./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:27,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:27,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:27,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:27,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:27,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:28,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:28,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:28,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:28,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:28,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:28,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:28,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:28,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:28,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:28,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:28,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:28,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:28,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:28,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:28,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:28,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:28,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:28,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:28,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:28,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:28,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:28,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:28,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:28,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:28,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:28,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:28,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:28,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:28,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:28,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:28,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:28,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:28,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:28,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:28,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:28,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:50:28,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:28,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:28,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:28,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:28,127 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:28,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:28,128 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:28,128 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:50:28,134 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:28,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:28,135 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:50:28,136 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:50:28,136 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:28,136 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:50:28,136 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:50:28,137 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:50:28,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:28,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:28,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:50:28,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:28,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:28,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:28,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:28,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:28,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:28,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:28,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:28,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:28,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:28,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:28,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:28,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:28,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:28,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:28,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:28,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:50:28,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:50:28,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:28,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:28,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:28,143 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_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2021-11-19 15:50:28,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:28,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:28,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:28,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:28,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:28,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-11-19 15:50:28,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/7d3c928c2/2f80b4451e0c476f8fb409121d78c70f/FLAG419151a99 [2021-11-19 15:50:29,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:29,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-11-19 15:50:29,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/7d3c928c2/2f80b4451e0c476f8fb409121d78c70f/FLAG419151a99 [2021-11-19 15:50:29,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/7d3c928c2/2f80b4451e0c476f8fb409121d78c70f [2021-11-19 15:50:29,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:29,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:29,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:29,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:29,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:29,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:29" (1/1) ... [2021-11-19 15:50:29,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7b937f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:29, skipping insertion in model container [2021-11-19 15:50:29,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:29" (1/1) ... [2021-11-19 15:50:29,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:29,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:29,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2021-11-19 15:50:29,668 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:29,678 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:50:29,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@285a466e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:29, skipping insertion in model container [2021-11-19 15:50:29,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:29,679 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:50:29,681 INFO L158 Benchmark]: Toolchain (without parser) took 266.39ms. Allocated memory is still 96.5MB. Free memory was 54.9MB in the beginning and 72.1MB in the end (delta: -17.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 15:50:29,682 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:50:29,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.57ms. Allocated memory is still 96.5MB. Free memory was 54.7MB in the beginning and 72.1MB in the end (delta: -17.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 15:50:29,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.57ms. Allocated memory is still 96.5MB. Free memory was 54.7MB in the beginning and 72.1MB in the end (delta: -17.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:31,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:31,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:31,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:31,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:31,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:31,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:31,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:31,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:31,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:31,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:31,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:31,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:31,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:31,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:31,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:31,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:31,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:31,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:31,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:31,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:31,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:31,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:31,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:32,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:32,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:32,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:32,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:32,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:32,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:32,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:32,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:32,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:32,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:32,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:32,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:32,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:32,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:32,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:32,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:32,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:32,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:50:32,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:32,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:32,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:32,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:32,075 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:32,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:32,076 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:32,076 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:32,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:32,077 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:32,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:32,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:32,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:32,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:32,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:32,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:32,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:32,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:32,081 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:50:32,081 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:50:32,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:32,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:32,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:32,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:32,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:32,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:50:32,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:32,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:32,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:32,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:32,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:32,084 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:50:32,084 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:32,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:32,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:32,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:32,085 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_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2021-11-19 15:50:32,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:32,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:32,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:32,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:32,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:32,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-11-19 15:50:32,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/c74859021/58ead40942644cf99ee132b5b5fbad97/FLAGa0e74541d [2021-11-19 15:50:33,265 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:33,265 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-11-19 15:50:33,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/c74859021/58ead40942644cf99ee132b5b5fbad97/FLAGa0e74541d [2021-11-19 15:50:33,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/data/c74859021/58ead40942644cf99ee132b5b5fbad97 [2021-11-19 15:50:33,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:33,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:33,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:33,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:33,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:33,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:33" (1/1) ... [2021-11-19 15:50:33,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7499ff1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:33, skipping insertion in model container [2021-11-19 15:50:33,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:33" (1/1) ... [2021-11-19 15:50:33,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:33,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:33,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2021-11-19 15:50:33,925 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:33,940 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:50:33,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:33,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2021-11-19 15:50:33,983 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:33,997 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:50:34,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2021-11-19 15:50:34,057 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:34,083 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:50:34,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34 WrapperNode [2021-11-19 15:50:34,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:34,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:34,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:50:34,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:50:34,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,169 INFO L137 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 108 [2021-11-19 15:50:34,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:34,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:50:34,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:50:34,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:50:34,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:50:34,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:50:34,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:50:34,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:50:34,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (1/1) ... [2021-11-19 15:50:34,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:34,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:34,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:50:34,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:50:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:50:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 15:50:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 15:50:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 15:50:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 15:50:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:50:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:50:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:50:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:50:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:50:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:50:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:50:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:50:34,355 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 15:50:34,510 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:50:34,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:50:35,017 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:50:35,030 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:50:35,033 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 15:50:35,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:35 BoogieIcfgContainer [2021-11-19 15:50:35,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:50:35,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:50:35,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:50:35,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:50:35,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:50:33" (1/3) ... [2021-11-19 15:50:35,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc21456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:35, skipping insertion in model container [2021-11-19 15:50:35,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:34" (2/3) ... [2021-11-19 15:50:35,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc21456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:35, skipping insertion in model container [2021-11-19 15:50:35,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:35" (3/3) ... [2021-11-19 15:50:35,051 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2021-11-19 15:50:35,058 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 15:50:35,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:50:35,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:50:35,059 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 15:50:35,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,162 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,163 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,163 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,163 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:35,171 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-19 15:50:35,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:50:35,255 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:50:35,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 15:50:35,282 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 15:50:35,303 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 170 transitions, 356 flow [2021-11-19 15:50:35,311 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 170 transitions, 356 flow [2021-11-19 15:50:35,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 170 transitions, 356 flow [2021-11-19 15:50:35,450 INFO L129 PetriNetUnfolder]: 15/168 cut-off events. [2021-11-19 15:50:35,450 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 15:50:35,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 168 events. 15/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 127. Up to 3 conditions per place. [2021-11-19 15:50:35,464 INFO L116 LiptonReduction]: Number of co-enabled transitions 992 [2021-11-19 15:50:49,181 INFO L131 LiptonReduction]: Checked pairs total: 1224 [2021-11-19 15:50:49,181 INFO L133 LiptonReduction]: Total number of compositions: 183 [2021-11-19 15:50:49,191 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 22 transitions, 60 flow [2021-11-19 15:50:49,204 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 28 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 15:50:49,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:49,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:49,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 15:50:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:49,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1301314015, now seen corresponding path program 1 times [2021-11-19 15:50:49,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:49,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910881823] [2021-11-19 15:50:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:49,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:49,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:49,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:49,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:50:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:49,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:50:49,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:49,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:49,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:49,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910881823] [2021-11-19 15:50:49,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910881823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:49,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:49,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-19 15:50:49,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219560134] [2021-11-19 15:50:49,696 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:49,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:49,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:49,729 INFO L87 Difference]: Start difference. First operand has 28 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 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 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:49,911 INFO L93 Difference]: Finished difference Result 51 states and 121 transitions. [2021-11-19 15:50:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:49,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 13 [2021-11-19 15:50:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:49,925 INFO L225 Difference]: With dead ends: 51 [2021-11-19 15:50:49,926 INFO L226 Difference]: Without dead ends: 46 [2021-11-19 15:50:49,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:49,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:49,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-19 15:50:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-19 15:50:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 109 transitions. [2021-11-19 15:50:49,990 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 109 transitions. Word has length 13 [2021-11-19 15:50:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:49,992 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 109 transitions. [2021-11-19 15:50:49,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 109 transitions. [2021-11-19 15:50:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 15:50:50,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:50,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:50,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:50,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:50,217 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 15:50:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2005771140, now seen corresponding path program 1 times [2021-11-19 15:50:50,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:50,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826236742] [2021-11-19 15:50:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:50,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:50,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:50,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:50:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:50,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:50:50,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:50,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:50,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:50,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826236742] [2021-11-19 15:50:50,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826236742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:50,629 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:50,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:50:50,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702926896] [2021-11-19 15:50:50,630 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:50,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:50,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:50,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:50,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:50,632 INFO L87 Difference]: Start difference. First operand 46 states and 109 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-19 15:50:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:50,840 INFO L93 Difference]: Finished difference Result 91 states and 201 transitions. [2021-11-19 15:50:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:50,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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 14 [2021-11-19 15:50:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:50,842 INFO L225 Difference]: With dead ends: 91 [2021-11-19 15:50:50,843 INFO L226 Difference]: Without dead ends: 85 [2021-11-19 15:50:50,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:50,844 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:50,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-19 15:50:50,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2021-11-19 15:50:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.3857142857142857) internal successors, (167), 70 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 167 transitions. [2021-11-19 15:50:50,859 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 167 transitions. Word has length 14 [2021-11-19 15:50:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:50,859 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 167 transitions. [2021-11-19 15:50:50,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-19 15:50:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 167 transitions. [2021-11-19 15:50:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 15:50:50,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:50,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:50,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:51,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:51,071 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 15:50:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash 129548344, now seen corresponding path program 1 times [2021-11-19 15:50:51,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:51,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104519823] [2021-11-19 15:50:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:51,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:51,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:51,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:51,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:50:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:51,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:50:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:51,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:52,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:52,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104519823] [2021-11-19 15:50:52,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104519823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:52,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [542556309] [2021-11-19 15:50:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:52,076 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:52,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:52,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:52,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 15:50:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:50:52,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:50:52,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:50:52,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [542556309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:52,492 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:50:52,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 16 [2021-11-19 15:50:52,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164310370] [2021-11-19 15:50:52,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:52,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:52,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:50:52,494 INFO L87 Difference]: Start difference. First operand 71 states and 167 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:52,744 INFO L93 Difference]: Finished difference Result 157 states and 357 transitions. [2021-11-19 15:50:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:52,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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 15 [2021-11-19 15:50:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:52,748 INFO L225 Difference]: With dead ends: 157 [2021-11-19 15:50:52,748 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 15:50:52,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:50:52,750 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:52,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 15:50:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 72. [2021-11-19 15:50:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.380281690140845) internal successors, (169), 71 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 169 transitions. [2021-11-19 15:50:52,765 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 169 transitions. Word has length 15 [2021-11-19 15:50:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:52,766 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 169 transitions. [2021-11-19 15:50:52,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 169 transitions. [2021-11-19 15:50:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 15:50:52,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:52,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:52,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-19 15:50:52,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 15:50:53,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:53,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 15:50:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1275785065, now seen corresponding path program 1 times [2021-11-19 15:50:53,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:53,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73032284] [2021-11-19 15:50:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:53,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:53,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:53,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:50:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:53,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:50:53,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:53,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:53,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:53,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73032284] [2021-11-19 15:50:53,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73032284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:53,475 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:53,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:50:53,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842827556] [2021-11-19 15:50:53,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:53,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:53,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:53,477 INFO L87 Difference]: Start difference. First operand 72 states and 169 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:53,631 INFO L93 Difference]: Finished difference Result 79 states and 176 transitions. [2021-11-19 15:50:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:53,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 15 [2021-11-19 15:50:53,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:53,634 INFO L225 Difference]: With dead ends: 79 [2021-11-19 15:50:53,634 INFO L226 Difference]: Without dead ends: 71 [2021-11-19 15:50:53,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:53,635 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:53,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-19 15:50:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-19 15:50:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.3714285714285714) internal successors, (166), 70 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 166 transitions. [2021-11-19 15:50:53,647 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 166 transitions. Word has length 15 [2021-11-19 15:50:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:53,647 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 166 transitions. [2021-11-19 15:50:53,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 166 transitions. [2021-11-19 15:50:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:50:53,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:53,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:53,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 15:50:53,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:53,864 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 15:50:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash 690850403, now seen corresponding path program 1 times [2021-11-19 15:50:53,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:53,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175889974] [2021-11-19 15:50:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:53,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:53,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:53,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:53,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7674518-44e5-4c5d-8bf8-5168461288bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:50:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:53,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:50:53,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:54,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:02,217 WARN L227 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 526 DAG size of output: 318 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:51:02,230 INFO L354 Elim1Store]: treesize reduction 1208, result has 47.3 percent of original size [2021-11-19 15:51:02,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 179 treesize of output 1123