./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:57:29,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:57:29,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:57:29,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:57:29,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:57:29,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:57:29,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:57:29,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:57:29,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:57:29,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:57:29,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:57:29,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:57:29,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:57:29,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:57:29,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:57:29,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:57:29,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:57:29,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:57:29,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:57:29,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:57:29,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:57:29,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:57:29,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:57:29,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:57:29,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:57:29,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:57:29,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:57:29,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:57:29,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:57:29,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:57:29,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:57:29,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:57:29,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:57:29,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:57:29,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:57:29,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:57:29,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:57:29,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:57:29,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:57:29,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:57:29,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:57:29,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:57:29,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:57:29,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:57:29,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:57:29,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:57:29,529 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:57:29,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:57:29,530 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:57:29,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:57:29,530 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:57:29,530 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:57:29,531 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:57:29,531 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:57:29,531 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:57:29,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:57:29,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:57:29,532 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:57:29,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:57:29,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:57:29,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:57:29,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:57:29,533 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:57:29,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:57:29,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:57:29,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:57:29,534 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:57:29,534 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:57:29,535 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:57:29,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:57:29,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:57:29,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:57:29,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:57:29,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:57:29,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:57:29,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:29,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:57:29,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:57:29,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:57:29,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:57:29,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:57:29,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:57:29,538 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_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2021-11-19 14:57:29,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:57:29,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:57:29,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:57:29,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:57:29,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:57:29,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-11-19 14:57:29,966 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/cd99a6b59/17e3332fa3d1468b9c9d9a52ee47a98b/FLAG030f399b5 [2021-11-19 14:57:30,556 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:57:30,556 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-11-19 14:57:30,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/cd99a6b59/17e3332fa3d1468b9c9d9a52ee47a98b/FLAG030f399b5 [2021-11-19 14:57:30,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/cd99a6b59/17e3332fa3d1468b9c9d9a52ee47a98b [2021-11-19 14:57:30,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:57:30,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:57:30,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:30,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:57:30,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:57:30,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:30" (1/1) ... [2021-11-19 14:57:30,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b8c522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:30, skipping insertion in model container [2021-11-19 14:57:30,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:30" (1/1) ... [2021-11-19 14:57:30,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:57:30,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:57:31,359 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:31,376 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:57:31,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b91aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:31, skipping insertion in model container [2021-11-19 14:57:31,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:31,379 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:57:31,383 INFO L158 Benchmark]: Toolchain (without parser) took 546.09ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 42.9MB in the beginning and 91.4MB in the end (delta: -48.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:57:31,385 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 79.7MB. Free memory was 52.2MB in the beginning and 52.2MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:57:31,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.35ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 42.7MB in the beginning and 91.4MB in the end (delta: -48.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:57:31,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 79.7MB. Free memory was 52.2MB in the beginning and 52.2MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.35ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 42.7MB in the beginning and 91.4MB in the end (delta: -48.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 555]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:57:33,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:57:33,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:57:33,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:57:33,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:57:33,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:57:33,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:57:33,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:57:34,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:57:34,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:57:34,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:57:34,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:57:34,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:57:34,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:57:34,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:57:34,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:57:34,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:57:34,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:57:34,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:57:34,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:57:34,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:57:34,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:57:34,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:57:34,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:57:34,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:57:34,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:57:34,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:57:34,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:57:34,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:57:34,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:57:34,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:57:34,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:57:34,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:57:34,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:57:34,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:57:34,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:57:34,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:57:34,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:57:34,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:57:34,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:57:34,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:57:34,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:57:34,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:57:34,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:57:34,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:57:34,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:57:34,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:57:34,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:57:34,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:57:34,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:57:34,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:57:34,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:57:34,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:57:34,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:57:34,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:57:34,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:57:34,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:57:34,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:57:34,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:57:34,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:57:34,144 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:57:34,144 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:57:34,144 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:57:34,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:57:34,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:57:34,145 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:57:34,145 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:57:34,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:57:34,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:57:34,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:57:34,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:57:34,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:57:34,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:34,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:57:34,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:57:34,148 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:57:34,149 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:34,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:57:34,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:57:34,150 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_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2021-11-19 14:57:34,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:57:34,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:57:34,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:57:34,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:57:34,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:57:34,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-11-19 14:57:34,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/b69a8c98e/1fc31fa3830b458d90f05cf048d68565/FLAG57be74d17 [2021-11-19 14:57:35,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:57:35,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-11-19 14:57:35,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/b69a8c98e/1fc31fa3830b458d90f05cf048d68565/FLAG57be74d17 [2021-11-19 14:57:35,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/data/b69a8c98e/1fc31fa3830b458d90f05cf048d68565 [2021-11-19 14:57:35,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:57:35,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:57:35,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:35,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:57:35,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:57:35,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:35" (1/1) ... [2021-11-19 14:57:35,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c44234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:35, skipping insertion in model container [2021-11-19 14:57:35,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:35" (1/1) ... [2021-11-19 14:57:35,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:57:35,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:57:36,066 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:36,097 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:57:36,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:57:36,177 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:36,183 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:57:36,220 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:36,274 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:57:36,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36 WrapperNode [2021-11-19 14:57:36,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:36,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:57:36,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:57:36,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:57:36,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,373 INFO L137 Inliner]: procedures = 129, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2021-11-19 14:57:36,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:57:36,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:57:36,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:57:36,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:57:36,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:57:36,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:57:36,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:57:36,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:57:36,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (1/1) ... [2021-11-19 14:57:36,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:57:36,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:57:36,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:57:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:57:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:57:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:57:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:57:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:57:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:57:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:57:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:57:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:57:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:57:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:57:36,766 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:57:36,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:57:37,571 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:57:37,581 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:57:37,581 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 14:57:37,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:37 BoogieIcfgContainer [2021-11-19 14:57:37,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:57:37,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:57:37,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:57:37,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:57:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:57:35" (1/3) ... [2021-11-19 14:57:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f80df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:57:37, skipping insertion in model container [2021-11-19 14:57:37,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:36" (2/3) ... [2021-11-19 14:57:37,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f80df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:57:37, skipping insertion in model container [2021-11-19 14:57:37,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:37" (3/3) ... [2021-11-19 14:57:37,633 INFO L111 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-1.i [2021-11-19 14:57:37,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:57:37,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-19 14:57:37,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:57:37,758 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:57:37,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-19 14:57:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:57:37,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:37,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:57:37,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-11-19 14:57:37,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:37,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578242509] [2021-11-19 14:57:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:37,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:37,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:37,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:57:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:37,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:57:37,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:38,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:38,197 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:57:38,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-19 14:57:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:38,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:38,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:38,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578242509] [2021-11-19 14:57:38,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578242509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:38,358 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:38,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:57:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018627541] [2021-11-19 14:57:38,366 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:38,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:38,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:57:38,426 INFO L87 Difference]: Start difference. First operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 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 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:38,855 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-11-19 14:57:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:57:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 4 [2021-11-19 14:57:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:38,869 INFO L225 Difference]: With dead ends: 158 [2021-11-19 14:57:38,869 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 14:57:38,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:57:38,875 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 199 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:38,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 110 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2021-11-19 14:57:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 14:57:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 98. [2021-11-19 14:57:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 97 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-11-19 14:57:38,936 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 4 [2021-11-19 14:57:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:38,936 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-11-19 14:57:38,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-11-19 14:57:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:57:38,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:38,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:57:38,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:39,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:39,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-11-19 14:57:39,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:39,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953692944] [2021-11-19 14:57:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:39,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:39,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:39,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:39,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:57:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:39,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:57:39,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:39,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:39,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:39,437 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:57:39,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-19 14:57:39,449 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:57:39,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-19 14:57:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:39,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:39,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:39,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953692944] [2021-11-19 14:57:39,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953692944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:39,943 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:39,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:57:39,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561923447] [2021-11-19 14:57:39,945 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:39,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:57:39,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:39,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:57:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:57:39,960 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:40,617 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2021-11-19 14:57:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 4 [2021-11-19 14:57:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:40,620 INFO L225 Difference]: With dead ends: 100 [2021-11-19 14:57:40,620 INFO L226 Difference]: Without dead ends: 100 [2021-11-19 14:57:40,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:57:40,622 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:40,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 204 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 81 Unchecked, 0.6s Time] [2021-11-19 14:57:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-19 14:57:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-19 14:57:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 58 states have (on average 1.896551724137931) internal successors, (110), 99 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2021-11-19 14:57:40,641 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 4 [2021-11-19 14:57:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:40,642 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2021-11-19 14:57:40,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2021-11-19 14:57:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:57:40,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:40,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:57:40,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:57:40,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:40,869 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-11-19 14:57:40,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:40,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841686143] [2021-11-19 14:57:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:40,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:40,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:40,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:57:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:40,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:57:40,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:40,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:40,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:40,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:40,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841686143] [2021-11-19 14:57:40,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841686143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:40,972 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:40,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:57:40,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365748829] [2021-11-19 14:57:40,972 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:40,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:57:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:57:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:57:40,974 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:41,200 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-11-19 14:57:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:57:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-19 14:57:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:41,203 INFO L225 Difference]: With dead ends: 143 [2021-11-19 14:57:41,203 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 14:57:41,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:57:41,205 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 81 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:41,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 88 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:57:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 14:57:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2021-11-19 14:57:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.8448275862068966) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2021-11-19 14:57:41,216 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 5 [2021-11-19 14:57:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:41,217 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2021-11-19 14:57:41,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2021-11-19 14:57:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:57:41,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:41,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:57:41,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:41,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:41,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-11-19 14:57:41,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:41,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773103374] [2021-11-19 14:57:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:41,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:41,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:41,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:41,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:57:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:41,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:57:41,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:41,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:41,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:41,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:41,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773103374] [2021-11-19 14:57:41,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773103374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:41,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:41,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:57:41,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549158008] [2021-11-19 14:57:41,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:41,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:57:41,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:57:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:57:41,605 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:42,063 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2021-11-19 14:57:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:57:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-11-19 14:57:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:42,066 INFO L225 Difference]: With dead ends: 163 [2021-11-19 14:57:42,066 INFO L226 Difference]: Without dead ends: 163 [2021-11-19 14:57:42,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:57:42,068 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 155 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:42,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 109 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:57:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-19 14:57:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 101. [2021-11-19 14:57:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 100 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) [2021-11-19 14:57:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-11-19 14:57:42,078 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 5 [2021-11-19 14:57:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:42,079 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-11-19 14:57:42,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-11-19 14:57:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:57:42,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:42,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:42,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:42,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:42,291 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2021-11-19 14:57:42,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:42,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046582556] [2021-11-19 14:57:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:42,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:42,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:42,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:57:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:42,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:57:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:42,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:42,402 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:57:42,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-19 14:57:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:42,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:42,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:42,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046582556] [2021-11-19 14:57:42,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046582556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:42,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:42,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:57:42,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876000886] [2021-11-19 14:57:42,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:42,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:57:42,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:57:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:57:42,456 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:42,716 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2021-11-19 14:57:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:57:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-11-19 14:57:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:42,718 INFO L225 Difference]: With dead ends: 150 [2021-11-19 14:57:42,718 INFO L226 Difference]: Without dead ends: 150 [2021-11-19 14:57:42,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:57:42,719 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 75 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:42,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 153 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:57:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-19 14:57:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2021-11-19 14:57:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-11-19 14:57:42,729 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 9 [2021-11-19 14:57:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:42,729 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-11-19 14:57:42,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-11-19 14:57:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:57:42,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:42,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:42,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:42,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:42,946 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:42,947 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2021-11-19 14:57:42,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:42,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622684719] [2021-11-19 14:57:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:42,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:42,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:42,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:42,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:57:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:43,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:57:43,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:43,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:43,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:43,146 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:57:43,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-19 14:57:43,156 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:57:43,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:57:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:43,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:45,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:45,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622684719] [2021-11-19 14:57:45,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622684719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:45,411 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:45,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:57:45,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346285368] [2021-11-19 14:57:45,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:45,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:57:45,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:57:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:57:45,413 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:45,974 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2021-11-19 14:57:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 9 [2021-11-19 14:57:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:45,977 INFO L225 Difference]: With dead ends: 163 [2021-11-19 14:57:45,977 INFO L226 Difference]: Without dead ends: 163 [2021-11-19 14:57:45,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:57:45,978 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 77 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:45,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 275 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 119 Unchecked, 0.5s Time] [2021-11-19 14:57:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-19 14:57:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 97. [2021-11-19 14:57:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.671875) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-11-19 14:57:45,985 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 9 [2021-11-19 14:57:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:45,985 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-11-19 14:57:45,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-11-19 14:57:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:57:45,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:45,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:46,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 14:57:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:46,206 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1328494166, now seen corresponding path program 1 times [2021-11-19 14:57:46,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:46,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136494419] [2021-11-19 14:57:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:46,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:46,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:46,207 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:46,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:57:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:46,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:57:46,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:46,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:46,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:46,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:46,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136494419] [2021-11-19 14:57:46,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136494419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:46,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:46,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:57:46,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230233864] [2021-11-19 14:57:46,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:46,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:57:46,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:57:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:57:46,448 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:47,210 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2021-11-19 14:57:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:57:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 10 [2021-11-19 14:57:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:47,213 INFO L225 Difference]: With dead ends: 217 [2021-11-19 14:57:47,213 INFO L226 Difference]: Without dead ends: 217 [2021-11-19 14:57:47,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:57:47,214 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 143 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:47,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 248 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:57:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-19 14:57:47,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 96. [2021-11-19 14:57:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.640625) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2021-11-19 14:57:47,221 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 10 [2021-11-19 14:57:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:47,221 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2021-11-19 14:57:47,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2021-11-19 14:57:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:57:47,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:47,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:47,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:47,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:47,438 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1764814573, now seen corresponding path program 1 times [2021-11-19 14:57:47,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:47,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303899635] [2021-11-19 14:57:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:47,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:47,441 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:47,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:57:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:47,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:57:47,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:47,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:47,812 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 8 treesize of output 6 [2021-11-19 14:57:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:47,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:47,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303899635] [2021-11-19 14:57:47,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303899635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:47,909 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:47,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:57:47,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148618650] [2021-11-19 14:57:47,910 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:47,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:57:47,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:47,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:57:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:57:47,911 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:48,142 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-11-19 14:57:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:57:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 11 [2021-11-19 14:57:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:48,144 INFO L225 Difference]: With dead ends: 95 [2021-11-19 14:57:48,144 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 14:57:48,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:57:48,145 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 326 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:48,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 56 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:57:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 14:57:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-19 14:57:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.609375) internal successors, (103), 94 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2021-11-19 14:57:48,151 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 11 [2021-11-19 14:57:48,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:48,151 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2021-11-19 14:57:48,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2021-11-19 14:57:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 14:57:48,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:48,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:48,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:48,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:48,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1102419536, now seen corresponding path program 1 times [2021-11-19 14:57:48,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:48,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162889180] [2021-11-19 14:57:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:48,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:48,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:48,371 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:48,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:57:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:48,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:57:48,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:48,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:48,620 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 8 treesize of output 6 [2021-11-19 14:57:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:48,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:48,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162889180] [2021-11-19 14:57:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162889180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:48,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:48,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:57:48,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125033900] [2021-11-19 14:57:48,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:48,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:57:48,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:57:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:57:48,662 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:48,831 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2021-11-19 14:57:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:57:48,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 14:57:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:48,833 INFO L225 Difference]: With dead ends: 154 [2021-11-19 14:57:48,834 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 14:57:48,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:57:48,835 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 155 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:48,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 252 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:57:48,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 14:57:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2021-11-19 14:57:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.596774193548387) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-11-19 14:57:48,840 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 12 [2021-11-19 14:57:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:48,841 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-11-19 14:57:48,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-11-19 14:57:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:57:48,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:48,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:48,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 14:57:49,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:49,051 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2021-11-19 14:57:49,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:49,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107465066] [2021-11-19 14:57:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:49,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:49,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:49,052 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:49,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:57:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:57:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:49,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:49,156 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 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 14:57:49,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 12 [2021-11-19 14:57:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:49,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:49,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:49,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107465066] [2021-11-19 14:57:49,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107465066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:49,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:49,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:57:49,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250586094] [2021-11-19 14:57:49,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:49,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:49,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:57:49,284 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:49,783 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-11-19 14:57:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:57:49,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 14:57:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:49,786 INFO L225 Difference]: With dead ends: 101 [2021-11-19 14:57:49,786 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:57:49,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:57:49,787 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:49,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 217 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:57:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:57:49,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2021-11-19 14:57:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.6) internal successors, (104), 94 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-11-19 14:57:49,792 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 13 [2021-11-19 14:57:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:49,792 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-11-19 14:57:49,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-11-19 14:57:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:57:49,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:49,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:49,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:49,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:49,994 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2021-11-19 14:57:49,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:49,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663891606] [2021-11-19 14:57:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:49,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:49,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:50,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:57:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:50,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:57:50,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:50,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:50,138 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 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 14:57:50,151 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:57:50,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 27 [2021-11-19 14:57:50,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 12 [2021-11-19 14:57:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:50,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:50,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663891606] [2021-11-19 14:57:50,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663891606] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:50,898 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:50,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:50,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089240654] [2021-11-19 14:57:50,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:50,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:57:50,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:50,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:57:50,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:57:50,899 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:52,484 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-11-19 14:57:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:57:52,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 14:57:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:52,486 INFO L225 Difference]: With dead ends: 96 [2021-11-19 14:57:52,486 INFO L226 Difference]: Without dead ends: 96 [2021-11-19 14:57:52,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:57:52,487 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 5 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:52,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 407 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:57:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-19 14:57:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-11-19 14:57:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 94 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-11-19 14:57:52,492 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 13 [2021-11-19 14:57:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:52,492 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-11-19 14:57:52,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-11-19 14:57:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:57:52,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:52,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:52,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:52,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:52,703 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 896280002, now seen corresponding path program 1 times [2021-11-19 14:57:52,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:52,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12941618] [2021-11-19 14:57:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:52,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:52,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:52,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:52,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:57:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:52,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:57:52,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:52,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:53,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:57:53,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2021-11-19 14:57:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:53,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:53,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12941618] [2021-11-19 14:57:53,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12941618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:53,306 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:53,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:57:53,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674029631] [2021-11-19 14:57:53,306 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:53,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:57:53,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:57:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:57:53,308 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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) [2021-11-19 14:57:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:53,510 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2021-11-19 14:57:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:57:53,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 14 [2021-11-19 14:57:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:53,511 INFO L225 Difference]: With dead ends: 89 [2021-11-19 14:57:53,511 INFO L226 Difference]: Without dead ends: 89 [2021-11-19 14:57:53,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:53,512 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 355 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:53,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 51 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:57:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-19 14:57:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-11-19 14:57:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-11-19 14:57:53,516 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 14 [2021-11-19 14:57:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-11-19 14:57:53,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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) [2021-11-19 14:57:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-11-19 14:57:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:57:53,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:53,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:53,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:53,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:53,718 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1897191058, now seen corresponding path program 1 times [2021-11-19 14:57:53,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:53,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961193622] [2021-11-19 14:57:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:53,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:53,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:53,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:53,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:57:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:57:53,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:53,881 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:57:53,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-19 14:57:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:54,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:58,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961193622] [2021-11-19 14:57:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961193622] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:58,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:58,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:57:58,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045009297] [2021-11-19 14:57:58,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:58,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=0, Total=20 [2021-11-19 14:57:58,253 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 5 states, 4 states have (on average 6.75) 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) [2021-11-19 14:57:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:58,276 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2021-11-19 14:57:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:58,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) 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 15 [2021-11-19 14:57:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:58,279 INFO L225 Difference]: With dead ends: 93 [2021-11-19 14:57:58,279 INFO L226 Difference]: Without dead ends: 93 [2021-11-19 14:57:58,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=0, Total=20 [2021-11-19 14:57:58,280 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:58,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2021-11-19 14:57:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-19 14:57:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-11-19 14:57:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-11-19 14:57:58,283 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 15 [2021-11-19 14:57:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:58,284 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-11-19 14:57:58,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) 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) [2021-11-19 14:57:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-11-19 14:57:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:57:58,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:58,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:58,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:58,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:58,507 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -734113802, now seen corresponding path program 1 times [2021-11-19 14:57:58,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:58,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788679177] [2021-11-19 14:57:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:58,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:58,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:58,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:58,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:57:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:58,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:57:58,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:58,741 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 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 14:57:58,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 8 [2021-11-19 14:57:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:58,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:58,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 26 [2021-11-19 14:57:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:58,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:58,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788679177] [2021-11-19 14:57:58,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788679177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:58,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:58,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:57:58,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344631344] [2021-11-19 14:57:58,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:58,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:58,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:57:58,965 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:59,233 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2021-11-19 14:57:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 14:57:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:59,234 INFO L225 Difference]: With dead ends: 133 [2021-11-19 14:57:59,234 INFO L226 Difference]: Without dead ends: 133 [2021-11-19 14:57:59,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:57:59,236 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 156 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:59,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 174 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:57:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-19 14:57:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2021-11-19 14:57:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-11-19 14:57:59,240 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 17 [2021-11-19 14:57:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:59,240 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-11-19 14:57:59,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-11-19 14:57:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:57:59,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:59,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:59,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 14:57:59,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:59,453 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:57:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -734113798, now seen corresponding path program 1 times [2021-11-19 14:57:59,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:59,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229385479] [2021-11-19 14:57:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:59,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:59,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:59,455 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:59,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:57:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:59,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:57:59,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:59,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:57:59,683 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 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-19 14:57:59,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 13 [2021-11-19 14:57:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:59,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:59,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 36 [2021-11-19 14:58:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:00,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:00,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229385479] [2021-11-19 14:58:00,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229385479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:00,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:00,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:58:00,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569418571] [2021-11-19 14:58:00,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:00,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:58:00,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:58:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:58:00,087 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:00,549 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2021-11-19 14:58:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:58:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 14:58:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:00,551 INFO L225 Difference]: With dead ends: 127 [2021-11-19 14:58:00,551 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 14:58:00,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:58:00,553 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 98 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:00,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 173 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2021-11-19 14:58:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 14:58:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2021-11-19 14:58:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.476923076923077) internal successors, (96), 88 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) [2021-11-19 14:58:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2021-11-19 14:58:00,557 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 17 [2021-11-19 14:58:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:00,558 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2021-11-19 14:58:00,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2021-11-19 14:58:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:58:00,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:00,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:00,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:00,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:00,771 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:58:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash -734113797, now seen corresponding path program 1 times [2021-11-19 14:58:00,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:00,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825023764] [2021-11-19 14:58:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:00,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:00,774 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:00,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:58:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:00,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:58:00,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:00,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:58:01,104 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 14:58:01,112 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 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-19 14:58:01,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 23 [2021-11-19 14:58:01,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 12 [2021-11-19 14:58:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:01,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:01,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 32 [2021-11-19 14:58:01,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:58:01,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:58:01,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:58:01,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:58:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:01,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:01,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825023764] [2021-11-19 14:58:01,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825023764] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:01,843 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:01,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:58:01,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944891563] [2021-11-19 14:58:01,843 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:01,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:58:01,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:58:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:58:01,844 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:03,311 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2021-11-19 14:58:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:58:03,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 14:58:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:03,314 INFO L225 Difference]: With dead ends: 223 [2021-11-19 14:58:03,314 INFO L226 Difference]: Without dead ends: 223 [2021-11-19 14:58:03,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:58:03,316 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 329 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:03,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 261 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:58:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-19 14:58:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 89. [2021-11-19 14:58:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 88 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-11-19 14:58:03,321 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 17 [2021-11-19 14:58:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:03,321 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-11-19 14:58:03,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2021-11-19 14:58:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:58:03,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:03,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:03,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:03,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:03,531 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:58:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2021-11-19 14:58:03,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:03,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735073622] [2021-11-19 14:58:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:03,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:03,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:03,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:03,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:58:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:03,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:58:03,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:03,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:58:03,695 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:58:03,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-19 14:58:03,762 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 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 14:58:04,109 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-19 14:58:04,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 48 [2021-11-19 14:58:04,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 51 treesize of output 33 [2021-11-19 14:58:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:58:04,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:04,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:58:04,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-11-19 14:58:06,462 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_create_data_~counter~0#1| (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (let ((.cse0 (bvmul |ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse0) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse0 (_ bv1 32)) v_DerPreprocessor_2) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse0) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse0) v_DerPreprocessor_4))) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))))))) (_ bv1 1)))) is different from false [2021-11-19 14:58:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-19 14:58:16,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:16,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735073622] [2021-11-19 14:58:16,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735073622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:58:16,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1610816055] [2021-11-19 14:58:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:16,803 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:58:16,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:58:16,823 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:58:16,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:58:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:16,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:58:16,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:16,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:58:17,041 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:58:17,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 14:58:17,087 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 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 14:58:17,415 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-19 14:58:17,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 46 [2021-11-19 14:58:17,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 51 treesize of output 33 [2021-11-19 14:58:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:58:17,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:17,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:58:17,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-11-19 14:58:19,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_create_data_~counter~0#1| (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (let ((.cse0 (bvmul |ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse0) v_DerPreprocessor_5) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse0 (_ bv1 32)) v_DerPreprocessor_6) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse0) v_DerPreprocessor_7) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse0) v_DerPreprocessor_8))) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:58:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-19 14:58:24,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1610816055] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:58:24,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781804155] [2021-11-19 14:58:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:24,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:58:24,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:58:24,458 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:58:24,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 14:58:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:24,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:58:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:24,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:58:24,590 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:58:24,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 14:58:24,637 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 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 14:58:24,947 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-19 14:58:24,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 48 [2021-11-19 14:58:25,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 51 treesize of output 33 [2021-11-19 14:58:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:58:25,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:25,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:58:25,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-11-19 14:58:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:35,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781804155] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:58:35,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:58:35,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 7, 6, 7] total 15 [2021-11-19 14:58:35,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333439882] [2021-11-19 14:58:35,961 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:58:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:58:35,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:58:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=132, Unknown=6, NotChecked=50, Total=240 [2021-11-19 14:58:35,962 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 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) [2021-11-19 14:58:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:36,832 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2021-11-19 14:58:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:58:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 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 18 [2021-11-19 14:58:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:36,833 INFO L225 Difference]: With dead ends: 136 [2021-11-19 14:58:36,833 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 14:58:36,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=65, Invalid=147, Unknown=6, NotChecked=54, Total=272 [2021-11-19 14:58:36,834 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 61 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:36,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 418 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 320 Unchecked, 0.4s Time] [2021-11-19 14:58:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 14:58:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 88. [2021-11-19 14:58:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 87 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-11-19 14:58:36,839 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 18 [2021-11-19 14:58:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:36,839 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-11-19 14:58:36,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 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) [2021-11-19 14:58:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-11-19 14:58:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:58:36,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:36,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:36,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:37,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 14:58:37,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 14:58:37,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:37,455 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-19 14:58:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 50233869, now seen corresponding path program 1 times [2021-11-19 14:58:37,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:37,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637003277] [2021-11-19 14:58:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:37,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:37,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:37,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:58:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:37,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:58:37,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:37,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:58:37,592 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:58:37,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-19 14:58:37,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:58:37,638 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:58:37,652 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 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:58:37,991 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-19 14:58:37,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 251 treesize of output 126 [2021-11-19 14:58:38,054 INFO L354 Elim1Store]: treesize reduction 714, result has 1.2 percent of original size [2021-11-19 14:58:38,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 34 [2021-11-19 14:58:38,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 31 [2021-11-19 14:58:38,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 16 [2021-11-19 14:58:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:38,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:38,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:58:38,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-19 14:58:38,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:58:38,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 455 [2021-11-19 14:58:56,983 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse3 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse0) v_DerPreprocessor_13) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse0 (_ bv1 32)) v_DerPreprocessor_14) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse0) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse0) v_DerPreprocessor_16))) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse4 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32))) (.cse10 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse10)) (.cse6 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse4)) (.cse7 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse4 (_ bv1 32))) (.cse8 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse4)) (.cse9 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse4))) (bvule (bvadd (_ bv8 32) .cse4 (select (select (store |c_#memory_$Pointer$.offset| .cse5 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse5) .cse6 v_DerPreprocessor_13) .cse7 v_DerPreprocessor_14) .cse8 v_DerPreprocessor_15) .cse9 v_DerPreprocessor_16)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse10)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse5 (store (store (store (store (select |c_#memory_$Pointer$.base| .cse5) .cse6 v_DerPreprocessor_17) .cse7 v_DerPreprocessor_18) .cse8 v_DerPreprocessor_19) .cse9 v_DerPreprocessor_20)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse10))))))) is different from false [2021-11-19 14:58:59,283 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse4 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (.cse1 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv1 32))) (.cse2 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32))) (.cse3 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))))) (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse5 (let ((.cse7 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (store |c_#memory_$Pointer$.offset| .cse6 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse6) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32)) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32)) v_DerPreprocessor_16))) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7)))) (bvule (bvadd (_ bv4 32) .cse5) (bvadd (_ bv8 32) .cse5))))) is different from false [2021-11-19 14:59:09,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:59:09,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:59:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 14:59:09,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:09,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637003277] [2021-11-19 14:59:09,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637003277] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:59:09,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [154359892] [2021-11-19 14:59:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:09,637 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:59:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:59:09,639 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:59:09,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 14:59:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:09,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:59:09,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:09,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:59:09,843 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:59:09,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-19 14:59:09,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:59:09,878 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 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:59:09,895 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:59:10,145 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-19 14:59:10,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 251 treesize of output 126 [2021-11-19 14:59:10,239 INFO L354 Elim1Store]: treesize reduction 714, result has 1.2 percent of original size [2021-11-19 14:59:10,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 34 [2021-11-19 14:59:10,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 31 [2021-11-19 14:59:10,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 16 [2021-11-19 14:59:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:59:10,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:10,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:59:10,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-19 14:59:10,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:59:10,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 455 [2021-11-19 14:59:13,536 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32))) (let ((.cse1 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse1) v_DerPreprocessor_21) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse1 (_ bv1 32)) v_DerPreprocessor_22) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse1) v_DerPreprocessor_23) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse1) v_DerPreprocessor_24)) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32))))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1))))) (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (let ((.cse7 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse2 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse7)) (.cse3 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse7 (_ bv1 32))) (.cse4 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse7)) (.cse5 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse7)) (.cse6 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) .cse2 v_DerPreprocessor_21) .cse3 v_DerPreprocessor_22) .cse4 v_DerPreprocessor_23) .cse5 v_DerPreprocessor_24)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse6) .cse7) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) .cse2 v_DerPreprocessor_25) .cse3 v_DerPreprocessor_26) .cse4 v_DerPreprocessor_27) .cse5 v_DerPreprocessor_28)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse6))))))) is different from false [2021-11-19 14:59:33,665 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:59:35,811 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse1) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_21) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv1 32)) v_DerPreprocessor_22) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32)) v_DerPreprocessor_23) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32)) v_DerPreprocessor_24))) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (let ((.cse7 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7)) (.cse4 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv1 32))) (.cse5 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32))) (.cse6 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_21) .cse4 v_DerPreprocessor_22) .cse5 v_DerPreprocessor_23) .cse6 v_DerPreprocessor_24)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (store (store (store (select |c_#memory_$Pointer$.base| .cse3) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_25) .cse4 v_DerPreprocessor_26) .cse5 v_DerPreprocessor_27) .cse6 v_DerPreprocessor_28)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))))))) is different from false [2021-11-19 14:59:41,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:59:41,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:59:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-19 14:59:41,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [154359892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:59:41,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066560358] [2021-11-19 14:59:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:41,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:59:41,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:59:41,839 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:59:41,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0caab67f-ba95-470c-9703-863b8b9739b4/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 14:59:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:41,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:59:41,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:41,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:59:41,959 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:59:41,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-19 14:59:41,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:59:41,984 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:59:41,994 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 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:59:42,267 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-19 14:59:42,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 251 treesize of output 126 [2021-11-19 14:59:42,364 INFO L354 Elim1Store]: treesize reduction 714, result has 1.2 percent of original size [2021-11-19 14:59:42,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 34 [2021-11-19 14:59:42,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 31 [2021-11-19 14:59:42,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 16 [2021-11-19 14:59:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:59:42,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:42,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:59:42,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-19 14:59:42,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:59:42,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 455 [2021-11-19 14:59:45,504 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (let ((.cse1 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse1) v_DerPreprocessor_29) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse1 (_ bv1 32)) v_DerPreprocessor_30) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse1) v_DerPreprocessor_31) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse1) v_DerPreprocessor_32)) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32))))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1))))) (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (let ((.cse7 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse2 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse7)) (.cse3 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse7 (_ bv1 32))) (.cse4 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse7)) (.cse5 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse7)) (.cse6 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) .cse2 v_DerPreprocessor_29) .cse3 v_DerPreprocessor_30) .cse4 v_DerPreprocessor_31) .cse5 v_DerPreprocessor_32)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse6) .cse7) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) .cse2 v_DerPreprocessor_33) .cse3 v_DerPreprocessor_34) .cse4 v_DerPreprocessor_35) .cse5 v_DerPreprocessor_36)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse6))))))) is different from false [2021-11-19 15:00:11,957 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)