./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f ............................................................................................................................................ 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_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:10:37,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:10:37,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:10:37,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:10:37,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:10:37,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:10:37,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:10:37,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:10:37,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:10:37,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:10:37,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:10:37,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:10:37,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:10:37,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:10:37,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:10:37,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:10:37,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:10:37,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:10:37,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:10:37,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:10:37,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:10:37,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:10:37,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:10:37,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:10:37,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:10:37,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:10:37,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:10:37,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:10:37,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:10:37,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:10:37,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:10:37,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:10:37,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:10:37,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:10:37,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:10:37,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:10:37,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:10:37,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:10:37,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:10:37,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:10:37,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:10:37,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:10:37,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:10:37,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:10:37,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:10:37,527 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:10:37,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:10:37,527 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:10:37,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:10:37,527 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:10:37,531 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:10:37,531 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:10:37,531 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:10:37,531 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:10:37,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:10:37,532 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:10:37,532 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:10:37,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:10:37,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:10:37,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:10:37,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:10:37,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:10:37,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:10:37,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:10:37,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:10:37,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:10:37,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:10:37,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:10:37,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:10:37,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:10:37,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:10:37,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:10:37,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:10:37,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:10:37,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:10:37,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:10:37,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:10:37,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:10:37,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:10:37,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:10:37,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:10:37,538 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_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f [2021-10-24 10:10:37,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:10:37,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:10:37,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:10:37,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:10:37,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:10:37,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-24 10:10:37,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/9d8b6cdec/b9881bc0d54649469d75c5719dcbeb19/FLAGde17fb4c5 [2021-10-24 10:10:38,378 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:10:38,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-24 10:10:38,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/9d8b6cdec/b9881bc0d54649469d75c5719dcbeb19/FLAGde17fb4c5 [2021-10-24 10:10:38,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/9d8b6cdec/b9881bc0d54649469d75c5719dcbeb19 [2021-10-24 10:10:38,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:10:38,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:10:38,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:10:38,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:10:38,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:10:38,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:38" (1/1) ... [2021-10-24 10:10:38,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cf12c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:38, skipping insertion in model container [2021-10-24 10:10:38,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:38" (1/1) ... [2021-10-24 10:10:38,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:10:38,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:10:39,008 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_7b25db43-efe2-4c67-b751-5df2d0353831/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-24 10:10:39,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:10:39,039 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 10:10:39,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@114519e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:39, skipping insertion in model container [2021-10-24 10:10:39,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:10:39,040 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:10:39,043 INFO L168 Benchmark]: Toolchain (without parser) took 278.71 ms. Allocated memory is still 136.3 MB. Free memory was 103.6 MB in the beginning and 112.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:10:39,047 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:10:39,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.62 ms. Allocated memory is still 136.3 MB. Free memory was 103.4 MB in the beginning and 112.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:10:39,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.62 ms. Allocated memory is still 136.3 MB. Free memory was 103.4 MB in the beginning and 112.4 MB in the end (delta: -9.0 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: 135]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:10:41,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:10:41,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:10:41,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:10:41,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:10:41,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:10:41,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:10:41,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:10:41,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:10:41,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:10:41,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:10:41,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:10:41,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:10:41,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:10:41,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:10:41,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:10:41,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:10:41,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:10:41,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:10:41,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:10:41,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:10:41,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:10:41,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:10:41,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:10:41,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:10:41,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:10:41,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:10:41,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:10:41,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:10:41,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:10:41,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:10:41,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:10:41,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:10:41,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:10:41,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:10:41,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:10:41,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:10:41,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:10:41,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:10:41,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:10:41,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:10:41,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:10:41,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:10:41,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:10:41,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:10:41,480 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:10:41,480 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:10:41,480 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:10:41,480 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:10:41,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:10:41,481 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:10:41,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:10:41,484 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:10:41,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:10:41,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:10:41,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:10:41,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:10:41,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:10:41,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:10:41,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:10:41,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:10:41,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:10:41,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:10:41,487 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:10:41,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:10:41,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:10:41,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:10:41,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:10:41,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:10:41,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:10:41,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:10:41,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:10:41,490 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:10:41,490 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:10:41,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:10:41,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:10:41,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:10:41,492 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_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f [2021-10-24 10:10:41,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:10:41,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:10:41,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:10:41,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:10:41,923 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:10:41,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-24 10:10:42,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/c52efa0c2/195467633f2344b283e4dca22297e3e2/FLAGa05b00f18 [2021-10-24 10:10:42,614 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:10:42,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-24 10:10:42,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/c52efa0c2/195467633f2344b283e4dca22297e3e2/FLAGa05b00f18 [2021-10-24 10:10:42,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/data/c52efa0c2/195467633f2344b283e4dca22297e3e2 [2021-10-24 10:10:42,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:10:42,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:10:42,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:10:42,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:10:42,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:10:42,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:42" (1/1) ... [2021-10-24 10:10:42,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e491ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:42, skipping insertion in model container [2021-10-24 10:10:42,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:42" (1/1) ... [2021-10-24 10:10:42,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:10:43,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:10:43,243 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_7b25db43-efe2-4c67-b751-5df2d0353831/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-24 10:10:43,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:10:43,265 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:10:43,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:10:43,308 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_7b25db43-efe2-4c67-b751-5df2d0353831/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-24 10:10:43,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:10:43,319 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:10:43,348 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_7b25db43-efe2-4c67-b751-5df2d0353831/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-24 10:10:43,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:10:43,381 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:10:43,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43 WrapperNode [2021-10-24 10:10:43,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:10:43,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:10:43,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:10:43,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:10:43,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:10:43,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:10:43,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:10:43,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:10:43,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:10:43,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:10:43,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:10:43,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:10:43,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (1/1) ... [2021-10-24 10:10:43,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:10:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:10:43,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:10:43,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:10:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:10:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:10:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:10:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 10:10:43,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 10:10:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 10:10:43,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 10:10:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-24 10:10:43,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-24 10:10:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-24 10:10:43,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-24 10:10:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 10:10:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 10:10:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:10:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:10:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:10:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:10:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:10:43,629 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:10:45,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:10:45,251 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-24 10:10:45,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:45 BoogieIcfgContainer [2021-10-24 10:10:45,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:10:45,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:10:45,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:10:45,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:10:45,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:10:42" (1/3) ... [2021-10-24 10:10:45,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e14efc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:45, skipping insertion in model container [2021-10-24 10:10:45,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:43" (2/3) ... [2021-10-24 10:10:45,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e14efc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:45, skipping insertion in model container [2021-10-24 10:10:45,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:45" (3/3) ... [2021-10-24 10:10:45,263 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2021-10-24 10:10:45,268 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:10:45,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:10:45,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:10:45,269 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:10:45,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,325 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,329 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,330 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,331 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,331 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,332 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,332 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,332 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,332 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,332 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,332 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,333 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,334 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,335 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,335 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,335 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,335 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,335 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,335 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,336 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,336 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,336 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,336 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,337 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,338 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,338 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,338 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,339 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,339 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,339 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,339 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,339 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,340 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,340 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,340 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,340 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,340 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,341 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,341 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,341 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,341 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,341 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,341 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,342 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,342 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,343 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,343 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,350 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,356 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,357 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,357 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,360 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,363 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,363 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,363 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,363 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,364 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,365 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,365 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,367 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:10:45,377 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-24 10:10:45,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:10:45,442 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:10:45,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-24 10:10:45,467 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:10:45,481 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 193 transitions, 418 flow [2021-10-24 10:10:45,484 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 193 transitions, 418 flow [2021-10-24 10:10:45,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 193 transitions, 418 flow [2021-10-24 10:10:45,607 INFO L129 PetriNetUnfolder]: 18/189 cut-off events. [2021-10-24 10:10:45,607 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-24 10:10:45,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 189 events. 18/189 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2021-10-24 10:10:45,617 INFO L116 LiptonReduction]: Number of co-enabled transitions 1224 [2021-10-24 10:11:12,982 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2021-10-24 10:11:14,549 INFO L131 LiptonReduction]: Checked pairs total: 2361 [2021-10-24 10:11:14,549 INFO L133 LiptonReduction]: Total number of compositions: 184 [2021-10-24 10:11:14,557 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 36 transitions, 104 flow [2021-10-24 10:11:14,582 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 10:11:14,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:14,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:14,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:14,603 INFO L82 PathProgramCache]: Analyzing trace with hash -956661347, now seen corresponding path program 1 times [2021-10-24 10:11:14,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:14,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63270271] [2021-10-24 10:11:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:14,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:14,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:14,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:14,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:11:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:14,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:11:14,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:14,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:15,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:15,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63270271] [2021-10-24 10:11:15,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63270271] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:11:15,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:11:15,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-24 10:11:15,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961161639] [2021-10-24 10:11:15,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:11:15,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:11:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:11:15,094 INFO L87 Difference]: Start difference. First operand has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 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 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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) [2021-10-24 10:11:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:15,155 INFO L93 Difference]: Finished difference Result 331 states and 1301 transitions. [2021-10-24 10:11:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:11:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 [2021-10-24 10:11:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:15,173 INFO L225 Difference]: With dead ends: 331 [2021-10-24 10:11:15,173 INFO L226 Difference]: Without dead ends: 314 [2021-10-24 10:11:15,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:11:15,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-24 10:11:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 234. [2021-10-24 10:11:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.9141630901287554) internal successors, (912), 233 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 912 transitions. [2021-10-24 10:11:15,285 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 912 transitions. Word has length 23 [2021-10-24 10:11:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:15,286 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 912 transitions. [2021-10-24 10:11:15,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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) [2021-10-24 10:11:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 912 transitions. [2021-10-24 10:11:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:11:15,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:15,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:15,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:15,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:15,505 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash -617843621, now seen corresponding path program 1 times [2021-10-24 10:11:15,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:15,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723478886] [2021-10-24 10:11:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:15,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:15,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:15,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:15,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:11:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:15,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:11:15,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:15,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:16,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:16,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723478886] [2021-10-24 10:11:16,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723478886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:11:16,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:11:16,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:11:16,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690299076] [2021-10-24 10:11:16,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:11:16,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:11:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:11:16,005 INFO L87 Difference]: Start difference. First operand 234 states and 912 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:16,280 INFO L93 Difference]: Finished difference Result 448 states and 1606 transitions. [2021-10-24 10:11:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:11:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 10:11:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:16,287 INFO L225 Difference]: With dead ends: 448 [2021-10-24 10:11:16,287 INFO L226 Difference]: Without dead ends: 404 [2021-10-24 10:11:16,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:11:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-24 10:11:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 330. [2021-10-24 10:11:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.878419452887538) internal successors, (1276), 329 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1276 transitions. [2021-10-24 10:11:16,315 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1276 transitions. Word has length 25 [2021-10-24 10:11:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:16,316 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1276 transitions. [2021-10-24 10:11:16,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1276 transitions. [2021-10-24 10:11:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:11:16,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:16,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:16,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:16,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:16,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash -438178697, now seen corresponding path program 1 times [2021-10-24 10:11:16,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:16,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263627301] [2021-10-24 10:11:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:16,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:16,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:16,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:11:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:16,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:11:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:16,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:16,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:16,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263627301] [2021-10-24 10:11:16,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263627301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:16,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [788598591] [2021-10-24 10:11:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:16,973 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:16,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:11:16,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:11:16,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-24 10:11:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:17,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:11:17,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:17,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:17,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [788598591] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:11:17,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:11:17,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [3, 3] total 8 [2021-10-24 10:11:17,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128007200] [2021-10-24 10:11:17,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:11:17,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:17,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:11:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:11:17,551 INFO L87 Difference]: Start difference. First operand 330 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:17,686 INFO L93 Difference]: Finished difference Result 630 states and 2237 transitions. [2021-10-24 10:11:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:11:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 10:11:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:17,695 INFO L225 Difference]: With dead ends: 630 [2021-10-24 10:11:17,695 INFO L226 Difference]: Without dead ends: 524 [2021-10-24 10:11:17,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:11:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-24 10:11:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 484. [2021-10-24 10:11:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.6832298136645965) internal successors, (1779), 483 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1779 transitions. [2021-10-24 10:11:17,723 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1779 transitions. Word has length 25 [2021-10-24 10:11:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:17,723 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1779 transitions. [2021-10-24 10:11:17,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1779 transitions. [2021-10-24 10:11:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 10:11:17,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:17,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:17,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:17,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:18,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:18,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:18,136 INFO L82 PathProgramCache]: Analyzing trace with hash 107778399, now seen corresponding path program 1 times [2021-10-24 10:11:18,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:18,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654865663] [2021-10-24 10:11:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:18,138 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:18,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:18,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:11:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:18,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 10:11:18,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:18,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:18,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:18,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654865663] [2021-10-24 10:11:18,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654865663] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:11:18,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:11:18,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:11:18,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885411545] [2021-10-24 10:11:18,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:11:18,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:11:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:11:18,581 INFO L87 Difference]: Start difference. First operand 484 states and 1779 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:18,705 INFO L93 Difference]: Finished difference Result 685 states and 2379 transitions. [2021-10-24 10:11:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:11:18,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 [2021-10-24 10:11:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:18,716 INFO L225 Difference]: With dead ends: 685 [2021-10-24 10:11:18,716 INFO L226 Difference]: Without dead ends: 638 [2021-10-24 10:11:18,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:11:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-24 10:11:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 514. [2021-10-24 10:11:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.682261208576998) internal successors, (1889), 513 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1889 transitions. [2021-10-24 10:11:18,766 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1889 transitions. Word has length 26 [2021-10-24 10:11:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:18,767 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1889 transitions. [2021-10-24 10:11:18,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1889 transitions. [2021-10-24 10:11:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 10:11:18,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:18,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:18,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:18,983 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:18,984 INFO L82 PathProgramCache]: Analyzing trace with hash 797000722, now seen corresponding path program 1 times [2021-10-24 10:11:18,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:18,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442670531] [2021-10-24 10:11:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:18,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:18,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:19,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:11:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:19,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:11:19,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:19,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:19,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:19,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442670531] [2021-10-24 10:11:19,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442670531] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:19,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [86805923] [2021-10-24 10:11:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:19,428 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:19,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:11:19,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:11:19,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-24 10:11:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:19,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:11:19,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:20,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:20,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [86805923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:20,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119220395] [2021-10-24 10:11:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:20,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:11:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:11:20,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:11:20,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 10:11:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:20,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:11:20,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:21,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:11:21,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119220395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:21,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:11:21,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 6, 7, 6, 5] total 14 [2021-10-24 10:11:21,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25768580] [2021-10-24 10:11:21,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 10:11:21,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 10:11:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:11:21,704 INFO L87 Difference]: Start difference. First operand 514 states and 1889 transitions. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:22,506 INFO L93 Difference]: Finished difference Result 1730 states and 6491 transitions. [2021-10-24 10:11:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 10:11:22,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 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 [2021-10-24 10:11:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:22,527 INFO L225 Difference]: With dead ends: 1730 [2021-10-24 10:11:22,527 INFO L226 Difference]: Without dead ends: 1632 [2021-10-24 10:11:22,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 468.6ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-10-24 10:11:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-10-24 10:11:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 682. [2021-10-24 10:11:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 3.9676945668135097) internal successors, (2702), 681 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2702 transitions. [2021-10-24 10:11:22,578 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2702 transitions. Word has length 26 [2021-10-24 10:11:22,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:22,578 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 2702 transitions. [2021-10-24 10:11:22,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2702 transitions. [2021-10-24 10:11:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:11:22,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:22,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:22,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:22,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-24 10:11:22,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:23,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:23,197 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1205895199, now seen corresponding path program 1 times [2021-10-24 10:11:23,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:23,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065533597] [2021-10-24 10:11:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:23,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:23,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:23,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:23,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:11:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:23,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:11:23,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:23,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:23,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:23,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065533597] [2021-10-24 10:11:23,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065533597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:11:23,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:11:23,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 10:11:23,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766315587] [2021-10-24 10:11:23,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:11:23,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:11:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:11:23,861 INFO L87 Difference]: Start difference. First operand 682 states and 2702 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 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) [2021-10-24 10:11:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:24,197 INFO L93 Difference]: Finished difference Result 960 states and 3432 transitions. [2021-10-24 10:11:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:11:24,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 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 27 [2021-10-24 10:11:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:24,208 INFO L225 Difference]: With dead ends: 960 [2021-10-24 10:11:24,208 INFO L226 Difference]: Without dead ends: 908 [2021-10-24 10:11:24,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:11:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-24 10:11:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 590. [2021-10-24 10:11:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.692699490662139) internal successors, (2175), 589 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 2175 transitions. [2021-10-24 10:11:24,240 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 2175 transitions. Word has length 27 [2021-10-24 10:11:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:24,240 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 2175 transitions. [2021-10-24 10:11:24,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 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) [2021-10-24 10:11:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 2175 transitions. [2021-10-24 10:11:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:11:24,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:24,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:24,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:24,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:24,457 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:24,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1534868317, now seen corresponding path program 2 times [2021-10-24 10:11:24,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:24,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977042328] [2021-10-24 10:11:24,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 10:11:24,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:24,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:24,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:11:24,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 10:11:24,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 10:11:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:11:24,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:25,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:25,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:25,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977042328] [2021-10-24 10:11:25,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977042328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:25,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792717411] [2021-10-24 10:11:25,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 10:11:25,404 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:11:25,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:11:25,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-24 10:11:26,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 10:11:26,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 10:11:26,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:11:26,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:26,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:26,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1792717411] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-24 10:11:26,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-24 10:11:26,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 4] total 12 [2021-10-24 10:11:26,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855299019] [2021-10-24 10:11:26,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:11:26,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:11:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:11:26,443 INFO L87 Difference]: Start difference. First operand 590 states and 2175 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:26,689 INFO L93 Difference]: Finished difference Result 728 states and 2497 transitions. [2021-10-24 10:11:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:11:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 10:11:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:26,703 INFO L225 Difference]: With dead ends: 728 [2021-10-24 10:11:26,703 INFO L226 Difference]: Without dead ends: 691 [2021-10-24 10:11:26,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:11:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-10-24 10:11:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 483. [2021-10-24 10:11:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 3.7261410788381744) internal successors, (1796), 482 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1796 transitions. [2021-10-24 10:11:26,724 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1796 transitions. Word has length 27 [2021-10-24 10:11:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:26,725 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1796 transitions. [2021-10-24 10:11:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1796 transitions. [2021-10-24 10:11:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:11:26,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:26,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:26,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:26,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:27,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:27,141 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash 30488815, now seen corresponding path program 1 times [2021-10-24 10:11:27,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:27,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439672790] [2021-10-24 10:11:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:27,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:27,143 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:27,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 10:11:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:27,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:11:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:27,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:27,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:27,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439672790] [2021-10-24 10:11:27,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439672790] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:27,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1039473480] [2021-10-24 10:11:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:27,948 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:11:27,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:11:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-24 10:11:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:28,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:11:28,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:28,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:11:28,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1039473480] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:28,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105187706] [2021-10-24 10:11:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:28,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:11:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:11:28,849 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:11:28,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-24 10:11:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:29,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:11:29,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:29,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:11:29,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105187706] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:29,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:11:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3, 4, 3, 3] total 12 [2021-10-24 10:11:29,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865641595] [2021-10-24 10:11:29,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-24 10:11:29,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-24 10:11:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:11:29,434 INFO L87 Difference]: Start difference. First operand 483 states and 1796 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:29,925 INFO L93 Difference]: Finished difference Result 1183 states and 4022 transitions. [2021-10-24 10:11:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:11:29,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 10:11:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:29,936 INFO L225 Difference]: With dead ends: 1183 [2021-10-24 10:11:29,936 INFO L226 Difference]: Without dead ends: 956 [2021-10-24 10:11:29,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 205.8ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-24 10:11:29,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-24 10:11:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 502. [2021-10-24 10:11:29,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 3.940119760479042) internal successors, (1974), 501 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1974 transitions. [2021-10-24 10:11:29,964 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1974 transitions. Word has length 27 [2021-10-24 10:11:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:29,965 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1974 transitions. [2021-10-24 10:11:29,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1974 transitions. [2021-10-24 10:11:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-24 10:11:29,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:29,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:30,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:30,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:30,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-24 10:11:30,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:30,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:30,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1549545435, now seen corresponding path program 1 times [2021-10-24 10:11:30,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:30,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815066016] [2021-10-24 10:11:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:30,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:30,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:30,586 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:30,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-24 10:11:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:30,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:11:31,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:31,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:31,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:31,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815066016] [2021-10-24 10:11:31,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815066016] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-24 10:11:31,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:11:31,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-10-24 10:11:31,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951996073] [2021-10-24 10:11:31,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:11:31,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:11:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:11:31,764 INFO L87 Difference]: Start difference. First operand 502 states and 1974 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:32,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:32,254 INFO L93 Difference]: Finished difference Result 638 states and 2547 transitions. [2021-10-24 10:11:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:11:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-10-24 10:11:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:32,263 INFO L225 Difference]: With dead ends: 638 [2021-10-24 10:11:32,264 INFO L226 Difference]: Without dead ends: 638 [2021-10-24 10:11:32,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 301.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:11:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-24 10:11:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 440. [2021-10-24 10:11:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.917995444191344) internal successors, (1720), 439 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1720 transitions. [2021-10-24 10:11:32,287 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1720 transitions. Word has length 29 [2021-10-24 10:11:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:32,287 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1720 transitions. [2021-10-24 10:11:32,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1720 transitions. [2021-10-24 10:11:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-24 10:11:32,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:32,290 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:32,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-24 10:11:32,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:32,504 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1369880511, now seen corresponding path program 1 times [2021-10-24 10:11:32,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:32,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877321415] [2021-10-24 10:11:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:32,505 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:32,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:32,506 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:32,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-24 10:11:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:32,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 10:11:32,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:33,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:33,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:11:33,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877321415] [2021-10-24 10:11:33,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877321415] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:33,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [390514214] [2021-10-24 10:11:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:33,691 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:11:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:11:33,692 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:11:33,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-24 10:11:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:34,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:11:34,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:34,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:34,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [390514214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:34,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778498936] [2021-10-24 10:11:34,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:34,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:11:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:11:34,859 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:11:34,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-24 10:11:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:11:35,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:35,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:11:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:11:35,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778498936] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:11:35,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:11:35,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-10-24 10:11:35,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525661411] [2021-10-24 10:11:35,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 10:11:35,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:11:35,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 10:11:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:11:35,963 INFO L87 Difference]: Start difference. First operand 440 states and 1720 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:11:36,303 INFO L93 Difference]: Finished difference Result 960 states and 3832 transitions. [2021-10-24 10:11:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:11:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-24 10:11:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:11:36,317 INFO L225 Difference]: With dead ends: 960 [2021-10-24 10:11:36,317 INFO L226 Difference]: Without dead ends: 960 [2021-10-24 10:11:36,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 281.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:11:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-24 10:11:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 560. [2021-10-24 10:11:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.9838998211091234) internal successors, (2227), 559 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:36,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 2227 transitions. [2021-10-24 10:11:36,346 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 2227 transitions. Word has length 29 [2021-10-24 10:11:36,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:11:36,346 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 2227 transitions. [2021-10-24 10:11:36,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:11:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 2227 transitions. [2021-10-24 10:11:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 10:11:36,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:11:36,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:11:36,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:36,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:36,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-24 10:11:36,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:11:36,955 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 10:11:36,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:11:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1030863103, now seen corresponding path program 1 times [2021-10-24 10:11:36,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:11:36,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063309828] [2021-10-24 10:11:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:11:36,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:11:36,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:11:36,957 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:11:36,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-24 10:11:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:11:37,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-24 10:11:37,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:11:37,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:11:37,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:11:37,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:11:37,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 87 [2021-10-24 10:11:38,290 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-24 10:11:38,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-24 10:14:54,772 WARN L207 SmtUtils]: Spent 3.19 m on a formula simplification. DAG size of input: 375 DAG size of output: 130 [2021-10-24 10:14:54,773 INFO L354 Elim1Store]: treesize reduction 2036, result has 18.2 percent of original size [2021-10-24 10:14:54,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 132 treesize of output 508 [2021-10-24 10:18:56,975 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-24 10:18:56,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:18:56,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063309828] [2021-10-24 10:18:56,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-24 10:18:56,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1761509056] [2021-10-24 10:18:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:18:56,980 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:18:56,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:18:56,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-24 10:18:56,981 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:18:56,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-24 10:18:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:18:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-24 10:18:58,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:18:58,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-24 10:18:58,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895930781] [2021-10-24 10:18:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:18:58,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:18:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:18:58,673 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:18:58,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-24 10:18:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:18:59,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-24 10:18:59,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:18:59,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-24 10:18:59,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:18:59,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:18:59,454 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:18:59,455 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:18:59,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:18:59,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:18:59,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:18:59,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:18:59,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-24 10:18:59,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-24 10:18:59,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-10-24 10:18:59,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:00,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b25db43-efe2-4c67-b751-5df2d0353831/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:00,065 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:19:00,065 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:19:00,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:19:00 BasicIcfg [2021-10-24 10:19:00,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:19:00,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:19:00,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:19:00,101 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:19:00,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:45" (3/4) ... [2021-10-24 10:19:00,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:19:00,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:19:00,116 INFO L168 Benchmark]: Toolchain (without parser) took 497152.63 ms. Allocated memory was 69.2 MB in the beginning and 130.0 MB in the end (delta: 60.8 MB). Free memory was 48.1 MB in the beginning and 53.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,116 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:19:00,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.78 ms. Allocated memory is still 69.2 MB. Free memory was 48.0 MB in the beginning and 46.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.11 ms. Allocated memory is still 69.2 MB. Free memory was 46.5 MB in the beginning and 44.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,118 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 69.2 MB. Free memory was 44.0 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,118 INFO L168 Benchmark]: RCFGBuilder took 1755.83 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 56.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,119 INFO L168 Benchmark]: TraceAbstraction took 494843.97 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 55.9 MB in the beginning and 54.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,119 INFO L168 Benchmark]: Witness Printer took 14.85 ms. Allocated memory is still 130.0 MB. Free memory was 54.6 MB in the beginning and 53.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:00,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.78 ms. Allocated memory is still 69.2 MB. Free memory was 48.0 MB in the beginning and 46.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.11 ms. Allocated memory is still 69.2 MB. Free memory was 46.5 MB in the beginning and 44.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 69.2 MB. Free memory was 44.0 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1755.83 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 56.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 494843.97 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 55.9 MB in the beginning and 54.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 14.85 ms. Allocated memory is still 130.0 MB. Free memory was 54.6 MB in the beginning and 53.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29065.2ms, 188 PlacesBefore, 43 PlacesAfterwards, 193 TransitionsBefore, 36 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 7 FixpointIterations, 118 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 184 TotalNumberOfCompositions, 2361 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1864, positive: 1784, positive conditional: 0, positive unconditional: 1784, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 882, positive: 862, positive conditional: 0, positive unconditional: 862, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 882, positive: 860, positive conditional: 0, positive unconditional: 860, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1055, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1049, negative conditional: 0, negative unconditional: 1049, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1864, positive: 922, positive conditional: 0, positive unconditional: 922, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 882, unknown conditional: 0, unknown unconditional: 882] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 126]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, C, total; [L100] 0 pthread_t t1, t2, t3, t4; [L102] 0 C = __VERIFIER_nondet_int() [L103] 0 N = __VERIFIER_nondet_int() [L104] 0 n1 = __VERIFIER_nondet_int() [L105] 0 n2 = __VERIFIER_nondet_int() [L106] 0 q1_front = __VERIFIER_nondet_int() [L107] 0 q1_back = q1_front [L108] 0 q2_front = __VERIFIER_nondet_int() [L109] 0 q2_back = q2_front [L38] COND TRUE 0 !cond [L38] COND TRUE 0 !cond [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND FALSE 0 !(i < size) [L139] 0 return arr; [L110] 0 q1 = create_fresh_int_array(n1) [L38] COND TRUE 0 !cond [L38] COND FALSE 0 !(!cond) [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND FALSE 0 !(i < size) [L139] 0 return arr; [L111] 0 q2 = create_fresh_int_array(n2) [L38] COND FALSE 0 !(!cond) [L116] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] COND TRUE 1 i < N [L38] COND TRUE 1 !cond [L51] 1 q1[q1_back] [L38] COND TRUE 1 !cond [L38] COND TRUE 1 !cond [L53] 1 q1_back++ [L54] 1 i++ [L58] 1 return 0; [L117] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L62] COND TRUE 2 j < N [L38] COND TRUE 2 !cond [L65] 2 q2[q2_back] [L38] COND TRUE 2 !cond [L38] COND TRUE 2 !cond [L67] 2 q2_back++ [L68] 2 j++ [L72] 2 return 0; [L118] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L119] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L76] COND TRUE 3 i < N || q1_front < q1_back [L38] COND TRUE 3 !cond [L79] EXPR 3 q1[q1_front] [L38] COND FALSE 3 !(!cond) [L38] COND TRUE 3 !cond [L145] 3 return a + b; [L79] 3 total = plus(total, q1[q1_front]) [L80] 3 q1_front++ [L120] 0 \read(t1) [L120] FCALL, JOIN 1 pthread_join(t1, 0) [L121] 0 \read(t2) [L121] FCALL, JOIN 2 pthread_join(t2, 0) [L122] 0 \read(t3) [L76] COND FALSE 3 !(i < N || q1_front < q1_back) [L84] 3 return 0; [L122] FCALL, JOIN 3 pthread_join(t3, 0) [L123] 0 \read(t4) [L88] COND TRUE 4 j < N || q2_front < q2_back [L38] COND TRUE 4 !cond [L91] EXPR 4 q2[q2_front] [L38] COND TRUE 4 !cond [L38] COND FALSE 4 !(!cond) [L145] 4 return a + b; [L91] 4 total = plus(total, q2[q2_front]) [L92] 4 q2_front++ [L88] COND FALSE 4 !(j < N || q2_front < q2_back) [L96] 4 return 0; [L123] FCALL, JOIN 4 pthread_join(t4, 0) [L38] COND FALSE 0 !(!cond) [L126] 0 reach_error() - UnprovableResult [Line: 119]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 118]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 117]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 200 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 494632.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 43.6ms, AutomataDifference: 3456.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29139.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 380 SDtfs, 1088 SDslu, 1181 SDs, 0 SdLazy, 593 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2303.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 939 GetRequests, 849 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1757.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=682occurred in iteration=5, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 379.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2846 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 352.4ms SsaConstructionTime, 1828.3ms SatisfiabilityAnalysisTime, 8320.2ms InterpolantComputationTime, 480 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 924 ConstructedInterpolants, 10 QuantifiedInterpolants, 5090 SizeOfPredicates, 95 NumberOfNonLiveVariables, 2699 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 36 InterpolantComputations, 12 PerfectInterpolantSequences, 70/98 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...