./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:38:23,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:38:23,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:38:23,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:38:23,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:38:23,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:38:23,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:38:23,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:38:23,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:38:23,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:38:23,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:38:23,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:38:23,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:38:23,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:38:23,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:38:23,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:38:23,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:38:23,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:38:23,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:38:23,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:38:23,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:38:23,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:38:23,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:38:23,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:38:23,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:38:23,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:38:23,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:38:23,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:38:23,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:38:23,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:38:23,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:38:23,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:38:23,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:38:23,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:38:23,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:38:23,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:38:23,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:38:23,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:38:23,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:38:23,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:38:23,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:38:23,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:38:23,730 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:38:23,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:38:23,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:38:23,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:38:23,732 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:38:23,733 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:38:23,733 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:38:23,733 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:38:23,739 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:38:23,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:38:23,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:38:23,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:38:23,741 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:38:23,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:38:23,742 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:38:23,742 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:38:23,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:38:23,743 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:38:23,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:38:23,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:38:23,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:38:23,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:38:23,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:38:23,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:38:23,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:38:23,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:38:23,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:38:23,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:38:23,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:38:23,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:38:23,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:38:23,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:38:23,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:38:23,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:38:23,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:38:23,748 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:38:23,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:38:23,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:38:23,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:38:23,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:38:23,749 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_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-19 14:38:24,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:38:24,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:38:24,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:38:24,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:38:24,061 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:38:24,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-19 14:38:24,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/337711475/c5acd5a8c1de4c6c8b4a214ff6c7f640/FLAG9aaac1ed1 [2021-11-19 14:38:24,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:38:24,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-19 14:38:24,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/337711475/c5acd5a8c1de4c6c8b4a214ff6c7f640/FLAG9aaac1ed1 [2021-11-19 14:38:24,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/337711475/c5acd5a8c1de4c6c8b4a214ff6c7f640 [2021-11-19 14:38:24,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:38:24,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:38:24,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:24,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:38:24,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:38:24,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:24" (1/1) ... [2021-11-19 14:38:24,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364fed6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:24, skipping insertion in model container [2021-11-19 14:38:24,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:24" (1/1) ... [2021-11-19 14:38:25,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:38:25,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:38:25,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-19 14:38:25,607 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:25,616 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) [2021-11-19 14:38:25,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@593c60e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:25, skipping insertion in model container [2021-11-19 14:38:25,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:25,617 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:38:25,619 INFO L158 Benchmark]: Toolchain (without parser) took 638.54ms. Allocated memory is still 119.5MB. Free memory was 77.3MB in the beginning and 87.0MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:38:25,620 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:38:25,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.88ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 87.0MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:38:25,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.88ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 87.0MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:38:27,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:38:27,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:38:27,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:38:27,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:38:27,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:38:27,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:38:27,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:38:27,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:38:27,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:38:27,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:38:27,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:38:27,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:38:27,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:38:27,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:38:27,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:38:27,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:38:27,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:38:27,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:38:27,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:38:27,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:38:27,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:38:27,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:38:28,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:38:28,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:38:28,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:38:28,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:38:28,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:38:28,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:38:28,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:38:28,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:38:28,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:38:28,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:38:28,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:38:28,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:38:28,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:38:28,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:38:28,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:38:28,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:38:28,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:38:28,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:38:28,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:38:28,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:38:28,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:38:28,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:38:28,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:38:28,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:38:28,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:38:28,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:38:28,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:38:28,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:38:28,072 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:38:28,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:38:28,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:38:28,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:38:28,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:38:28,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:38:28,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:38:28,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:38:28,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:38:28,076 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:38:28,076 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:38:28,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:38:28,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:38:28,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:38:28,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:38:28,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:38:28,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:38:28,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:38:28,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:38:28,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:38:28,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:38:28,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:38:28,079 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:38:28,080 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:28,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:38:28,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:38:28,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:38:28,081 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_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-19 14:38:28,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:38:28,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:38:28,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:38:28,471 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:38:28,473 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:38:28,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-19 14:38:28,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/fdd465a12/dad9f4b1fe7445cb93c9cdc0aef8696a/FLAG5a26c88d6 [2021-11-19 14:38:29,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:38:29,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-19 14:38:29,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/fdd465a12/dad9f4b1fe7445cb93c9cdc0aef8696a/FLAG5a26c88d6 [2021-11-19 14:38:29,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/data/fdd465a12/dad9f4b1fe7445cb93c9cdc0aef8696a [2021-11-19 14:38:29,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:38:29,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:38:29,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:29,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:38:29,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:38:29,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:29" (1/1) ... [2021-11-19 14:38:29,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cbe27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:29, skipping insertion in model container [2021-11-19 14:38:29,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:29" (1/1) ... [2021-11-19 14:38:29,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:38:29,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:38:30,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-19 14:38:30,145 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:30,158 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:38:30,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:38:30,193 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-19 14:38:30,269 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:30,288 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:38:30,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-19 14:38:30,377 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:30,426 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:38:30,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30 WrapperNode [2021-11-19 14:38:30,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:30,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:38:30,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:38:30,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:38:30,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,524 INFO L137 Inliner]: procedures = 180, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 622 [2021-11-19 14:38:30,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:38:30,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:38:30,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:38:30,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:38:30,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:38:30,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:38:30,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:38:30,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:38:30,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (1/1) ... [2021-11-19 14:38:30,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:38:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:38:30,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:38:30,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:38:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:38:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:38:30,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:38:30,721 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:38:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:38:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:38:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:38:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:38:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:38:30,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:38:30,872 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:38:30,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:38:36,037 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:38:36,045 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:38:36,046 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-19 14:38:36,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:38:36 BoogieIcfgContainer [2021-11-19 14:38:36,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:38:36,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:38:36,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:38:36,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:38:36,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:38:29" (1/3) ... [2021-11-19 14:38:36,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c206e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:38:36, skipping insertion in model container [2021-11-19 14:38:36,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:30" (2/3) ... [2021-11-19 14:38:36,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c206e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:38:36, skipping insertion in model container [2021-11-19 14:38:36,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:38:36" (3/3) ... [2021-11-19 14:38:36,056 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2021-11-19 14:38:36,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:38:36,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:38:36,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:38:36,116 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:38:36,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:38:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 14:38:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:38:36,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:36,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:36,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash -388532060, now seen corresponding path program 1 times [2021-11-19 14:38:36,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:36,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40054052] [2021-11-19 14:38:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:36,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:36,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:36,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:38:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:36,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:38:36,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:38:36,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:38:36,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:36,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40054052] [2021-11-19 14:38:36,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40054052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:36,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:36,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:38:36,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58372795] [2021-11-19 14:38:36,456 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:36,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:38:36,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:38:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:38:36,489 INFO L87 Difference]: Start difference. First operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:36,730 INFO L93 Difference]: Finished difference Result 342 states and 582 transitions. [2021-11-19 14:38:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:38:36,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 14:38:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:36,749 INFO L225 Difference]: With dead ends: 342 [2021-11-19 14:38:36,756 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 14:38:36,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:38:36,768 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 214 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:36,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 404 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:38:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 14:38:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-19 14:38:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 203 states have internal predecessors, (254), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:38:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 286 transitions. [2021-11-19 14:38:36,852 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 286 transitions. Word has length 10 [2021-11-19 14:38:36,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:36,853 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 286 transitions. [2021-11-19 14:38:36,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 286 transitions. [2021-11-19 14:38:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:38:36,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:36,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:36,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:37,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:37,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash -557342268, now seen corresponding path program 1 times [2021-11-19 14:38:37,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:37,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877800727] [2021-11-19 14:38:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:37,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:37,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:37,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:37,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:38:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:37,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:38:37,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:38:37,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:38:38,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:38,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877800727] [2021-11-19 14:38:38,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877800727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:38,142 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:38,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:38:38,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631917839] [2021-11-19 14:38:38,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:38,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:38:38,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:38:38,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:38:38,145 INFO L87 Difference]: Start difference. First operand 212 states and 286 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:38,324 INFO L93 Difference]: Finished difference Result 424 states and 578 transitions. [2021-11-19 14:38:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:38:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:38:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:38,331 INFO L225 Difference]: With dead ends: 424 [2021-11-19 14:38:38,331 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 14:38:38,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:38:38,338 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 235 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:38,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 313 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:38:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 14:38:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-19 14:38:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 209 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:38:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2021-11-19 14:38:38,384 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 112 [2021-11-19 14:38:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:38,384 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2021-11-19 14:38:38,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2021-11-19 14:38:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:38:38,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:38,395 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:38,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:38,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:38,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash -528462268, now seen corresponding path program 1 times [2021-11-19 14:38:38,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:38,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626695698] [2021-11-19 14:38:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:38,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:38,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:38,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:38:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:38,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:38:38,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:38:39,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:38:40,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:40,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626695698] [2021-11-19 14:38:40,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626695698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:40,021 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:40,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:38:40,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163783596] [2021-11-19 14:38:40,021 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:40,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:38:40,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:38:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:38:40,023 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:40,382 INFO L93 Difference]: Finished difference Result 381 states and 490 transitions. [2021-11-19 14:38:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:38:40,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:38:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:40,395 INFO L225 Difference]: With dead ends: 381 [2021-11-19 14:38:40,395 INFO L226 Difference]: Without dead ends: 216 [2021-11-19 14:38:40,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:38:40,397 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:40,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:38:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-19 14:38:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-19 14:38:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 207 states have internal predecessors, (241), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:38:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2021-11-19 14:38:40,414 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 112 [2021-11-19 14:38:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:40,414 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2021-11-19 14:38:40,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2021-11-19 14:38:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 14:38:40,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:40,418 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 14:38:40,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:40,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:40,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1997933147, now seen corresponding path program 1 times [2021-11-19 14:38:40,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:40,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222240281] [2021-11-19 14:38:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:40,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:40,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:40,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:38:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:41,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:38:41,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 14:38:41,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:38:41,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:41,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222240281] [2021-11-19 14:38:41,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222240281] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:38:41,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:38:41,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 14:38:41,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756192555] [2021-11-19 14:38:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:41,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:38:41,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:38:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:38:41,708 INFO L87 Difference]: Start difference. First operand 216 states and 273 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:38:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:41,773 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-11-19 14:38:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:38:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 127 [2021-11-19 14:38:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:41,777 INFO L225 Difference]: With dead ends: 388 [2021-11-19 14:38:41,777 INFO L226 Difference]: Without dead ends: 219 [2021-11-19 14:38:41,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:38:41,786 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:41,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:38:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-19 14:38:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-19 14:38:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 210 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-19 14:38:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2021-11-19 14:38:41,815 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 127 [2021-11-19 14:38:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2021-11-19 14:38:41,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:38:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2021-11-19 14:38:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 14:38:41,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:41,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 14:38:41,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:42,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:42,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1311171193, now seen corresponding path program 1 times [2021-11-19 14:38:42,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:42,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836361056] [2021-11-19 14:38:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:42,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:42,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:42,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:38:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:42,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:38:42,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:38:42,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:38:43,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:43,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836361056] [2021-11-19 14:38:43,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836361056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:43,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [92047916] [2021-11-19 14:38:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:43,052 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:43,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:38:43,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:38:43,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 14:38:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:43,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:38:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:38:43,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:38:44,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [92047916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:44,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136873009] [2021-11-19 14:38:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:44,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:38:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:38:44,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:38:44,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 14:38:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:44,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:38:44,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:38:45,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:38:45,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136873009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:45,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:38:45,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-19 14:38:45,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558231202] [2021-11-19 14:38:45,667 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:38:45,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:38:45,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:38:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:38:45,670 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:38:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:48,197 INFO L93 Difference]: Finished difference Result 762 states and 987 transitions. [2021-11-19 14:38:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:38:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 129 [2021-11-19 14:38:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:48,204 INFO L225 Difference]: With dead ends: 762 [2021-11-19 14:38:48,204 INFO L226 Difference]: Without dead ends: 590 [2021-11-19 14:38:48,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:38:48,206 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 900 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:48,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2701 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:38:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-19 14:38:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2021-11-19 14:38:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 555 states have (on average 1.2072072072072073) internal successors, (670), 566 states have internal predecessors, (670), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-19 14:38:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 732 transitions. [2021-11-19 14:38:48,238 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 732 transitions. Word has length 129 [2021-11-19 14:38:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:48,238 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 732 transitions. [2021-11-19 14:38:48,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:38:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 732 transitions. [2021-11-19 14:38:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-19 14:38:48,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:48,244 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2021-11-19 14:38:48,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:48,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:48,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:48,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:48,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1182299, now seen corresponding path program 2 times [2021-11-19 14:38:48,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:48,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455157803] [2021-11-19 14:38:48,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:38:48,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:48,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:48,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:38:49,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:38:49,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:38:49,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:38:49,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-19 14:38:50,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-19 14:38:51,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:51,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455157803] [2021-11-19 14:38:51,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455157803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:51,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1477918990] [2021-11-19 14:38:51,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:38:51,402 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:38:51,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:38:51,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 14:38:52,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:38:52,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:38:52,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:38:52,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-19 14:38:52,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-19 14:38:53,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1477918990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:53,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32988946] [2021-11-19 14:38:53,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:38:53,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:38:53,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:38:53,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:38:53,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 14:38:54,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:38:54,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:38:54,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:38:54,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-19 14:38:55,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-19 14:38:55,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32988946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:55,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:38:55,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2021-11-19 14:38:55,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894683639] [2021-11-19 14:38:55,943 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:38:55,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:38:55,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:38:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:38:55,946 INFO L87 Difference]: Start difference. First operand 588 states and 732 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:38:57,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:57,349 INFO L93 Difference]: Finished difference Result 1155 states and 1509 transitions. [2021-11-19 14:38:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 14:38:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 337 [2021-11-19 14:38:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:57,355 INFO L225 Difference]: With dead ends: 1155 [2021-11-19 14:38:57,355 INFO L226 Difference]: Without dead ends: 608 [2021-11-19 14:38:57,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1998 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 14:38:57,359 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 147 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:57,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1400 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:38:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-19 14:38:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 600. [2021-11-19 14:38:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 567 states have (on average 1.2098765432098766) internal successors, (686), 578 states have internal predecessors, (686), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-19 14:38:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 748 transitions. [2021-11-19 14:38:57,394 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 748 transitions. Word has length 337 [2021-11-19 14:38:57,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:57,395 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 748 transitions. [2021-11-19 14:38:57,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:38:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 748 transitions. [2021-11-19 14:38:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-19 14:38:57,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:57,403 INFO L514 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2021-11-19 14:38:57,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:57,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-19 14:38:57,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:58,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:58,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:58,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1718210971, now seen corresponding path program 3 times [2021-11-19 14:38:58,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:58,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21552442] [2021-11-19 14:38:58,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:38:58,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:58,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:58,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:58,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14b91ee-9ac9-4ef0-be5a-6e787d1f76f8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process