./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:56:56,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:56:56,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:56:56,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:56:56,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:56:56,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:56:56,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:56:56,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:56:56,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:56:56,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:56:56,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:56:56,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:56:56,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:56:56,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:56:56,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:56:56,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:56:56,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:56:56,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:56:56,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:56:56,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:56:56,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:56:56,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:56:56,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:56:56,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:56:56,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:56:56,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:56:56,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:56:56,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:56:56,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:56:56,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:56:56,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:56:56,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:56:56,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:56:56,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:56:56,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:56:56,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:56:56,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:56:56,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:56:56,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:56:56,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:56:56,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:56:56,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:56:56,817 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:56:56,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:56:56,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:56:56,820 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:56:56,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:56:56,820 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:56:56,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:56:56,821 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:56:56,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:56:56,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:56:56,828 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:56:56,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:56:56,829 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:56:56,829 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:56:56,829 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:56:56,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:56:56,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:56:56,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:56:56,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:56:56,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:56:56,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:56:56,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:56:56,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:56:56,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:56:56,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:56:56,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:56:56,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:56:56,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:56:56,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:56:56,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:56:56,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:56:56,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:56:56,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:56:56,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:56:56,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:56:56,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:56:56,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:56:56,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:56:56,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:56:56,837 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_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2021-10-24 10:56:57,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:56:57,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:56:57,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:56:57,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:56:57,157 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:56:57,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-24 10:56:57,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/cec4fa2cd/5c7bacbe61b84fb6b504696ffdf20023/FLAG1ade0efd5 [2021-10-24 10:56:57,770 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:56:57,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-24 10:56:57,784 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/cec4fa2cd/5c7bacbe61b84fb6b504696ffdf20023/FLAG1ade0efd5 [2021-10-24 10:56:58,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/cec4fa2cd/5c7bacbe61b84fb6b504696ffdf20023 [2021-10-24 10:56:58,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:56:58,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:56:58,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:56:58,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:56:58,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:56:58,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:56:58" (1/1) ... [2021-10-24 10:56:58,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89b0a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:58, skipping insertion in model container [2021-10-24 10:56:58,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:56:58" (1/1) ... [2021-10-24 10:56:58,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:56:58,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:56:58,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-24 10:56:58,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:56:58,474 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) [2021-10-24 10:56:58,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cc210f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:58, skipping insertion in model container [2021-10-24 10:56:58,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:56:58,475 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:56:58,477 INFO L168 Benchmark]: Toolchain (without parser) took 383.50 ms. Allocated memory is still 119.5 MB. Free memory was 83.3 MB in the beginning and 91.0 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:58,478 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory is still 29.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:56:58,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.84 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 91.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:58,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory is still 29.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.84 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 91.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 179]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:57:00,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:57:00,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:57:00,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:57:00,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:57:00,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:57:00,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:57:00,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:57:00,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:57:00,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:57:00,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:57:00,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:57:00,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:57:00,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:57:00,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:57:00,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:57:00,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:57:00,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:57:00,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:57:00,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:57:00,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:57:00,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:57:00,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:57:00,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:57:00,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:57:00,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:57:00,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:57:00,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:57:00,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:57:00,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:57:00,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:57:00,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:57:00,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:57:00,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:57:00,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:57:00,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:57:00,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:57:00,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:57:00,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:57:00,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:57:00,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:57:00,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:57:00,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:57:00,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:57:00,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:57:00,941 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:57:00,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:57:00,942 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:57:00,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:57:00,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:57:00,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:57:00,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:57:00,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:57:00,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:57:00,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:57:00,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:57:00,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:57:00,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:57:00,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:57:00,947 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:57:00,947 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:57:00,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:57:00,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:57:00,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:57:00,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:57:00,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:57:00,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:57:00,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:57:00,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:00,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:57:00,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:57:00,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:57:00,950 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:57:00,950 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:57:00,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:57:00,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:57:00,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:57:00,951 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_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2021-10-24 10:57:01,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:57:01,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:57:01,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:57:01,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:57:01,455 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:57:01,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-24 10:57:01,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/37f39c4c9/ce4459f86d79424f8c1c63c0680b95dc/FLAG0407776f9 [2021-10-24 10:57:02,198 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:57:02,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-24 10:57:02,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/37f39c4c9/ce4459f86d79424f8c1c63c0680b95dc/FLAG0407776f9 [2021-10-24 10:57:02,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/data/37f39c4c9/ce4459f86d79424f8c1c63c0680b95dc [2021-10-24 10:57:02,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:57:02,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:57:02,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:02,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:57:02,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:57:02,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:02" (1/1) ... [2021-10-24 10:57:02,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bd64f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:02, skipping insertion in model container [2021-10-24 10:57:02,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:02" (1/1) ... [2021-10-24 10:57:02,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:57:02,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:57:02,968 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-24 10:57:02,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:03,000 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:57:03,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:57:03,107 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-24 10:57:03,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:03,115 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:57:03,180 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-24 10:57:03,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:03,204 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:57:03,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03 WrapperNode [2021-10-24 10:57:03,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:03,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:03,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:57:03,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:57:03,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:03,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:57:03,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:57:03,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:57:03,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:57:03,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:57:03,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:57:03,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:57:03,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (1/1) ... [2021-10-24 10:57:03,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:57:03,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:57:03,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:57:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:57:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:57:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:57:03,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:57:05,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:57:05,729 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-10-24 10:57:05,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:05 BoogieIcfgContainer [2021-10-24 10:57:05,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:57:05,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:57:05,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:57:05,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:57:05,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:57:02" (1/3) ... [2021-10-24 10:57:05,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de910c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:05, skipping insertion in model container [2021-10-24 10:57:05,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:03" (2/3) ... [2021-10-24 10:57:05,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de910c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:05, skipping insertion in model container [2021-10-24 10:57:05,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:05" (3/3) ... [2021-10-24 10:57:05,740 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2021-10-24 10:57:05,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:57:05,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:57:05,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:57:05,802 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 [2021-10-24 10:57:05,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:57:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:57:05,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:05,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:05,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1480559057, now seen corresponding path program 1 times [2021-10-24 10:57:05,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:05,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004631806] [2021-10-24 10:57:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:05,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:05,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:05,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:05,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:57:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:06,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:57:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:06,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:06,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:06,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004631806] [2021-10-24 10:57:06,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004631806] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:06,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:06,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:57:06,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557472465] [2021-10-24 10:57:06,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:57:06,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:57:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:57:06,221 INFO L87 Difference]: Start difference. First operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:06,246 INFO L93 Difference]: Finished difference Result 161 states and 246 transitions. [2021-10-24 10:57:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:57:06,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-24 10:57:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:06,258 INFO L225 Difference]: With dead ends: 161 [2021-10-24 10:57:06,258 INFO L226 Difference]: Without dead ends: 80 [2021-10-24 10:57:06,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:57:06,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-24 10:57:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-24 10:57:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 79 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2021-10-24 10:57:06,312 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 18 [2021-10-24 10:57:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:06,312 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2021-10-24 10:57:06,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2021-10-24 10:57:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 10:57:06,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:06,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:06,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:06,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:06,528 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1228794243, now seen corresponding path program 1 times [2021-10-24 10:57:06,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:06,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787126393] [2021-10-24 10:57:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:06,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:06,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:57:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:06,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:57:06,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:06,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:06,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:06,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787126393] [2021-10-24 10:57:06,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787126393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:06,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:06,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:57:06,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042504657] [2021-10-24 10:57:06,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:57:06,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:57:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:06,907 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:06,941 INFO L93 Difference]: Finished difference Result 80 states and 115 transitions. [2021-10-24 10:57:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:57:06,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-24 10:57:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:06,944 INFO L225 Difference]: With dead ends: 80 [2021-10-24 10:57:06,944 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 10:57:06,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 10:57:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-24 10:57:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2021-10-24 10:57:06,959 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2021-10-24 10:57:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:06,959 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2021-10-24 10:57:06,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2021-10-24 10:57:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 10:57:06,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:06,961 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:06,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:07,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:07,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:07,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1219405376, now seen corresponding path program 1 times [2021-10-24 10:57:07,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:07,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431365004] [2021-10-24 10:57:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:07,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:07,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:07,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:07,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:57:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:07,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:57:07,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:07,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:07,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:07,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431365004] [2021-10-24 10:57:07,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431365004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:07,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:07,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:57:07,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300587598] [2021-10-24 10:57:07,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:57:07,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:57:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:07,551 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:07,625 INFO L93 Difference]: Finished difference Result 124 states and 184 transitions. [2021-10-24 10:57:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:57:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-24 10:57:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:07,630 INFO L225 Difference]: With dead ends: 124 [2021-10-24 10:57:07,631 INFO L226 Difference]: Without dead ends: 93 [2021-10-24 10:57:07,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-24 10:57:07,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 58. [2021-10-24 10:57:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 57 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2021-10-24 10:57:07,655 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 24 [2021-10-24 10:57:07,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:07,655 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2021-10-24 10:57:07,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:07,656 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2021-10-24 10:57:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:57:07,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:07,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:07,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:07,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:07,873 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 999444121, now seen corresponding path program 1 times [2021-10-24 10:57:07,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:07,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839901613] [2021-10-24 10:57:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:07,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:07,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:07,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:07,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:57:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:08,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:57:08,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:08,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:08,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:08,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839901613] [2021-10-24 10:57:08,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839901613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:08,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:08,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:57:08,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517192708] [2021-10-24 10:57:08,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:57:08,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:57:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:57:08,231 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:08,281 INFO L93 Difference]: Finished difference Result 131 states and 195 transitions. [2021-10-24 10:57:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:57:08,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 10:57:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:08,283 INFO L225 Difference]: With dead ends: 131 [2021-10-24 10:57:08,283 INFO L226 Difference]: Without dead ends: 80 [2021-10-24 10:57:08,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:57:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-24 10:57:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-24 10:57:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2021-10-24 10:57:08,294 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 25 [2021-10-24 10:57:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:08,295 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2021-10-24 10:57:08,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2021-10-24 10:57:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:57:08,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:08,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:08,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:08,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:08,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:08,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1239284745, now seen corresponding path program 1 times [2021-10-24 10:57:08,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:08,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452690593] [2021-10-24 10:57:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:08,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:08,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:08,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:08,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:57:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:08,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:57:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:08,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:08,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:08,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452690593] [2021-10-24 10:57:08,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452690593] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:08,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:08,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:57:08,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811624777] [2021-10-24 10:57:08,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:08,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:08,971 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:09,073 INFO L93 Difference]: Finished difference Result 361 states and 530 transitions. [2021-10-24 10:57:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:57:09,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 10:57:09,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:09,078 INFO L225 Difference]: With dead ends: 361 [2021-10-24 10:57:09,078 INFO L226 Difference]: Without dead ends: 290 [2021-10-24 10:57:09,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:57:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-24 10:57:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 138. [2021-10-24 10:57:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4233576642335766) internal successors, (195), 137 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 195 transitions. [2021-10-24 10:57:09,123 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 195 transitions. Word has length 27 [2021-10-24 10:57:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:09,124 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 195 transitions. [2021-10-24 10:57:09,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 195 transitions. [2021-10-24 10:57:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 10:57:09,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:09,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:09,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-24 10:57:09,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:09,342 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:09,342 INFO L82 PathProgramCache]: Analyzing trace with hash -194860415, now seen corresponding path program 1 times [2021-10-24 10:57:09,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:09,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909587474] [2021-10-24 10:57:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:09,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:09,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:09,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:57:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:09,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:57:09,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:09,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:09,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:09,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909587474] [2021-10-24 10:57:09,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909587474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:09,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:09,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:57:09,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206526587] [2021-10-24 10:57:09,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:09,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:09,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:09,789 INFO L87 Difference]: Start difference. First operand 138 states and 195 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:09,970 INFO L93 Difference]: Finished difference Result 499 states and 711 transitions. [2021-10-24 10:57:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 10:57:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 10:57:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:09,973 INFO L225 Difference]: With dead ends: 499 [2021-10-24 10:57:09,973 INFO L226 Difference]: Without dead ends: 368 [2021-10-24 10:57:09,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:57:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-24 10:57:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 136. [2021-10-24 10:57:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4) internal successors, (189), 135 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2021-10-24 10:57:09,998 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 28 [2021-10-24 10:57:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:09,998 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2021-10-24 10:57:09,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2021-10-24 10:57:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 10:57:10,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:10,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:10,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:10,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:10,215 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:10,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1409937664, now seen corresponding path program 1 times [2021-10-24 10:57:10,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:10,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890381351] [2021-10-24 10:57:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:10,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:10,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:10,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:57:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:10,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:57:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:10,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:10,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:10,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890381351] [2021-10-24 10:57:10,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890381351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:10,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:10,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:57:10,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052473317] [2021-10-24 10:57:10,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:10,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:10,645 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:10,733 INFO L93 Difference]: Finished difference Result 401 states and 556 transitions. [2021-10-24 10:57:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:57:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 10:57:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:10,738 INFO L225 Difference]: With dead ends: 401 [2021-10-24 10:57:10,738 INFO L226 Difference]: Without dead ends: 272 [2021-10-24 10:57:10,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:57:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-24 10:57:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 142. [2021-10-24 10:57:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 141 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2021-10-24 10:57:10,761 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 32 [2021-10-24 10:57:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:10,761 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2021-10-24 10:57:10,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:10,762 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2021-10-24 10:57:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 10:57:10,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:10,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:10,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:10,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:10,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2111002242, now seen corresponding path program 1 times [2021-10-24 10:57:10,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:10,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454679187] [2021-10-24 10:57:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:10,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:10,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:10,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:10,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:57:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:11,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:57:11,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:11,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:11,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:11,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454679187] [2021-10-24 10:57:11,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454679187] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:11,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:11,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:57:11,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808595419] [2021-10-24 10:57:11,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:57:11,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:57:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:57:11,445 INFO L87 Difference]: Start difference. First operand 142 states and 195 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:11,525 INFO L93 Difference]: Finished difference Result 435 states and 595 transitions. [2021-10-24 10:57:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:57:11,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 10:57:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:11,528 INFO L225 Difference]: With dead ends: 435 [2021-10-24 10:57:11,528 INFO L226 Difference]: Without dead ends: 300 [2021-10-24 10:57:11,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:57:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-24 10:57:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 146. [2021-10-24 10:57:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 145 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 199 transitions. [2021-10-24 10:57:11,554 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 199 transitions. Word has length 32 [2021-10-24 10:57:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:11,555 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 199 transitions. [2021-10-24 10:57:11,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 199 transitions. [2021-10-24 10:57:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 10:57:11,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:11,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:11,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:11,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:11,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:11,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1524196228, now seen corresponding path program 1 times [2021-10-24 10:57:11,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:11,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779689128] [2021-10-24 10:57:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:11,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:11,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:11,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:57:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:12,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:57:12,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:12,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:12,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:12,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779689128] [2021-10-24 10:57:12,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779689128] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:12,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:12,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:57:12,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136828539] [2021-10-24 10:57:12,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:57:12,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:57:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:12,269 INFO L87 Difference]: Start difference. First operand 146 states and 199 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:12,350 INFO L93 Difference]: Finished difference Result 496 states and 679 transitions. [2021-10-24 10:57:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:57:12,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 10:57:12,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:12,353 INFO L225 Difference]: With dead ends: 496 [2021-10-24 10:57:12,354 INFO L226 Difference]: Without dead ends: 357 [2021-10-24 10:57:12,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-10-24 10:57:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 269. [2021-10-24 10:57:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3582089552238805) internal successors, (364), 268 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 364 transitions. [2021-10-24 10:57:12,392 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 364 transitions. Word has length 32 [2021-10-24 10:57:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:12,393 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 364 transitions. [2021-10-24 10:57:12,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 364 transitions. [2021-10-24 10:57:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 10:57:12,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:12,394 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:12,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:12,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:12,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:12,608 INFO L82 PathProgramCache]: Analyzing trace with hash 61292740, now seen corresponding path program 1 times [2021-10-24 10:57:12,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:12,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381796233] [2021-10-24 10:57:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:12,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:12,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:12,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:12,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:57:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:12,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:57:12,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:13,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:13,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:13,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381796233] [2021-10-24 10:57:13,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381796233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:13,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:13,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:57:13,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183518411] [2021-10-24 10:57:13,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:57:13,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:57:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:57:13,144 INFO L87 Difference]: Start difference. First operand 269 states and 364 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:13,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:13,229 INFO L93 Difference]: Finished difference Result 419 states and 564 transitions. [2021-10-24 10:57:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:57:13,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-24 10:57:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:13,232 INFO L225 Difference]: With dead ends: 419 [2021-10-24 10:57:13,232 INFO L226 Difference]: Without dead ends: 417 [2021-10-24 10:57:13,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:57:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-10-24 10:57:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 323. [2021-10-24 10:57:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.3788819875776397) internal successors, (444), 322 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2021-10-24 10:57:13,277 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 33 [2021-10-24 10:57:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:13,277 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2021-10-24 10:57:13,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2021-10-24 10:57:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-24 10:57:13,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:13,279 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-10-24 10:57:13,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:13,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:13,492 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:13,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:13,493 INFO L82 PathProgramCache]: Analyzing trace with hash 290012344, now seen corresponding path program 1 times [2021-10-24 10:57:13,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:13,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865951840] [2021-10-24 10:57:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:13,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:13,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:13,494 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:13,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 10:57:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:57:15,184 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:57:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:57:16,444 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:57:16,445 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:57:16,446 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:57:16,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:57:16,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:57:16,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 10:57:16,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:16,675 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:57:16,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:57:16 BoogieIcfgContainer [2021-10-24 10:57:16,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:57:16,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:57:16,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:57:16,854 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:57:16,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:05" (3/4) ... [2021-10-24 10:57:16,857 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:57:16,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:57:16,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:57:16,973 INFO L168 Benchmark]: Toolchain (without parser) took 14442.85 ms. Allocated memory was 54.5 MB in the beginning and 94.4 MB in the end (delta: 39.8 MB). Free memory was 31.2 MB in the beginning and 57.0 MB in the end (delta: -25.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,974 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 23.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:16,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.49 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.1 MB in the beginning and 46.1 MB in the end (delta: -15.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.33 ms. Allocated memory is still 77.6 MB. Free memory was 46.1 MB in the beginning and 43.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,975 INFO L168 Benchmark]: Boogie Preprocessor took 44.07 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 41.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,976 INFO L168 Benchmark]: RCFGBuilder took 2411.44 ms. Allocated memory is still 77.6 MB. Free memory was 40.7 MB in the beginning and 38.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,976 INFO L168 Benchmark]: TraceAbstraction took 11120.06 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 32.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,976 INFO L168 Benchmark]: Witness Printer took 118.06 ms. Allocated memory is still 94.4 MB. Free memory was 32.3 MB in the beginning and 57.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:16,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 23.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 661.49 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.1 MB in the beginning and 46.1 MB in the end (delta: -15.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.33 ms. Allocated memory is still 77.6 MB. Free memory was 46.1 MB in the beginning and 43.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.07 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 41.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2411.44 ms. Allocated memory is still 77.6 MB. Free memory was 40.7 MB in the beginning and 38.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11120.06 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 32.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * Witness Printer took 118.06 ms. Allocated memory is still 94.4 MB. Free memory was 32.3 MB in the beginning and 57.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 910]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] tmp = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L832] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L669] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] COND TRUE \read(systemActive) [L698] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L701] COND TRUE ! pumpRunning [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L137] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L801] tmp = isHighWaterSensorDry() [L803] COND FALSE !(\read(tmp)) [L806] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L703] tmp = isHighWaterLevel() [L705] COND TRUE \read(tmp) [L726] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L925] int tmp ; [L926] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L937] COND FALSE !(\read(methAndRunningLastTime)) [L942] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L832] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L669] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L676] COND TRUE \read(systemActive) [L698] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L701] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L925] int tmp ; [L926] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L937] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L910] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 910]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 910]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 10879.1ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 30.1ms, AutomataDifference: 892.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 719 SDtfs, 889 SDslu, 1284 SDs, 0 SdLazy, 132 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 258.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 536 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 195.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=10, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 271.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 887 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 212.5ms SsaConstructionTime, 2632.3ms SatisfiabilityAnalysisTime, 1948.5ms InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 868 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2054 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 10:57:17,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495dc8c6-55f4-494a-b841-5efe8fb38f33/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...