./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG --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 cb53e49317620dbde25b1d7f6fa7078b4950e13e4d138c624b27be1c4ee0f3ad ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG --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 cb53e49317620dbde25b1d7f6fa7078b4950e13e4d138c624b27be1c4ee0f3ad .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:21:44,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:21:44,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:21:44,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:21:44,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:21:44,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:21:44,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:21:44,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:21:44,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:21:44,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:21:44,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:21:44,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:21:44,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:21:44,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:21:44,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:21:44,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:21:44,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:21:44,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:21:44,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:21:44,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:21:44,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:21:44,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:21:44,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:21:44,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:21:44,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:21:44,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:21:44,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:21:44,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:21:44,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:21:44,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:21:44,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:21:44,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:21:44,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:21:44,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:21:44,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:21:44,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:21:44,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:21:44,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:21:44,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:21:44,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:21:44,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:21:44,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:21:44,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:21:44,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:21:44,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:21:44,350 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:21:44,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:21:44,350 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:21:44,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:21:44,351 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:21:44,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:21:44,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:21:44,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:21:44,353 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:21:44,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:21:44,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:21:44,354 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:21:44,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:21:44,355 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:21:44,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:21:44,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:21:44,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:21:44,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:21:44,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:21:44,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:21:44,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:21:44,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:21:44,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:21:44,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:21:44,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:21:44,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:21:44,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:21:44,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:21:44,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:21:44,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:21:44,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:21:44,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:21:44,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:21:44,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:21:44,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:21:44,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:21:44,362 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_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb53e49317620dbde25b1d7f6fa7078b4950e13e4d138c624b27be1c4ee0f3ad [2021-10-29 05:21:44,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:21:44,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:21:44,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:21:44,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:21:44,684 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:21:44,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2021-10-29 05:21:44,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/6792f5a1b/758b7949cc5749e49de6a8888f500914/FLAG9c48dcf2c [2021-10-29 05:21:45,406 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:21:45,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2021-10-29 05:21:45,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/6792f5a1b/758b7949cc5749e49de6a8888f500914/FLAG9c48dcf2c [2021-10-29 05:21:45,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/6792f5a1b/758b7949cc5749e49de6a8888f500914 [2021-10-29 05:21:45,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:21:45,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:21:45,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:45,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:21:45,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:21:45,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:45" (1/1) ... [2021-10-29 05:21:45,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f49f35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:45, skipping insertion in model container [2021-10-29 05:21:45,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:45" (1/1) ... [2021-10-29 05:21:45,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:21:45,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:21:45,979 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_3529e0bb-03fd-4b02-ad37-ed7c84642450/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c[1605,1618] [2021-10-29 05:21:46,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:46,134 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 05:21:46,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5347ecb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:46, skipping insertion in model container [2021-10-29 05:21:46,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:46,135 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:21:46,137 INFO L168 Benchmark]: Toolchain (without parser) took 469.29 ms. Allocated memory is still 104.9 MB. Free memory was 70.0 MB in the beginning and 75.6 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:21:46,138 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:21:46,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.73 ms. Allocated memory is still 104.9 MB. Free memory was 69.7 MB in the beginning and 75.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:21:46,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.73 ms. Allocated memory is still 104.9 MB. Free memory was 69.7 MB in the beginning and 75.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 87]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:21:48,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:21:48,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:21:48,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:21:48,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:21:48,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:21:48,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:21:48,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:21:48,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:21:48,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:21:48,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:21:48,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:21:48,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:21:48,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:21:48,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:21:48,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:21:48,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:21:48,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:21:48,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:21:48,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:21:48,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:21:48,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:21:48,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:21:48,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:21:48,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:21:48,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:21:48,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:21:48,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:21:48,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:21:48,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:21:48,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:21:48,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:21:48,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:21:48,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:21:48,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:21:48,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:21:48,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:21:48,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:21:48,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:21:48,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:21:48,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:21:48,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:21:48,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:21:48,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:21:48,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:21:48,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:21:48,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:21:48,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:21:48,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:21:48,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:21:48,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:21:48,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:21:48,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:21:48,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:21:48,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:21:48,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:21:48,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:21:48,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:21:48,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:21:48,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:21:48,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:21:48,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:21:48,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:21:48,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:21:48,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:21:48,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:21:48,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:21:48,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:21:48,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:21:48,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:21:48,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:21:48,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:21:48,680 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:21:48,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:21:48,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:21:48,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:21:48,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:21:48,682 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_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb53e49317620dbde25b1d7f6fa7078b4950e13e4d138c624b27be1c4ee0f3ad [2021-10-29 05:21:49,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:21:49,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:21:49,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:21:49,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:21:49,093 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:21:49,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2021-10-29 05:21:49,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/a3943d12a/9b811a599bfd4b609d4631f299b9670a/FLAGe46dff0d5 [2021-10-29 05:21:49,871 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:21:49,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2021-10-29 05:21:49,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/a3943d12a/9b811a599bfd4b609d4631f299b9670a/FLAGe46dff0d5 [2021-10-29 05:21:50,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/data/a3943d12a/9b811a599bfd4b609d4631f299b9670a [2021-10-29 05:21:50,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:21:50,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:21:50,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:50,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:21:50,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:21:50,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:50,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b46e96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50, skipping insertion in model container [2021-10-29 05:21:50,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:50,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:21:50,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:21:50,448 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_3529e0bb-03fd-4b02-ad37-ed7c84642450/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c[1605,1618] [2021-10-29 05:21:50,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:50,709 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:21:50,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:21:50,738 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_3529e0bb-03fd-4b02-ad37-ed7c84642450/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c[1605,1618] [2021-10-29 05:21:50,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:50,829 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:21:50,846 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_3529e0bb-03fd-4b02-ad37-ed7c84642450/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c[1605,1618] [2021-10-29 05:21:50,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:50,945 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:21:50,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50 WrapperNode [2021-10-29 05:21:50,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:50,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:21:50,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:21:50,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:21:50,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:50,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:21:51,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:21:51,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:21:51,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:21:51,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:21:51,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:21:51,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:21:51,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:21:51,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (1/1) ... [2021-10-29 05:21:51,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:21:51,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:21:51,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:21:51,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:21:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:21:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:21:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:21:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:21:53,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:21:53,483 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-10-29 05:21:53,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:53 BoogieIcfgContainer [2021-10-29 05:21:53,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:21:53,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:21:53,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:21:53,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:21:53,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:21:50" (1/3) ... [2021-10-29 05:21:53,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d606fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:21:53, skipping insertion in model container [2021-10-29 05:21:53,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:50" (2/3) ... [2021-10-29 05:21:53,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d606fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:21:53, skipping insertion in model container [2021-10-29 05:21:53,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:53" (3/3) ... [2021-10-29 05:21:53,494 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2021-10-29 05:21:53,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:21:53,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:21:53,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:21:53,567 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:21:53,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:21:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:21:53,593 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:53,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:53,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1782116946, now seen corresponding path program 1 times [2021-10-29 05:21:53,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:53,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136056897] [2021-10-29 05:21:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:53,626 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:53,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:53,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:21:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:53,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:21:53,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:53,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:54,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:54,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136056897] [2021-10-29 05:21:54,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136056897] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:54,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:54,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:21:54,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860120169] [2021-10-29 05:21:54,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:21:54,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:21:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:21:54,091 INFO L87 Difference]: Start difference. First operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:54,149 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2021-10-29 05:21:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:21:54,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-29 05:21:54,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:54,166 INFO L225 Difference]: With dead ends: 172 [2021-10-29 05:21:54,167 INFO L226 Difference]: Without dead ends: 85 [2021-10-29 05:21:54,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:21:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-29 05:21:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-29 05:21:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 84 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2021-10-29 05:21:54,243 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2021-10-29 05:21:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:54,244 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2021-10-29 05:21:54,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2021-10-29 05:21:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:21:54,247 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:54,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:54,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:54,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:54,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash 735360049, now seen corresponding path program 1 times [2021-10-29 05:21:54,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:54,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627767765] [2021-10-29 05:21:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:54,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:54,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:54,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:54,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:21:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:54,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:21:54,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:54,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:54,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:54,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627767765] [2021-10-29 05:21:54,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627767765] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:54,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:54,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:21:54,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501139257] [2021-10-29 05:21:54,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:54,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:54,890 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:54,925 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-10-29 05:21:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:21:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 17 [2021-10-29 05:21:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:54,928 INFO L225 Difference]: With dead ends: 85 [2021-10-29 05:21:54,928 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 05:21:54,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 05:21:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 05:21:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-29 05:21:54,949 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2021-10-29 05:21:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:54,949 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-29 05:21:54,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-29 05:21:54,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:21:54,952 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:54,960 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] [2021-10-29 05:21:54,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:55,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:55,179 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1297648259, now seen corresponding path program 1 times [2021-10-29 05:21:55,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:55,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348293129] [2021-10-29 05:21:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:55,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:55,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:55,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:21:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:55,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:21:55,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:55,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:55,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:55,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348293129] [2021-10-29 05:21:55,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348293129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:55,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:55,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:21:55,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042807255] [2021-10-29 05:21:55,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:55,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:55,505 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:55,557 INFO L93 Difference]: Finished difference Result 128 states and 187 transitions. [2021-10-29 05:21:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:21:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-29 05:21:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:55,565 INFO L225 Difference]: With dead ends: 128 [2021-10-29 05:21:55,565 INFO L226 Difference]: Without dead ends: 95 [2021-10-29 05:21:55,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-29 05:21:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2021-10-29 05:21:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 57 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) [2021-10-29 05:21:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2021-10-29 05:21:55,583 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 22 [2021-10-29 05:21:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:55,584 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2021-10-29 05:21:55,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2021-10-29 05:21:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:21:55,587 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:55,587 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] [2021-10-29 05:21:55,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:55,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -372126526, now seen corresponding path program 1 times [2021-10-29 05:21:55,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:55,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520573203] [2021-10-29 05:21:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:55,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:55,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:55,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:55,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:21:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:56,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:21:56,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:56,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:56,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:56,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520573203] [2021-10-29 05:21:56,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520573203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:56,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:56,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:21:56,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594919379] [2021-10-29 05:21:56,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:21:56,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:21:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:21:56,149 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:56,211 INFO L93 Difference]: Finished difference Result 131 states and 192 transitions. [2021-10-29 05:21:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:21:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-29 05:21:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:56,215 INFO L225 Difference]: With dead ends: 131 [2021-10-29 05:21:56,215 INFO L226 Difference]: Without dead ends: 79 [2021-10-29 05:21:56,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:21:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-29 05:21:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-10-29 05:21:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 76 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2021-10-29 05:21:56,244 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 23 [2021-10-29 05:21:56,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:56,245 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2021-10-29 05:21:56,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2021-10-29 05:21:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:21:56,247 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:56,247 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] [2021-10-29 05:21:56,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:56,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:56,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:56,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:56,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1852423790, now seen corresponding path program 1 times [2021-10-29 05:21:56,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:56,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375174457] [2021-10-29 05:21:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:56,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:56,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:56,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:56,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:21:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:56,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:21:56,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:56,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:56,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:56,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375174457] [2021-10-29 05:21:56,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375174457] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:56,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:56,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:21:56,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641990724] [2021-10-29 05:21:56,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:21:56,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:21:56,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:56,882 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:57,018 INFO L93 Difference]: Finished difference Result 371 states and 539 transitions. [2021-10-29 05:21:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:21:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 05:21:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:57,021 INFO L225 Difference]: With dead ends: 371 [2021-10-29 05:21:57,022 INFO L226 Difference]: Without dead ends: 300 [2021-10-29 05:21:57,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:21:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-29 05:21:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 140. [2021-10-29 05:21:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2021-10-29 05:21:57,041 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 25 [2021-10-29 05:21:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:57,042 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 196 transitions. [2021-10-29 05:21:57,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 196 transitions. [2021-10-29 05:21:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:21:57,043 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:57,044 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] [2021-10-29 05:21:57,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:57,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:57,257 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2056230884, now seen corresponding path program 1 times [2021-10-29 05:21:57,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:57,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553847340] [2021-10-29 05:21:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:57,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:57,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:57,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:21:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:57,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:21:57,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:57,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:57,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:57,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553847340] [2021-10-29 05:21:57,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553847340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:57,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:57,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:21:57,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840499082] [2021-10-29 05:21:57,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:21:57,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:21:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:57,689 INFO L87 Difference]: Start difference. First operand 140 states and 196 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:57,851 INFO L93 Difference]: Finished difference Result 392 states and 553 transitions. [2021-10-29 05:21:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:21:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 05:21:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:57,854 INFO L225 Difference]: With dead ends: 392 [2021-10-29 05:21:57,854 INFO L226 Difference]: Without dead ends: 390 [2021-10-29 05:21:57,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:21:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-29 05:21:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 140. [2021-10-29 05:21:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.39568345323741) internal successors, (194), 139 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2021-10-29 05:21:57,873 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 26 [2021-10-29 05:21:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:57,873 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2021-10-29 05:21:57,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2021-10-29 05:21:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:21:57,875 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:57,875 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] [2021-10-29 05:21:57,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:58,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:58,090 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:58,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash 437867349, now seen corresponding path program 1 times [2021-10-29 05:21:58,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:58,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803321541] [2021-10-29 05:21:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:58,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:58,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:58,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:21:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:58,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:21:58,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:58,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:58,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:58,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803321541] [2021-10-29 05:21:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803321541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:58,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:58,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:21:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714834642] [2021-10-29 05:21:58,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:21:58,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:21:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:58,550 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:58,623 INFO L93 Difference]: Finished difference Result 426 states and 588 transitions. [2021-10-29 05:21:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:21:58,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-29 05:21:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:58,626 INFO L225 Difference]: With dead ends: 426 [2021-10-29 05:21:58,626 INFO L226 Difference]: Without dead ends: 292 [2021-10-29 05:21:58,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:21:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-29 05:21:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 146. [2021-10-29 05:21:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.3793103448275863) internal successors, (200), 145 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 200 transitions. [2021-10-29 05:21:58,647 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 200 transitions. Word has length 33 [2021-10-29 05:21:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:58,647 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 200 transitions. [2021-10-29 05:21:58,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 200 transitions. [2021-10-29 05:21:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:21:58,649 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:58,649 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] [2021-10-29 05:21:58,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:58,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:58,862 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -148938665, now seen corresponding path program 1 times [2021-10-29 05:21:58,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:58,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870125259] [2021-10-29 05:21:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:58,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:58,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:58,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:58,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:21:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:59,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:21:59,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:59,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:59,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:59,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870125259] [2021-10-29 05:21:59,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870125259] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:59,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:59,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:21:59,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869664792] [2021-10-29 05:21:59,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:21:59,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:21:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:21:59,328 INFO L87 Difference]: Start difference. First operand 146 states and 200 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:59,392 INFO L93 Difference]: Finished difference Result 444 states and 606 transitions. [2021-10-29 05:21:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:21:59,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-29 05:21:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:59,395 INFO L225 Difference]: With dead ends: 444 [2021-10-29 05:21:59,395 INFO L226 Difference]: Without dead ends: 304 [2021-10-29 05:21:59,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:21:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-29 05:21:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 150. [2021-10-29 05:21:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.3691275167785235) internal successors, (204), 149 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 204 transitions. [2021-10-29 05:21:59,417 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 204 transitions. Word has length 33 [2021-10-29 05:21:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:59,417 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 204 transitions. [2021-10-29 05:21:59,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 204 transitions. [2021-10-29 05:21:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:21:59,419 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:59,419 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] [2021-10-29 05:21:59,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:59,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:59,638 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:21:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1428802343, now seen corresponding path program 1 times [2021-10-29 05:21:59,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:59,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109242201] [2021-10-29 05:21:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:59,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:59,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:59,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:59,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:21:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:59,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:21:59,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:00,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:00,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:00,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109242201] [2021-10-29 05:22:00,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109242201] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:00,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:00,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 05:22:00,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942048554] [2021-10-29 05:22:00,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:00,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:00,123 INFO L87 Difference]: Start difference. First operand 150 states and 204 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:00,195 INFO L93 Difference]: Finished difference Result 504 states and 688 transitions. [2021-10-29 05:22:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-29 05:22:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:00,198 INFO L225 Difference]: With dead ends: 504 [2021-10-29 05:22:00,198 INFO L226 Difference]: Without dead ends: 360 [2021-10-29 05:22:00,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-29 05:22:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 272. [2021-10-29 05:22:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.3542435424354244) internal successors, (367), 271 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 367 transitions. [2021-10-29 05:22:00,241 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 367 transitions. Word has length 33 [2021-10-29 05:22:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:00,241 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 367 transitions. [2021-10-29 05:22:00,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 367 transitions. [2021-10-29 05:22:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 05:22:00,243 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:00,243 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] [2021-10-29 05:22:00,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:00,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:00,456 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash -271506405, now seen corresponding path program 1 times [2021-10-29 05:22:00,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:00,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327919078] [2021-10-29 05:22:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:00,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:00,458 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:00,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:22:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:00,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:22:00,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:00,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:00,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:00,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327919078] [2021-10-29 05:22:00,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327919078] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:00,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:00,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:22:00,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339547457] [2021-10-29 05:22:00,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:22:00,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:00,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:22:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:22:00,965 INFO L87 Difference]: Start difference. First operand 272 states and 367 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:03,836 INFO L93 Difference]: Finished difference Result 1200 states and 1600 transitions. [2021-10-29 05:22:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:22:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 34 [2021-10-29 05:22:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:03,842 INFO L225 Difference]: With dead ends: 1200 [2021-10-29 05:22:03,842 INFO L226 Difference]: Without dead ends: 934 [2021-10-29 05:22:03,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:22:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-29 05:22:03,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 272. [2021-10-29 05:22:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.3284132841328413) internal successors, (360), 271 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 360 transitions. [2021-10-29 05:22:03,889 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 360 transitions. Word has length 34 [2021-10-29 05:22:03,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:03,890 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 360 transitions. [2021-10-29 05:22:03,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 360 transitions. [2021-10-29 05:22:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-29 05:22:03,891 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:03,891 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:03,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:04,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:04,106 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1907454321, now seen corresponding path program 1 times [2021-10-29 05:22:04,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:04,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001369314] [2021-10-29 05:22:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:04,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:04,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:04,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:04,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:22:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:22:05,503 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:22:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:22:07,043 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:22:07,044 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:22:07,045 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:07,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:07,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:07,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:07,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:07,279 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:07,282 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:22:07,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:22:07 BoogieIcfgContainer [2021-10-29 05:22:07,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:22:07,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:22:07,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:22:07,479 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:22:07,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:53" (3/4) ... [2021-10-29 05:22:07,481 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:22:07,650 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:22:07,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:22:07,653 INFO L168 Benchmark]: Toolchain (without parser) took 17476.49 ms. Allocated memory was 58.7 MB in the beginning and 94.4 MB in the end (delta: 35.7 MB). Free memory was 35.7 MB in the beginning and 59.0 MB in the end (delta: -23.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,653 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:07,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.71 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 40.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.49 ms. Allocated memory is still 71.3 MB. Free memory was 39.8 MB in the beginning and 36.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,655 INFO L168 Benchmark]: Boogie Preprocessor took 109.92 ms. Allocated memory is still 71.3 MB. Free memory was 36.7 MB in the beginning and 52.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,655 INFO L168 Benchmark]: RCFGBuilder took 2314.11 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 37.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,655 INFO L168 Benchmark]: TraceAbstraction took 13990.62 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 36.7 MB in the beginning and 38.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,656 INFO L168 Benchmark]: Witness Printer took 172.24 ms. Allocated memory is still 94.4 MB. Free memory was 38.3 MB in the beginning and 59.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:07,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 768.71 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 40.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.49 ms. Allocated memory is still 71.3 MB. Free memory was 39.8 MB in the beginning and 36.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.92 ms. Allocated memory is still 71.3 MB. Free memory was 36.7 MB in the beginning and 52.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2314.11 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 37.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13990.62 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 36.7 MB in the beginning and 38.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * Witness Printer took 172.24 ms. Allocated memory is still 94.4 MB. Free memory was 38.3 MB in the beginning and 59.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L228] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L508] int pumpRunning = 0; [L509] int systemActive = 1; [L703] int waterLevel = 1; [L704] int methaneLevelCritical = 0; [L861] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L934] int retValue_acc ; [L935] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] int retValue_acc ; [L855] retValue_acc = 1 [L856] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L941] tmp = valid_product() [L943] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] int splverifierCounter ; [L433] int tmp ; [L434] int tmp___0 ; [L435] int tmp___1 ; [L436] int tmp___2 ; [L439] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L441] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L443] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L449] tmp = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L721] COND TRUE waterLevel < 2 [L722] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L459] tmp___0 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L469] tmp___2 = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp___2) [L697] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L516] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L523] COND TRUE \read(systemActive) [L545] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] COND TRUE ! pumpRunning [L660] int retValue_acc ; [L661] int tmp ; [L662] int tmp___0 ; [L783] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L786] COND FALSE !(waterLevel < 2) [L790] retValue_acc = 0 [L791] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] tmp = isHighWaterSensorDry() [L668] COND FALSE !(\read(tmp)) [L671] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L673] retValue_acc = tmp___0 [L674] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L550] tmp = isHighWaterLevel() [L552] COND TRUE \read(tmp) [L579] int tmp ; [L604] int retValue_acc ; [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L608] retValue_acc = isMethaneLevelCritical() [L610] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L583] tmp = isMethaneAlarm() [L585] COND FALSE !(\read(tmp)) [L573] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L798] int tmp ; [L799] int tmp___0 ; [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L441] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L443] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L449] tmp = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L459] tmp___0 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L733] COND FALSE !(\read(methaneLevelCritical)) [L736] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp___2 = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp___2) [L697] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L709] COND TRUE waterLevel > 0 [L710] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L523] COND TRUE \read(systemActive) [L545] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L548] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L798] int tmp ; [L799] int tmp___0 ; [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L803] tmp = isMethaneLevelCritical() [L805] COND TRUE \read(tmp) [L615] int retValue_acc ; [L618] retValue_acc = pumpRunning [L619] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L807] tmp___0 = isPumpRunning() [L809] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L54] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 54]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 881 SDtfs, 1353 SDslu, 2142 SDs, 0 SdLazy, 232 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 533 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=9, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 1499 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 810 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2048 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:22:07,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3529e0bb-03fd-4b02-ad37-ed7c84642450/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...