 [2021-11-13 01:30:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:18,385 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 835 transitions. [2021-11-13 01:30:18,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 835 transitions. [2021-11-13 01:30:18,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 01:30:18,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:18,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:18,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 01:30:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:18,603 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash -193458954, now seen corresponding path program 1 times [2021-11-13 01:30:18,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:18,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724256516] [2021-11-13 01:30:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:18,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:18,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:18,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:30:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:19,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:19,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:30:19,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724256516] [2021-11-13 01:30:19,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724256516] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:30:19,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:30:19,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-13 01:30:19,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832417499] [2021-11-13 01:30:19,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:19,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:19,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:19,748 INFO L87 Difference]: Start difference. First operand 649 states and 835 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:30:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:19,851 INFO L93 Difference]: Finished difference Result 1253 states and 1619 transitions. [2021-11-13 01:30:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 116 [2021-11-13 01:30:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:19,860 INFO L225 Difference]: With dead ends: 1253 [2021-11-13 01:30:19,860 INFO L226 Difference]: Without dead ends: 652 [2021-11-13 01:30:19,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:30:19,863 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 2 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:19,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1598 Invalid, 21 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 54.93ms Time] [2021-11-13 01:30:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-13 01:30:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-13 01:30:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 628 states have (on average 1.2754777070063694) internal successors, (801), 634 states have internal predecessors, (801), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 01:30:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 841 transitions. [2021-11-13 01:30:19,909 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 841 transitions. Word has length 116 [2021-11-13 01:30:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:19,912 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 841 transitions. [2021-11-13 01:30:19,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:30:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 841 transitions. [2021-11-13 01:30:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 01:30:19,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:19,917 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:19,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:20,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:20,139 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 99255444, now seen corresponding path program 1 times [2021-11-13 01:30:20,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:20,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150047539] [2021-11-13 01:30:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:20,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:20,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:20,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:20,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:30:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:30:20,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:30:21,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:21,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150047539] [2021-11-13 01:30:21,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150047539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:21,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1488911132] [2021-11-13 01:30:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:21,361 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:21,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:30:21,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:30:21,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 01:30:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:22,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:22,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:30:22,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:30:22,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1488911132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:22,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395616692] [2021-11-13 01:30:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:22,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:30:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:30:22,739 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:30:22,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 01:30:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:23,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:30:23,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:30:23,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395616692] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:23,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:30:23,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-13 01:30:23,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397430866] [2021-11-13 01:30:23,875 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:30:23,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:30:23,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:30:23,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:30:23,877 INFO L87 Difference]: Start difference. First operand 652 states and 841 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:30:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:24,400 INFO L93 Difference]: Finished difference Result 1271 states and 1657 transitions. [2021-11-13 01:30:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:30:24,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 118 [2021-11-13 01:30:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:24,407 INFO L225 Difference]: With dead ends: 1271 [2021-11-13 01:30:24,408 INFO L226 Difference]: Without dead ends: 667 [2021-11-13 01:30:24,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:30:24,411 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 56 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 221.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:24,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 2635 Invalid, 143 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [48 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 270.91ms Time] [2021-11-13 01:30:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-13 01:30:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2021-11-13 01:30:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 638 states have (on average 1.2836990595611286) internal successors, (819), 644 states have internal predecessors, (819), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 01:30:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 859 transitions. [2021-11-13 01:30:24,450 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 859 transitions. Word has length 118 [2021-11-13 01:30:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:24,450 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 859 transitions. [2021-11-13 01:30:24,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:30:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 859 transitions. [2021-11-13 01:30:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 01:30:24,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:24,453 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:24,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:24,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:24,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:25,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:25,070 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1023145078, now seen corresponding path program 2 times [2021-11-13 01:30:25,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:25,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902905881] [2021-11-13 01:30:25,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:30:25,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:25,074 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:25,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:30:25,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:30:25,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:30:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:30:25,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 01:30:26,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:30:26,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:26,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902905881] [2021-11-13 01:30:26,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902905881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:26,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [627340486] [2021-11-13 01:30:26,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:30:26,533 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:26,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:30:26,534 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:30:26,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 01:30:27,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:30:27,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:30:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:30:27,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 01:30:27,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:30:27,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [627340486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:27,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459200037] [2021-11-13 01:30:27,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:30:27,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:30:27,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:30:27,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:30:27,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 01:30:28,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:30:28,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:30:28,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:30:28,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 01:30:28,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:30:29,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459200037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:29,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:30:29,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-13 01:30:29,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889900512] [2021-11-13 01:30:29,239 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:30:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:30:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:30:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:30:29,242 INFO L87 Difference]: Start difference. First operand 663 states and 859 transitions. Second operand has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 01:30:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:30,593 INFO L93 Difference]: Finished difference Result 1297 states and 1696 transitions. [2021-11-13 01:30:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 01:30:30,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-11-13 01:30:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:30,602 INFO L225 Difference]: With dead ends: 1297 [2021-11-13 01:30:30,602 INFO L226 Difference]: Without dead ends: 676 [2021-11-13 01:30:30,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:30:30,607 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 91 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 520.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 603.30ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:30,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3203 Invalid, 316 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [84 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 603.30ms Time] [2021-11-13 01:30:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-13 01:30:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 670. [2021-11-13 01:30:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 645 states have (on average 1.2806201550387597) internal successors, (826), 651 states have internal predecessors, (826), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 01:30:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 866 transitions. [2021-11-13 01:30:30,645 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 866 transitions. Word has length 124 [2021-11-13 01:30:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:30,646 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 866 transitions. [2021-11-13 01:30:30,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 01:30:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 866 transitions. [2021-11-13 01:30:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 01:30:30,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:30,649 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:30,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:30,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:31,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:31,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:31,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash -83749132, now seen corresponding path program 3 times [2021-11-13 01:30:31,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:31,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394436713] [2021-11-13 01:30:31,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:30:31,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:31,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:31,284 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:31,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229cf38f-1e6b-4f01-9cd5-20ad99777ad7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:30:32,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 01:30:32,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:30:32,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:30:32,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:32,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:32,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:32,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:32,330 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 01:30:32,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 01:30:32,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 01:30:32,543 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 01:30:32,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17