./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8 --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 fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:55:52,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:55:52,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:55:52,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:55:52,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:55:52,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:55:52,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:55:52,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:55:52,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:55:52,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:55:52,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:55:52,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:55:52,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:55:52,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:55:52,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:55:52,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:55:52,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:55:52,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:55:52,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:55:52,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:55:52,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:55:52,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:55:52,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:55:52,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:55:52,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:55:52,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:55:52,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:55:52,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:55:52,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:55:52,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:55:52,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:55:52,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:55:52,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:55:52,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:55:52,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:55:52,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:55:52,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:55:52,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:55:52,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:55:52,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:55:52,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:55:52,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:55:52,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:55:52,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:55:52,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:55:52,228 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:55:52,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:55:52,229 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:55:52,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:55:52,229 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:55:52,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:55:52,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:55:52,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:55:52,231 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:55:52,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:55:52,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:55:52,232 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:55:52,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:55:52,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:55:52,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:55:52,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:55:52,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:55:52,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:55:52,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:55:52,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:55:52,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:55:52,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:55:52,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:55:52,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:55:52,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:55:52,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:55:52,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:55:52,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:55:52,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:55:52,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:55:52,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:55:52,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:55:52,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:55:52,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:55:52,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:55:52,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:55:52,241 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_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 [2021-11-07 01:55:52,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:55:52,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:55:52,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:55:52,577 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:55:52,578 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:55:52,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2021-11-07 01:55:52,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/546b865bb/c0f43aba53fc4ef3b671ece863c6c4ea/FLAG50ae9a855 [2021-11-07 01:55:53,369 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:55:53,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2021-11-07 01:55:53,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/546b865bb/c0f43aba53fc4ef3b671ece863c6c4ea/FLAG50ae9a855 [2021-11-07 01:55:53,560 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/546b865bb/c0f43aba53fc4ef3b671ece863c6c4ea [2021-11-07 01:55:53,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:55:53,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:55:53,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:53,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:55:53,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:55:53,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:53" (1/1) ... [2021-11-07 01:55:53,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be05ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:53, skipping insertion in model container [2021-11-07 01:55:53,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:53" (1/1) ... [2021-11-07 01:55:53,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:55:53,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:55:53,948 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2021-11-07 01:55:54,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:54,363 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) [2021-11-07 01:55:54,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@275756f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:54, skipping insertion in model container [2021-11-07 01:55:54,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:54,364 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:55:54,366 INFO L168 Benchmark]: Toolchain (without parser) took 800.79 ms. Allocated memory is still 88.1 MB. Free memory was 47.0 MB in the beginning and 49.9 MB in the end (delta: -2.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:55:54,367 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 67.1 MB in the beginning and 66.9 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:55:54,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.90 ms. Allocated memory is still 88.1 MB. Free memory was 46.8 MB in the beginning and 49.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:55:54,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 67.1 MB in the beginning and 66.9 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 797.90 ms. Allocated memory is still 88.1 MB. Free memory was 46.8 MB in the beginning and 49.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: 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_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8 --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 fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:55:56,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:55:56,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:55:56,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:55:56,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:55:56,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:55:56,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:55:56,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:55:56,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:55:56,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:55:56,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:55:56,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:55:56,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:55:56,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:55:56,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:55:56,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:55:56,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:55:56,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:55:56,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:55:56,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:55:56,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:55:56,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:55:56,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:55:56,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:55:56,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:55:56,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:55:56,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:55:56,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:55:56,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:55:56,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:55:56,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:55:56,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:55:56,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:55:56,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:55:56,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:55:56,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:55:56,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:55:56,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:55:56,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:55:56,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:55:56,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:55:56,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:55:56,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:55:56,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:55:56,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:55:56,769 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:55:56,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:55:56,769 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:55:56,769 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:55:56,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:55:56,770 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:55:56,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:55:56,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:55:56,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:55:56,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:55:56,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:55:56,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:55:56,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:55:56,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:55:56,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:55:56,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:55:56,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:55:56,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:55:56,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:55:56,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:55:56,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:55:56,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:55:56,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:55:56,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:55:56,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:55:56,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:55:56,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:55:56,780 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:55:56,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:55:56,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:55:56,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:55:56,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:55:56,781 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_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 [2021-11-07 01:55:57,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:55:57,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:55:57,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:55:57,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:55:57,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:55:57,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2021-11-07 01:55:57,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/9c404910c/952465d7e6784782933b311e5d478157/FLAGdaa0b02ba [2021-11-07 01:55:58,122 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:55:58,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2021-11-07 01:55:58,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/9c404910c/952465d7e6784782933b311e5d478157/FLAGdaa0b02ba [2021-11-07 01:55:58,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/data/9c404910c/952465d7e6784782933b311e5d478157 [2021-11-07 01:55:58,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:55:58,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:55:58,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:58,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:55:58,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:55:58,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:58" (1/1) ... [2021-11-07 01:55:58,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3262bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:58, skipping insertion in model container [2021-11-07 01:55:58,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:58" (1/1) ... [2021-11-07 01:55:58,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:55:58,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:55:58,688 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2021-11-07 01:55:59,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:59,121 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:55:59,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:55:59,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2021-11-07 01:55:59,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:59,260 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:55:59,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2021-11-07 01:55:59,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:59,474 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:55:59,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59 WrapperNode [2021-11-07 01:55:59,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:59,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:55:59,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:55:59,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:55:59,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:55:59,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:06,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:56:06,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:56:06,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:56:06,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:56:06,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:06,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:08,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:08,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:10,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:10,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:11,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:12,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:56:12,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:56:12,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:56:12,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:56:12,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2021-11-07 01:56:12,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:56:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:56:12,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:56:12,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:56:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:56:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:56:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:56:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:56:12,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:57:31,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:57:31,573 INFO L299 CfgBuilder]: Removed 40731 assume(true) statements. [2021-11-07 01:57:31,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:31 BoogieIcfgContainer [2021-11-07 01:57:31,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:57:31,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:57:31,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:57:31,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:57:31,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:55:58" (1/3) ... [2021-11-07 01:57:31,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb8c10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:31, skipping insertion in model container [2021-11-07 01:57:31,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (2/3) ... [2021-11-07 01:57:31,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb8c10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:31, skipping insertion in model container [2021-11-07 01:57:31,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:31" (3/3) ... [2021-11-07 01:57:31,633 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_productSimulator.cil.c [2021-11-07 01:57:31,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:57:31,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 512 error locations. [2021-11-07 01:57:31,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:57:31,826 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 [2021-11-07 01:57:31,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 512 error locations. [2021-11-07 01:57:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 45204 states, 44691 states have (on average 1.651764337338614) internal successors, (73819), 45203 states have internal predecessors, (73819), 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) [2021-11-07 01:57:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:57:32,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:32,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:32,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr255ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:32,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash -135487799, now seen corresponding path program 1 times [2021-11-07 01:57:32,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:32,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450399981] [2021-11-07 01:57:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:32,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:32,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:32,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:32,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:57:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:33,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:57:33,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:33,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:33,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:33,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450399981] [2021-11-07 01:57:33,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450399981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:33,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:33,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:57:33,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497380242] [2021-11-07 01:57:33,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:57:33,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:57:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:57:33,977 INFO L87 Difference]: Start difference. First operand has 45204 states, 44691 states have (on average 1.651764337338614) internal successors, (73819), 45203 states have internal predecessors, (73819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2021-11-07 01:57:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:35,736 INFO L93 Difference]: Finished difference Result 90073 states and 147026 transitions. [2021-11-07 01:57:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:57:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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 57 [2021-11-07 01:57:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:36,036 INFO L225 Difference]: With dead ends: 90073 [2021-11-07 01:57:36,037 INFO L226 Difference]: Without dead ends: 33920 [2021-11-07 01:57:36,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:57:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33920 states. [2021-11-07 01:57:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33920 to 33920. [2021-11-07 01:57:37,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33920 states, 33408 states have (on average 1.6509818007662835) internal successors, (55156), 33919 states have internal predecessors, (55156), 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) [2021-11-07 01:57:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33920 states to 33920 states and 55156 transitions. [2021-11-07 01:57:37,312 INFO L78 Accepts]: Start accepts. Automaton has 33920 states and 55156 transitions. Word has length 57 [2021-11-07 01:57:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:37,313 INFO L470 AbstractCegarLoop]: Abstraction has 33920 states and 55156 transitions. [2021-11-07 01:57:37,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2021-11-07 01:57:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 33920 states and 55156 transitions. [2021-11-07 01:57:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:57:37,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:37,322 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:37,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:37,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:37,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr255ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1500923644, now seen corresponding path program 1 times [2021-11-07 01:57:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:37,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834261362] [2021-11-07 01:57:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:37,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:37,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:37,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:57:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:38,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:38,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:38,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:38,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:38,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834261362] [2021-11-07 01:57:38,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834261362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:38,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:38,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:57:38,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881709944] [2021-11-07 01:57:38,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:38,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:38,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:38,466 INFO L87 Difference]: Start difference. First operand 33920 states and 55156 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-07 01:57:40,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:40,296 INFO L93 Difference]: Finished difference Result 67815 states and 110274 transitions. [2021-11-07 01:57:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:57:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-11-07 01:57:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:40,412 INFO L225 Difference]: With dead ends: 67815 [2021-11-07 01:57:40,412 INFO L226 Difference]: Without dead ends: 33920 [2021-11-07 01:57:40,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:57:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33920 states. [2021-11-07 01:57:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33920 to 33920. [2021-11-07 01:57:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33920 states, 33408 states have (on average 1.6507722701149425) internal successors, (55149), 33919 states have internal predecessors, (55149), 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) [2021-11-07 01:57:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33920 states to 33920 states and 55149 transitions. [2021-11-07 01:57:41,740 INFO L78 Accepts]: Start accepts. Automaton has 33920 states and 55149 transitions. Word has length 58 [2021-11-07 01:57:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:41,741 INFO L470 AbstractCegarLoop]: Abstraction has 33920 states and 55149 transitions. [2021-11-07 01:57:41,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-07 01:57:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 33920 states and 55149 transitions. [2021-11-07 01:57:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:57:41,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:41,756 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:41,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:57:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:41,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr255ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash -781918698, now seen corresponding path program 1 times [2021-11-07 01:57:41,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:41,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361110523] [2021-11-07 01:57:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:41,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:41,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:41,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:42,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:57:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:42,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:42,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:42,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:43,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:43,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361110523] [2021-11-07 01:57:43,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361110523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:43,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:43,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:43,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591748912] [2021-11-07 01:57:43,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:43,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:43,014 INFO L87 Difference]: Start difference. First operand 33920 states and 55149 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 01:57:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:46,874 INFO L93 Difference]: Finished difference Result 49266 states and 80535 transitions. [2021-11-07 01:57:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:46,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 63 [2021-11-07 01:57:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:46,920 INFO L225 Difference]: With dead ends: 49266 [2021-11-07 01:57:46,921 INFO L226 Difference]: Without dead ends: 15368 [2021-11-07 01:57:46,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15368 states. [2021-11-07 01:57:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15368 to 15368. [2021-11-07 01:57:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15112 states have (on average 1.6746956061408151) internal successors, (25308), 15367 states have internal predecessors, (25308), 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) [2021-11-07 01:57:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 25308 transitions. [2021-11-07 01:57:47,391 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 25308 transitions. Word has length 63 [2021-11-07 01:57:47,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:47,391 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 25308 transitions. [2021-11-07 01:57:47,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 01:57:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 25308 transitions. [2021-11-07 01:57:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:57:47,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:47,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:47,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:47,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:47,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr251ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash 415090532, now seen corresponding path program 1 times [2021-11-07 01:57:47,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:47,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116549668] [2021-11-07 01:57:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:47,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:47,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:47,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:57:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:48,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:48,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:48,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:48,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:48,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116549668] [2021-11-07 01:57:48,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116549668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:48,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:48,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:57:48,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558394306] [2021-11-07 01:57:48,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:48,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:48,550 INFO L87 Difference]: Start difference. First operand 15368 states and 25308 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-07 01:57:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:49,520 INFO L93 Difference]: Finished difference Result 31470 states and 51979 transitions. [2021-11-07 01:57:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-07 01:57:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:49,561 INFO L225 Difference]: With dead ends: 31470 [2021-11-07 01:57:49,561 INFO L226 Difference]: Without dead ends: 16122 [2021-11-07 01:57:49,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16122 states. [2021-11-07 01:57:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16122 to 15474. [2021-11-07 01:57:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15474 states, 15218 states have (on average 1.6846497568668681) internal successors, (25637), 15473 states have internal predecessors, (25637), 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) [2021-11-07 01:57:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15474 states to 15474 states and 25637 transitions. [2021-11-07 01:57:50,021 INFO L78 Accepts]: Start accepts. Automaton has 15474 states and 25637 transitions. Word has length 69 [2021-11-07 01:57:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:50,021 INFO L470 AbstractCegarLoop]: Abstraction has 15474 states and 25637 transitions. [2021-11-07 01:57:50,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-07 01:57:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 15474 states and 25637 transitions. [2021-11-07 01:57:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:57:50,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:50,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:50,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:50,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:50,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr251ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash 28519787, now seen corresponding path program 1 times [2021-11-07 01:57:50,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:50,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183183878] [2021-11-07 01:57:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:50,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:50,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:50,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:57:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:50,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:50,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:51,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:51,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:51,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183183878] [2021-11-07 01:57:51,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183183878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:51,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:51,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:57:51,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660326609] [2021-11-07 01:57:51,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:51,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:51,190 INFO L87 Difference]: Start difference. First operand 15474 states and 25637 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 01:57:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:53,814 INFO L93 Difference]: Finished difference Result 16122 states and 26668 transitions. [2021-11-07 01:57:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:53,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-07 01:57:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:53,833 INFO L225 Difference]: With dead ends: 16122 [2021-11-07 01:57:53,833 INFO L226 Difference]: Without dead ends: 6990 [2021-11-07 01:57:53,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6990 states. [2021-11-07 01:57:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6990 to 6990. [2021-11-07 01:57:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6862 states have (on average 1.68755464879044) internal successors, (11580), 6989 states have internal predecessors, (11580), 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) [2021-11-07 01:57:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 11580 transitions. [2021-11-07 01:57:54,042 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 11580 transitions. Word has length 70 [2021-11-07 01:57:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:54,042 INFO L470 AbstractCegarLoop]: Abstraction has 6990 states and 11580 transitions. [2021-11-07 01:57:54,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 01:57:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 11580 transitions. [2021-11-07 01:57:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:57:54,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:54,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:54,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:54,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:54,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:54,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2031906419, now seen corresponding path program 1 times [2021-11-07 01:57:54,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:54,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598676523] [2021-11-07 01:57:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:54,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:54,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:54,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:54,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:57:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:54,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:54,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:55,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:55,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:55,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598676523] [2021-11-07 01:57:55,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598676523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:55,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:55,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:57:55,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291790271] [2021-11-07 01:57:55,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:55,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:55,250 INFO L87 Difference]: Start difference. First operand 6990 states and 11580 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 01:57:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:57,550 INFO L93 Difference]: Finished difference Result 13941 states and 23102 transitions. [2021-11-07 01:57:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:57,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-07 01:57:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:57,570 INFO L225 Difference]: With dead ends: 13941 [2021-11-07 01:57:57,570 INFO L226 Difference]: Without dead ends: 6987 [2021-11-07 01:57:57,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6987 states. [2021-11-07 01:57:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6987 to 6981. [2021-11-07 01:57:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6853 states have (on average 1.6855391799212025) internal successors, (11551), 6980 states have internal predecessors, (11551), 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) [2021-11-07 01:57:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 11551 transitions. [2021-11-07 01:57:57,791 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 11551 transitions. Word has length 75 [2021-11-07 01:57:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:57,791 INFO L470 AbstractCegarLoop]: Abstraction has 6981 states and 11551 transitions. [2021-11-07 01:57:57,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 01:57:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 11551 transitions. [2021-11-07 01:57:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:57:57,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:57,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:57,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:58,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:58,014 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:57:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1460703094, now seen corresponding path program 1 times [2021-11-07 01:57:58,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:58,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165249139] [2021-11-07 01:57:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:58,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:58,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:58,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:58,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:57:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:58,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:57:58,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:58,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:59,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:59,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165249139] [2021-11-07 01:57:59,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165249139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:59,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:59,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:57:59,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387314093] [2021-11-07 01:57:59,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:57:59,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:59,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:57:59,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:57:59,039 INFO L87 Difference]: Start difference. First operand 6981 states and 11551 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-07 01:58:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:00,294 INFO L93 Difference]: Finished difference Result 27795 states and 46033 transitions. [2021-11-07 01:58:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:58:00,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 81 [2021-11-07 01:58:00,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:00,352 INFO L225 Difference]: With dead ends: 27795 [2021-11-07 01:58:00,353 INFO L226 Difference]: Without dead ends: 20854 [2021-11-07 01:58:00,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:58:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20854 states. [2021-11-07 01:58:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20854 to 6980. [2021-11-07 01:58:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6980 states, 6852 states have (on average 1.685201401050788) internal successors, (11547), 6979 states have internal predecessors, (11547), 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) [2021-11-07 01:58:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 11547 transitions. [2021-11-07 01:58:00,716 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 11547 transitions. Word has length 81 [2021-11-07 01:58:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:00,717 INFO L470 AbstractCegarLoop]: Abstraction has 6980 states and 11547 transitions. [2021-11-07 01:58:00,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-07 01:58:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 11547 transitions. [2021-11-07 01:58:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:58:00,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:00,725 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:00,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:58:00,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:00,940 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1452515455, now seen corresponding path program 1 times [2021-11-07 01:58:00,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:00,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281500806] [2021-11-07 01:58:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:00,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:00,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:00,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:58:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:58:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:01,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:01,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:01,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281500806] [2021-11-07 01:58:01,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281500806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:01,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:01,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:58:01,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889112339] [2021-11-07 01:58:01,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:58:01,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:58:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:58:01,966 INFO L87 Difference]: Start difference. First operand 6980 states and 11547 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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) [2021-11-07 01:58:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:03,219 INFO L93 Difference]: Finished difference Result 27762 states and 45964 transitions. [2021-11-07 01:58:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:58:03,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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 82 [2021-11-07 01:58:03,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:03,268 INFO L225 Difference]: With dead ends: 27762 [2021-11-07 01:58:03,269 INFO L226 Difference]: Without dead ends: 20825 [2021-11-07 01:58:03,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:58:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20825 states. [2021-11-07 01:58:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20825 to 6979. [2021-11-07 01:58:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6851 states have (on average 1.684863523573201) internal successors, (11543), 6978 states have internal predecessors, (11543), 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) [2021-11-07 01:58:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 11543 transitions. [2021-11-07 01:58:03,725 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 11543 transitions. Word has length 82 [2021-11-07 01:58:03,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:03,726 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 11543 transitions. [2021-11-07 01:58:03,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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) [2021-11-07 01:58:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 11543 transitions. [2021-11-07 01:58:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:58:03,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:03,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:03,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:03,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:03,949 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1671191543, now seen corresponding path program 1 times [2021-11-07 01:58:03,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:03,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787288659] [2021-11-07 01:58:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:03,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:03,951 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:03,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:58:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:04,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:58:04,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:04,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:04,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:04,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787288659] [2021-11-07 01:58:04,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787288659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:04,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:04,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:58:04,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557508160] [2021-11-07 01:58:04,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:58:04,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:58:04,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:58:04,908 INFO L87 Difference]: Start difference. First operand 6979 states and 11543 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2021-11-07 01:58:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:05,266 INFO L93 Difference]: Finished difference Result 13922 states and 23044 transitions. [2021-11-07 01:58:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:58:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 83 [2021-11-07 01:58:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:05,278 INFO L225 Difference]: With dead ends: 13922 [2021-11-07 01:58:05,279 INFO L226 Difference]: Without dead ends: 6991 [2021-11-07 01:58:05,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:58:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6991 states. [2021-11-07 01:58:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6991 to 6979. [2021-11-07 01:58:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6851 states have (on average 1.6844256312947015) internal successors, (11540), 6978 states have internal predecessors, (11540), 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) [2021-11-07 01:58:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 11540 transitions. [2021-11-07 01:58:05,658 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 11540 transitions. Word has length 83 [2021-11-07 01:58:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:05,658 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 11540 transitions. [2021-11-07 01:58:05,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2021-11-07 01:58:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 11540 transitions. [2021-11-07 01:58:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:58:05,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:05,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:05,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:05,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:05,876 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash 80897966, now seen corresponding path program 1 times [2021-11-07 01:58:05,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:05,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176566664] [2021-11-07 01:58:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:05,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:05,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:05,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:58:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:06,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:58:06,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:06,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:06,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:06,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176566664] [2021-11-07 01:58:06,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176566664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:06,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:06,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:58:06,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799485059] [2021-11-07 01:58:06,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:58:06,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:06,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:58:06,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:58:06,911 INFO L87 Difference]: Start difference. First operand 6979 states and 11540 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2021-11-07 01:58:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:08,230 INFO L93 Difference]: Finished difference Result 27748 states and 45938 transitions. [2021-11-07 01:58:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:58:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 85 [2021-11-07 01:58:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:08,258 INFO L225 Difference]: With dead ends: 27748 [2021-11-07 01:58:08,259 INFO L226 Difference]: Without dead ends: 20821 [2021-11-07 01:58:08,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:58:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20821 states. [2021-11-07 01:58:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20821 to 6979. [2021-11-07 01:58:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6851 states have (on average 1.683987739016202) internal successors, (11537), 6978 states have internal predecessors, (11537), 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) [2021-11-07 01:58:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 11537 transitions. [2021-11-07 01:58:08,798 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 11537 transitions. Word has length 85 [2021-11-07 01:58:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:08,799 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 11537 transitions. [2021-11-07 01:58:08,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2021-11-07 01:58:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 11537 transitions. [2021-11-07 01:58:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:58:08,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:08,803 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:08,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:09,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:09,020 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash -577679117, now seen corresponding path program 1 times [2021-11-07 01:58:09,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:09,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324204613] [2021-11-07 01:58:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:09,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:09,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:09,022 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:09,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:58:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:09,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:58:09,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:09,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:09,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:10,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324204613] [2021-11-07 01:58:10,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324204613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:10,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:10,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:58:10,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136905551] [2021-11-07 01:58:10,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:58:10,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:58:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:58:10,002 INFO L87 Difference]: Start difference. First operand 6979 states and 11537 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-11-07 01:58:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:10,714 INFO L93 Difference]: Finished difference Result 20561 states and 33995 transitions. [2021-11-07 01:58:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:58:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 87 [2021-11-07 01:58:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:10,733 INFO L225 Difference]: With dead ends: 20561 [2021-11-07 01:58:10,734 INFO L226 Difference]: Without dead ends: 13906 [2021-11-07 01:58:10,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:58:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2021-11-07 01:58:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 7251. [2021-11-07 01:58:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7251 states, 7123 states have (on average 1.6890355187421031) internal successors, (12031), 7250 states have internal predecessors, (12031), 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) [2021-11-07 01:58:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 12031 transitions. [2021-11-07 01:58:11,233 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 12031 transitions. Word has length 87 [2021-11-07 01:58:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:11,234 INFO L470 AbstractCegarLoop]: Abstraction has 7251 states and 12031 transitions. [2021-11-07 01:58:11,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-11-07 01:58:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 12031 transitions. [2021-11-07 01:58:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 01:58:11,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:11,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:11,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:11,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:11,459 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 634611206, now seen corresponding path program 1 times [2021-11-07 01:58:11,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:11,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161928254] [2021-11-07 01:58:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:11,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:11,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:11,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:58:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:12,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:58:12,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:12,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:12,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:12,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161928254] [2021-11-07 01:58:12,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161928254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:12,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:12,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:58:12,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685914884] [2021-11-07 01:58:12,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:58:12,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:58:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:12,495 INFO L87 Difference]: Start difference. First operand 7251 states and 12031 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-07 01:58:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:13,298 INFO L93 Difference]: Finished difference Result 21265 states and 35276 transitions. [2021-11-07 01:58:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:58:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2021-11-07 01:58:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:13,318 INFO L225 Difference]: With dead ends: 21265 [2021-11-07 01:58:13,318 INFO L226 Difference]: Without dead ends: 14125 [2021-11-07 01:58:13,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2021-11-07 01:58:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 7470. [2021-11-07 01:58:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7470 states, 7342 states have (on average 1.6925905747752656) internal successors, (12427), 7469 states have internal predecessors, (12427), 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) [2021-11-07 01:58:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 12427 transitions. [2021-11-07 01:58:13,963 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 12427 transitions. Word has length 99 [2021-11-07 01:58:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:13,963 INFO L470 AbstractCegarLoop]: Abstraction has 7470 states and 12427 transitions. [2021-11-07 01:58:13,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-07 01:58:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 12427 transitions. [2021-11-07 01:58:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 01:58:13,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:13,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:13,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:14,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:14,185 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2075341083, now seen corresponding path program 1 times [2021-11-07 01:58:14,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:14,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451280009] [2021-11-07 01:58:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:14,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:14,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:14,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:14,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:58:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:14,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:58:14,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:15,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:15,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:15,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451280009] [2021-11-07 01:58:15,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451280009] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:15,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:15,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:58:15,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309524428] [2021-11-07 01:58:15,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:58:15,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:58:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:15,297 INFO L87 Difference]: Start difference. First operand 7470 states and 12427 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-07 01:58:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:16,189 INFO L93 Difference]: Finished difference Result 21952 states and 36524 transitions. [2021-11-07 01:58:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:58:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2021-11-07 01:58:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:16,210 INFO L225 Difference]: With dead ends: 21952 [2021-11-07 01:58:16,211 INFO L226 Difference]: Without dead ends: 14602 [2021-11-07 01:58:16,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14602 states. [2021-11-07 01:58:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 7947. [2021-11-07 01:58:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7819 states have (on average 1.6999616319222406) internal successors, (13292), 7946 states have internal predecessors, (13292), 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) [2021-11-07 01:58:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 13292 transitions. [2021-11-07 01:58:16,777 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 13292 transitions. Word has length 100 [2021-11-07 01:58:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 13292 transitions. [2021-11-07 01:58:16,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-07 01:58:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 13292 transitions. [2021-11-07 01:58:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:58:16,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:16,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:16,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:16,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:16,983 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:16,983 INFO L85 PathProgramCache]: Analyzing trace with hash -142414894, now seen corresponding path program 1 times [2021-11-07 01:58:16,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:16,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386141329] [2021-11-07 01:58:16,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:16,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:16,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:16,985 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:58:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:17,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:58:17,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:17,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:18,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:18,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386141329] [2021-11-07 01:58:18,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386141329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:18,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:18,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:58:18,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060997232] [2021-11-07 01:58:18,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:58:18,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:58:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:18,164 INFO L87 Difference]: Start difference. First operand 7947 states and 13292 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-07 01:58:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:19,116 INFO L93 Difference]: Finished difference Result 23360 states and 39087 transitions. [2021-11-07 01:58:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:58:19,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-07 01:58:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:19,139 INFO L225 Difference]: With dead ends: 23360 [2021-11-07 01:58:19,139 INFO L226 Difference]: Without dead ends: 15542 [2021-11-07 01:58:19,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15542 states. [2021-11-07 01:58:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15542 to 8887. [2021-11-07 01:58:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8887 states, 8759 states have (on average 1.7126384290444114) internal successors, (15001), 8886 states have internal predecessors, (15001), 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) [2021-11-07 01:58:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8887 states to 8887 states and 15001 transitions. [2021-11-07 01:58:19,626 INFO L78 Accepts]: Start accepts. Automaton has 8887 states and 15001 transitions. Word has length 101 [2021-11-07 01:58:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:19,627 INFO L470 AbstractCegarLoop]: Abstraction has 8887 states and 15001 transitions. [2021-11-07 01:58:19,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-07 01:58:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8887 states and 15001 transitions. [2021-11-07 01:58:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 01:58:19,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:19,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:19,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:19,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:19,865 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr122ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 509 more)] === [2021-11-07 01:58:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash 444816498, now seen corresponding path program 1 times [2021-11-07 01:58:19,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:19,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167329749] [2021-11-07 01:58:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:19,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:19,868 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:19,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_432af279-323e-43cc-8d0f-1e4c3464944a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:58:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:20,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:58:20,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:20,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:21,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:21,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167329749] [2021-11-07 01:58:21,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167329749] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:21,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:21,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:58:21,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922495716] [2021-11-07 01:58:21,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:58:21,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:58:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:58:21,054 INFO L87 Difference]: Start difference. First operand 8887 states and 15001 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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)