./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH --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 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:37:35,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:35,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:35,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:35,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:35,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:35,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:35,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:35,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:35,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:35,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:35,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:35,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:35,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:35,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:35,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:35,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:35,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:35,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:35,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:35,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:35,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:35,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:35,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:35,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:35,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:35,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:35,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:35,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:35,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:35,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:35,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:35,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:35,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:35,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:35,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:35,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:35,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:35,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:35,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:35,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:35,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:37:35,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:35,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:35,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:35,650 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:35,651 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:35,651 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:35,651 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:37:35,652 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:35,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:35,652 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:37:35,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:37:35,653 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:35,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:37:35,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:37:35,655 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:37:35,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:37:35,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:37:35,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:35,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:37:35,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:37:35,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:35,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:37:35,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:35,667 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:37:35,667 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:37:35,668 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:37:35,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:35,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:35,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:37:35,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:35,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:35,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:35,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:35,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:35,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:35,673 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:37:35,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:37:35,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:35,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:35,675 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_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 [2021-11-03 04:37:35,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:35,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:35,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:35,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:35,957 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:35,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-03 04:37:36,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/611e00261/38ebab5164614d94855db8c8b9bea3ad/FLAG33a6dd8cc [2021-11-03 04:37:36,586 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:36,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-03 04:37:36,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/611e00261/38ebab5164614d94855db8c8b9bea3ad/FLAG33a6dd8cc [2021-11-03 04:37:36,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/611e00261/38ebab5164614d94855db8c8b9bea3ad [2021-11-03 04:37:36,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:36,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:36,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:36,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:36,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:36,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:36" (1/1) ... [2021-11-03 04:37:36,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac06726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:36, skipping insertion in model container [2021-11-03 04:37:36,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:36" (1/1) ... [2021-11-03 04:37:36,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:36,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:37,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:37,382 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) [2021-11-03 04:37:37,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c1a1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:37, skipping insertion in model container [2021-11-03 04:37:37,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:37,384 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:37:37,387 INFO L168 Benchmark]: Toolchain (without parser) took 498.59 ms. Allocated memory is still 121.6 MB. Free memory was 82.2 MB in the beginning and 93.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:37,388 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory was 100.5 MB in the beginning and 100.4 MB in the end (delta: 90.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:37,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.06 ms. Allocated memory is still 121.6 MB. Free memory was 81.9 MB in the beginning and 93.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:37,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory was 100.5 MB in the beginning and 100.4 MB in the end (delta: 90.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 496.06 ms. Allocated memory is still 121.6 MB. Free memory was 81.9 MB in the beginning and 93.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH --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 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:37:39,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:39,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:39,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:39,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:39,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:39,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:39,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:39,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:39,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:39,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:39,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:39,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:39,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:39,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:39,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:39,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:39,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:39,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:39,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:39,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:39,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:39,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:39,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:39,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:39,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:39,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:39,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:39,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:39,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:39,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:39,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:39,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:39,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:39,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:39,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:39,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:39,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:39,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:39,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:39,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:39,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:37:39,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:39,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:39,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:39,743 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:39,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:39,743 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:39,743 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:39,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:39,744 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:39,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:37:39,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:37:39,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:39,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:37:39,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:37:39,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:39,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:37:39,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:39,746 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:37:39,746 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:37:39,746 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:37:39,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:39,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:39,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:37:39,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:37:39,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:37:39,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:39,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:39,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:37:39,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:39,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:39,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:39,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:39,749 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:37:39,749 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:37:39,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:39,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:39,750 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_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 [2021-11-03 04:37:40,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:40,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:40,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:40,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:40,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:40,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-03 04:37:40,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/8e319219b/846688e75221487588767aea5c95d730/FLAGf0d23bd97 [2021-11-03 04:37:40,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:40,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-03 04:37:40,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/8e319219b/846688e75221487588767aea5c95d730/FLAGf0d23bd97 [2021-11-03 04:37:41,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/data/8e319219b/846688e75221487588767aea5c95d730 [2021-11-03 04:37:41,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:41,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:41,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:41,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:41,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:41,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c53eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41, skipping insertion in model container [2021-11-03 04:37:41,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:41,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:41,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:41,681 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:37:41,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:41,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:41,733 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:37:41,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:41,821 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:37:41,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41 WrapperNode [2021-11-03 04:37:41,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:41,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:41,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:37:41,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:37:41,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:41,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:37:41,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:37:41,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:37:41,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:37:41,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:37:41,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:37:41,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:37:41,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (1/1) ... [2021-11-03 04:37:41,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:42,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:42,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:37:42,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:37:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:37:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:37:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:37:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:37:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:37:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:37:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:37:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:37:42,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:37:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:37:42,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:37:42,791 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 04:37:42,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:37:42 BoogieIcfgContainer [2021-11-03 04:37:42,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:37:42,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:37:42,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:37:42,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:37:42,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:37:41" (1/3) ... [2021-11-03 04:37:42,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163909c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:37:42, skipping insertion in model container [2021-11-03 04:37:42,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:41" (2/3) ... [2021-11-03 04:37:42,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163909c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:37:42, skipping insertion in model container [2021-11-03 04:37:42,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:37:42" (3/3) ... [2021-11-03 04:37:42,818 INFO L111 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-2.i [2021-11-03 04:37:42,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:37:42,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-03 04:37:42,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:37:42,892 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 [2021-11-03 04:37:42,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-03 04:37:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 50 states have (on average 2.12) 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) [2021-11-03 04:37:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:37:42,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:42,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:37:42,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:37:42,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:42,919 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-11-03 04:37:42,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:37:42,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503889642] [2021-11-03 04:37:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:42,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:37:42,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:37:42,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:37:42,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:37:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:43,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:37:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:43,089 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 [2021-11-03 04:37:43,140 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:37:43,140 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 16 treesize of output 21 [2021-11-03 04:37:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:43,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:43,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:37:43,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503889642] [2021-11-03 04:37:43,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503889642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:37:43,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:37:43,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:37:43,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329805113] [2021-11-03 04:37:43,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:37:43,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:37:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:37:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:37:43,277 INFO L87 Difference]: Start difference. First operand has 97 states, 50 states have (on average 2.12) 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) 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) [2021-11-03 04:37:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:37:43,686 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2021-11-03 04:37:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:37:43,688 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 [2021-11-03 04:37:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:37:43,699 INFO L225 Difference]: With dead ends: 147 [2021-11-03 04:37:43,700 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 04:37:43,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:37:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 04:37:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-11-03 04:37:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 51 states have (on average 1.9411764705882353) 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) [2021-11-03 04:37:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-11-03 04:37:43,736 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 4 [2021-11-03 04:37:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:37:43,736 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-11-03 04:37:43,736 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) [2021-11-03 04:37:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-11-03 04:37:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:37:43,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:43,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:37:43,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:37:43,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:37:43,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:37:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-11-03 04:37:43,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:37:43,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381662381] [2021-11-03 04:37:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:43,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:37:43,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:37:43,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:37:43,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:37:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:44,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:37:44,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:44,054 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 [2021-11-03 04:37:44,061 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 [2021-11-03 04:37:44,168 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:37:44,169 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 29 treesize of output 31 [2021-11-03 04:37:44,181 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:37:44,182 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 28 treesize of output 24 [2021-11-03 04:37:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:44,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:44,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:37:44,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381662381] [2021-11-03 04:37:44,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381662381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:37:44,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:37:44,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:37:44,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220808820] [2021-11-03 04:37:44,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:37:44,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:37:44,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:37:44,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:37:44,472 INFO L87 Difference]: Start difference. First operand 92 states and 99 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) [2021-11-03 04:38:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:10,705 INFO L93 Difference]: Finished difference Result 264 states and 288 transitions. [2021-11-03 04:38:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:38:10,716 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 [2021-11-03 04:38:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:10,720 INFO L225 Difference]: With dead ends: 264 [2021-11-03 04:38:10,720 INFO L226 Difference]: Without dead ends: 264 [2021-11-03 04:38:10,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:38:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-03 04:38:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 108. [2021-11-03 04:38:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 68 states have (on average 1.838235294117647) internal successors, (125), 107 states have internal predecessors, (125), 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) [2021-11-03 04:38:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2021-11-03 04:38:10,733 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 4 [2021-11-03 04:38:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:10,734 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2021-11-03 04:38:10,734 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) [2021-11-03 04:38:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2021-11-03 04:38:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:38:10,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:10,735 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:38:10,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:38:10,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:10,945 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-11-03 04:38:10,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:10,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830394011] [2021-11-03 04:38:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:10,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:10,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:10,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:38:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:11,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:38:11,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:11,100 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 [2021-11-03 04:38:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:11,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:11,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:11,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830394011] [2021-11-03 04:38:11,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830394011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:11,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:11,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:38:11,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585806384] [2021-11-03 04:38:11,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:38:11,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:38:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:11,139 INFO L87 Difference]: Start difference. First operand 108 states and 125 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) [2021-11-03 04:38:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:11,416 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2021-11-03 04:38:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:11,417 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 [2021-11-03 04:38:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:11,418 INFO L225 Difference]: With dead ends: 137 [2021-11-03 04:38:11,418 INFO L226 Difference]: Without dead ends: 137 [2021-11-03 04:38:11,418 INFO L786 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 [2021-11-03 04:38:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-03 04:38:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 106. [2021-11-03 04:38:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.7941176470588236) internal successors, (122), 105 states have internal predecessors, (122), 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) [2021-11-03 04:38:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-11-03 04:38:11,426 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 5 [2021-11-03 04:38:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:11,426 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-11-03 04:38:11,427 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) [2021-11-03 04:38:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-11-03 04:38:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:38:11,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:11,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:38:11,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:11,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:11,638 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-11-03 04:38:11,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:11,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949689713] [2021-11-03 04:38:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:11,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:11,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:11,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:11,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:38:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:11,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:11,733 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 [2021-11-03 04:38:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:11,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:11,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:11,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949689713] [2021-11-03 04:38:11,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949689713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:11,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:11,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:38:11,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010280241] [2021-11-03 04:38:11,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:38:11,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:38:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:11,846 INFO L87 Difference]: Start difference. First operand 106 states and 122 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) [2021-11-03 04:38:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:12,313 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2021-11-03 04:38:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:38:12,314 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 [2021-11-03 04:38:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:12,315 INFO L225 Difference]: With dead ends: 174 [2021-11-03 04:38:12,315 INFO L226 Difference]: Without dead ends: 174 [2021-11-03 04:38:12,315 INFO L786 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 [2021-11-03 04:38:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-03 04:38:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 105. [2021-11-03 04:38:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.7647058823529411) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-03 04:38:12,323 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 5 [2021-11-03 04:38:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:12,323 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-03 04:38:12,323 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) [2021-11-03 04:38:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-03 04:38:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:38:12,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:12,324 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:12,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:12,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:12,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:12,536 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2021-11-03 04:38:12,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:12,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493586541] [2021-11-03 04:38:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:12,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:12,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:12,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:12,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:38:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:12,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:12,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:12,658 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 [2021-11-03 04:38:12,703 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:38:12,704 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 [2021-11-03 04:38:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:12,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:12,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:12,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493586541] [2021-11-03 04:38:12,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493586541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:12,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:12,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:38:12,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901789386] [2021-11-03 04:38:12,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:38:12,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:38:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:12,788 INFO L87 Difference]: Start difference. First operand 105 states and 120 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) [2021-11-03 04:38:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:13,067 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-11-03 04:38:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:13,068 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 [2021-11-03 04:38:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:13,069 INFO L225 Difference]: With dead ends: 151 [2021-11-03 04:38:13,069 INFO L226 Difference]: Without dead ends: 151 [2021-11-03 04:38:13,069 INFO L786 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 [2021-11-03 04:38:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-03 04:38:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2021-11-03 04:38:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 100 states have internal predecessors, (115), 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) [2021-11-03 04:38:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2021-11-03 04:38:13,076 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 9 [2021-11-03 04:38:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:13,076 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2021-11-03 04:38:13,077 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) [2021-11-03 04:38:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2021-11-03 04:38:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:38:13,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:13,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:13,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:13,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:13,289 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:13,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2021-11-03 04:38:13,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:13,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566745262] [2021-11-03 04:38:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:13,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:13,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:13,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:38:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:13,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:38:13,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:13,417 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 [2021-11-03 04:38:13,429 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 [2021-11-03 04:38:13,500 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:38:13,501 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 26 treesize of output 28 [2021-11-03 04:38:13,512 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:38:13,512 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 25 treesize of output 21 [2021-11-03 04:38:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:13,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:15,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:15,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566745262] [2021-11-03 04:38:15,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566745262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:15,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:15,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:38:15,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673843642] [2021-11-03 04:38:15,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:38:15,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:38:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:38:15,862 INFO L87 Difference]: Start difference. First operand 101 states and 115 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) [2021-11-03 04:38:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:23,738 INFO L93 Difference]: Finished difference Result 349 states and 379 transitions. [2021-11-03 04:38:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:38:23,739 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 [2021-11-03 04:38:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:23,741 INFO L225 Difference]: With dead ends: 349 [2021-11-03 04:38:23,742 INFO L226 Difference]: Without dead ends: 349 [2021-11-03 04:38:23,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:38:23,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-03 04:38:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 97. [2021-11-03 04:38:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 96 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) [2021-11-03 04:38:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2021-11-03 04:38:23,748 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 9 [2021-11-03 04:38:23,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:23,749 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2021-11-03 04:38:23,749 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) [2021-11-03 04:38:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2021-11-03 04:38:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:38:23,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:23,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:23,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:23,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:23,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2021-11-03 04:38:23,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:23,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725709897] [2021-11-03 04:38:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:23,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:23,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:24,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:38:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:24,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:38:24,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:24,093 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 [2021-11-03 04:38:24,116 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 [2021-11-03 04:38:24,163 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 [2021-11-03 04:38:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:24,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:24,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:24,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725709897] [2021-11-03 04:38:24,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725709897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:24,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:24,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:38:24,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957820390] [2021-11-03 04:38:24,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:38:24,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:38:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:38:24,258 INFO L87 Difference]: Start difference. First operand 97 states and 110 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) [2021-11-03 04:38:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:24,664 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2021-11-03 04:38:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:38:24,664 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 [2021-11-03 04:38:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:24,665 INFO L225 Difference]: With dead ends: 106 [2021-11-03 04:38:24,665 INFO L226 Difference]: Without dead ends: 106 [2021-11-03 04:38:24,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:38:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-03 04:38:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2021-11-03 04:38:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.619718309859155) internal successors, (115), 99 states have internal predecessors, (115), 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) [2021-11-03 04:38:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2021-11-03 04:38:24,670 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 13 [2021-11-03 04:38:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:24,670 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2021-11-03 04:38:24,670 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) [2021-11-03 04:38:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2021-11-03 04:38:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:38:24,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:24,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:24,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:24,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:24,883 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2021-11-03 04:38:24,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:24,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300744403] [2021-11-03 04:38:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:24,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:24,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:24,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:38:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:24,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:38:24,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:25,014 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 [2021-11-03 04:38:25,048 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 [2021-11-03 04:38:25,059 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 [2021-11-03 04:38:25,179 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 [2021-11-03 04:38:25,185 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 [2021-11-03 04:38:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:25,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:25,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:25,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300744403] [2021-11-03 04:38:25,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300744403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:25,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:25,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:38:25,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307772405] [2021-11-03 04:38:25,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:38:25,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:38:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:38:25,736 INFO L87 Difference]: Start difference. First operand 100 states and 115 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) [2021-11-03 04:38:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:27,109 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2021-11-03 04:38:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:38:27,110 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 [2021-11-03 04:38:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:27,111 INFO L225 Difference]: With dead ends: 101 [2021-11-03 04:38:27,111 INFO L226 Difference]: Without dead ends: 101 [2021-11-03 04:38:27,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:38:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-03 04:38:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-11-03 04:38:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.591549295774648) internal successors, (113), 99 states have internal predecessors, (113), 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) [2021-11-03 04:38:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2021-11-03 04:38:27,115 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 13 [2021-11-03 04:38:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:27,115 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2021-11-03 04:38:27,115 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) [2021-11-03 04:38:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2021-11-03 04:38:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:38:27,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:27,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:27,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:27,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:27,324 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1960329087, now seen corresponding path program 1 times [2021-11-03 04:38:27,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:27,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342684668] [2021-11-03 04:38:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:27,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:27,326 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:27,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:38:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:27,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:38:27,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:27,635 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 [2021-11-03 04:38:27,670 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 [2021-11-03 04:38:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:27,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:27,718 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 [2021-11-03 04:38:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:27,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:27,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342684668] [2021-11-03 04:38:27,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342684668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:27,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:27,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:38:27,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89534426] [2021-11-03 04:38:27,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:38:27,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:38:27,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:38:27,887 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:28,187 INFO L93 Difference]: Finished difference Result 139 states and 148 transitions. [2021-11-03 04:38:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:38:28,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:38:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:28,188 INFO L225 Difference]: With dead ends: 139 [2021-11-03 04:38:28,189 INFO L226 Difference]: Without dead ends: 139 [2021-11-03 04:38:28,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:38:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-03 04:38:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 100. [2021-11-03 04:38:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 99 states have internal predecessors, (112), 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) [2021-11-03 04:38:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-11-03 04:38:28,192 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 16 [2021-11-03 04:38:28,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:28,192 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-11-03 04:38:28,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-11-03 04:38:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:38:28,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:28,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:28,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:38:28,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:28,405 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1960329083, now seen corresponding path program 1 times [2021-11-03 04:38:28,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:28,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371644158] [2021-11-03 04:38:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:28,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:28,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:28,407 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:28,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:38:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:28,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:38:28,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:28,561 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 [2021-11-03 04:38:28,751 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 [2021-11-03 04:38:28,794 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 19 treesize of output 11 [2021-11-03 04:38:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:28,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:28,853 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 38 treesize of output 34 [2021-11-03 04:38:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:29,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:29,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371644158] [2021-11-03 04:38:29,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371644158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:29,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:29,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:38:29,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831214114] [2021-11-03 04:38:29,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:38:29,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:38:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:38:29,200 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:29,737 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2021-11-03 04:38:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:38:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:38:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:29,738 INFO L225 Difference]: With dead ends: 131 [2021-11-03 04:38:29,738 INFO L226 Difference]: Without dead ends: 131 [2021-11-03 04:38:29,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:38:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-03 04:38:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2021-11-03 04:38:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 99 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) [2021-11-03 04:38:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2021-11-03 04:38:29,743 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 16 [2021-11-03 04:38:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:29,743 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2021-11-03 04:38:29,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2021-11-03 04:38:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:38:29,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:29,745 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:29,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:29,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:29,955 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1960329082, now seen corresponding path program 1 times [2021-11-03 04:38:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:29,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839295197] [2021-11-03 04:38:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:29,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:29,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:29,958 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:38:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:30,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:38:30,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:30,127 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 [2021-11-03 04:38:30,394 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 [2021-11-03 04:38:30,406 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 [2021-11-03 04:38:30,508 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 [2021-11-03 04:38:30,513 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 [2021-11-03 04:38:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:30,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:30,713 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 60 treesize of output 56 [2021-11-03 04:38:30,718 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 90 treesize of output 82 [2021-11-03 04:38:31,057 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 [2021-11-03 04:38:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:31,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:31,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839295197] [2021-11-03 04:38:31,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839295197] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:31,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:31,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:38:31,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987562749] [2021-11-03 04:38:31,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:38:31,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:38:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:38:31,400 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-03 04:38:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:33,077 INFO L93 Difference]: Finished difference Result 235 states and 251 transitions. [2021-11-03 04:38:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:38:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:38:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:33,082 INFO L225 Difference]: With dead ends: 235 [2021-11-03 04:38:33,082 INFO L226 Difference]: Without dead ends: 235 [2021-11-03 04:38:33,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:38:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-03 04:38:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 100. [2021-11-03 04:38:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5492957746478873) 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) [2021-11-03 04:38:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2021-11-03 04:38:33,088 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 16 [2021-11-03 04:38:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:33,088 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2021-11-03 04:38:33,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-03 04:38:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2021-11-03 04:38:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:38:33,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:33,090 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:33,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:33,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:33,295 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-03 04:38:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2021-11-03 04:38:33,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:33,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781284263] [2021-11-03 04:38:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:33,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:33,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:33,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:38:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:38:33,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:33,537 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 [2021-11-03 04:38:33,588 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 04:38:33,588 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 [2021-11-03 04:38:33,638 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 26 treesize of output 22 [2021-11-03 04:38:33,956 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-03 04:38:33,957 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 136 treesize of output 47 [2021-11-03 04:38:34,049 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 44 treesize of output 26 [2021-11-03 04:38:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:38:34,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:34,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:38:34,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-03 04:38:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:46,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:46,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781284263] [2021-11-03 04:38:46,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781284263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:38:46,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1123565218] [2021-11-03 04:38:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:46,963 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:38:46,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:38:46,977 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:38:46,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0402c150-b9ba-4655-bdda-ccf2e0639786/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-03 04:38:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:47,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:38:47,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:47,467 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:38:47,467 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 [2021-11-03 04:38:47,537 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 04:38:47,537 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 [2021-11-03 04:38:47,583 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 [2021-11-03 04:38:47,962 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-03 04:38:47,963 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 136 treesize of output 47 [2021-11-03 04:38:48,064 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 44 treesize of output 26 [2021-11-03 04:38:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:38:48,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:48,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:38:48,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-03 04:38:50,221 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (ULTIMATE.start_create_data_~counter~0 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem10.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem10.base| (let ((.cse0 (bvmul ULTIMATE.start_create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem10.base|) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| .cse0) v_DerPreprocessor_5) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| (_ bv1 32) .cse0) v_DerPreprocessor_6) (bvadd (_ bv2 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse0) v_DerPreprocessor_7) (bvadd (_ bv3 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse0) v_DerPreprocessor_8))) c_ULTIMATE.start_create_data_~data~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_create_data_~data~0.offset))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-03 04:38:52,282 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (ULTIMATE.start_create_data_~counter~0 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem10.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv4 32) c_ULTIMATE.start_create_data_~data~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_data_~data~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse0 (let ((.cse1 (bvmul ULTIMATE.start_create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| .cse1) v_DerPreprocessor_5) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| (_ bv1 32) .cse1) v_DerPreprocessor_6) (bvadd (_ bv2 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse1) v_DerPreprocessor_7) (bvadd (_ bv3 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse1) v_DerPreprocessor_8)))) c_ULTIMATE.start_create_data_~data~0.base) .cse2)))))))))))))) (_ bv1 1)))) is different from false