./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:53:02,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:53:02,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:53:02,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:53:02,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:53:02,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:53:02,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:53:02,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:53:02,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:53:02,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:53:02,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:53:02,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:53:02,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:53:02,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:53:02,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:53:02,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:53:02,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:53:02,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:53:02,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:53:02,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:53:02,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:53:02,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:53:02,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:53:02,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:53:02,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:53:02,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:53:02,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:53:02,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:53:02,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:53:02,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:53:02,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:53:02,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:53:02,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:53:02,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:53:02,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:53:02,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:53:02,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:53:02,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:53:02,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:53:02,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:53:02,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:53:02,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:53:02,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:53:02,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:53:02,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:53:02,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:53:02,631 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:53:02,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:53:02,632 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:53:02,632 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:53:02,632 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:53:02,632 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:53:02,633 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:53:02,633 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:53:02,633 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:53:02,634 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:53:02,634 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:53:02,634 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:53:02,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:53:02,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:53:02,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:53:02,636 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:53:02,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:53:02,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:53:02,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:53:02,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:53:02,638 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:53:02,638 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:53:02,638 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:53:02,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:53:02,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:53:02,639 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:53:02,639 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:53:02,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:53:02,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:53:02,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:53:02,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:53:02,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:53:02,641 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:53:02,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:53:02,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:53:02,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:53:02,642 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_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2021-11-19 14:53:02,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:53:02,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:53:02,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:53:02,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:53:02,901 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:53:02,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-19 14:53:02,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/807f3167e/b365e3e2b0374f35878886866bcaa52c/FLAG1b53b8e00 [2021-11-19 14:53:03,669 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:53:03,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-19 14:53:03,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/807f3167e/b365e3e2b0374f35878886866bcaa52c/FLAG1b53b8e00 [2021-11-19 14:53:03,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/807f3167e/b365e3e2b0374f35878886866bcaa52c [2021-11-19 14:53:03,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:53:03,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:53:03,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:53:03,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:53:03,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:53:03,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:53:03" (1/1) ... [2021-11-19 14:53:03,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c2613c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:03, skipping insertion in model container [2021-11-19 14:53:03,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:53:03" (1/1) ... [2021-11-19 14:53:03,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:53:03,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:53:04,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-19 14:53:04,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-19 14:53:04,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-19 14:53:04,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-19 14:53:04,728 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:53:04,741 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:53:04,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59a4e259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:04, skipping insertion in model container [2021-11-19 14:53:04,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:53:04,742 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:53:04,744 INFO L158 Benchmark]: Toolchain (without parser) took 876.86ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:53:04,745 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 75.5MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 39.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:53:04,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 873.72ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:53:04,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 75.5MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 39.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 873.72ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:53:07,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:53:07,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:53:07,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:53:07,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:53:07,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:53:07,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:53:07,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:53:07,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:53:07,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:53:07,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:53:07,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:53:07,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:53:07,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:53:07,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:53:07,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:53:07,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:53:07,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:53:07,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:53:07,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:53:07,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:53:07,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:53:07,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:53:07,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:53:07,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:53:07,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:53:07,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:53:07,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:53:07,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:53:07,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:53:07,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:53:07,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:53:07,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:53:07,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:53:07,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:53:07,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:53:07,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:53:07,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:53:07,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:53:07,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:53:07,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:53:07,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:53:07,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:53:07,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:53:07,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:53:07,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:53:07,247 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:53:07,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:53:07,248 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:53:07,248 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:53:07,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:53:07,248 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:53:07,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:53:07,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:53:07,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:53:07,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:53:07,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:53:07,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:53:07,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:53:07,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:53:07,253 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:53:07,253 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:53:07,253 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:53:07,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:53:07,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:53:07,254 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:53:07,254 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:53:07,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:53:07,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:53:07,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:53:07,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:53:07,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:53:07,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:53:07,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:53:07,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:53:07,257 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:53:07,257 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:53:07,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:53:07,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:53:07,258 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_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2021-11-19 14:53:07,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:53:07,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:53:07,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:53:07,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:53:07,654 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:53:07,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-19 14:53:07,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/b0d4d198e/78b36e5383884a2d9cedcaf24f7d5970/FLAGd68a85523 [2021-11-19 14:53:08,517 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:53:08,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-19 14:53:08,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/b0d4d198e/78b36e5383884a2d9cedcaf24f7d5970/FLAGd68a85523 [2021-11-19 14:53:08,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/data/b0d4d198e/78b36e5383884a2d9cedcaf24f7d5970 [2021-11-19 14:53:08,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:53:08,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:53:08,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:53:08,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:53:08,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:53:08,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:53:08" (1/1) ... [2021-11-19 14:53:08,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1b73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:08, skipping insertion in model container [2021-11-19 14:53:08,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:53:08" (1/1) ... [2021-11-19 14:53:08,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:53:08,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:53:09,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-19 14:53:09,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-19 14:53:09,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-19 14:53:09,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-19 14:53:09,681 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:53:09,694 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:53:09,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:53:09,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-19 14:53:09,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-19 14:53:09,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-19 14:53:09,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-19 14:53:09,840 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:53:09,846 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:53:09,884 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-19 14:53:09,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-19 14:53:09,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-19 14:53:09,974 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-19 14:53:09,985 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:53:10,101 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:53:10,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10 WrapperNode [2021-11-19 14:53:10,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:53:10,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:53:10,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:53:10,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:53:10,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,318 INFO L137 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1203 [2021-11-19 14:53:10,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:53:10,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:53:10,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:53:10,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:53:10,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:53:10,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:53:10,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:53:10,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:53:10,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (1/1) ... [2021-11-19 14:53:10,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:53:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:53:10,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:53:10,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:53:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:53:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:53:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:53:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:53:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:53:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:53:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:53:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:53:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-19 14:53:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-19 14:53:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:53:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:53:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:53:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:53:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-19 14:53:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-19 14:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-19 14:53:10,576 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-19 14:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:53:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:53:10,950 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:53:10,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:53:17,451 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:53:17,482 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:53:17,486 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-19 14:53:17,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:53:17 BoogieIcfgContainer [2021-11-19 14:53:17,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:53:17,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:53:17,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:53:17,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:53:17,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:53:08" (1/3) ... [2021-11-19 14:53:17,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e87bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:53:17, skipping insertion in model container [2021-11-19 14:53:17,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:53:10" (2/3) ... [2021-11-19 14:53:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e87bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:53:17, skipping insertion in model container [2021-11-19 14:53:17,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:53:17" (3/3) ... [2021-11-19 14:53:17,502 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2021-11-19 14:53:17,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:53:17,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2021-11-19 14:53:17,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:53:17,590 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:53:17,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2021-11-19 14:53:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:53:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:53:17,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:17,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:53:17,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2021-11-19 14:53:17,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:17,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740196419] [2021-11-19 14:53:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:17,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:17,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:17,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:53:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:17,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:53:17,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:17,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:53:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:18,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:18,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:18,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740196419] [2021-11-19 14:53:18,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740196419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:18,054 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:18,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:53:18,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315446085] [2021-11-19 14:53:18,057 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:18,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:53:18,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:53:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:53:18,130 INFO L87 Difference]: Start difference. First operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:21,491 INFO L93 Difference]: Finished difference Result 1537 states and 1627 transitions. [2021-11-19 14:53:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:53:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-19 14:53:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:21,522 INFO L225 Difference]: With dead ends: 1537 [2021-11-19 14:53:21,523 INFO L226 Difference]: Without dead ends: 1535 [2021-11-19 14:53:21,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:53:21,529 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 906 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:21,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 1258 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:53:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-19 14:53:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1300. [2021-11-19 14:53:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 660 states have (on average 2.106060606060606) internal successors, (1390), 1281 states have internal predecessors, (1390), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 14:53:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1420 transitions. [2021-11-19 14:53:21,662 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1420 transitions. Word has length 3 [2021-11-19 14:53:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:21,663 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1420 transitions. [2021-11-19 14:53:21,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1420 transitions. [2021-11-19 14:53:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:53:21,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:21,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:53:21,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:21,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:21,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:21,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2021-11-19 14:53:21,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:21,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861731355] [2021-11-19 14:53:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:21,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:21,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:21,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:53:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:53:22,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:22,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:53:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:22,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:22,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:22,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861731355] [2021-11-19 14:53:22,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861731355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:22,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:22,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:53:22,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591716500] [2021-11-19 14:53:22,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:22,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:53:22,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:53:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:53:22,179 INFO L87 Difference]: Start difference. First operand 1300 states and 1420 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:28,413 INFO L93 Difference]: Finished difference Result 1927 states and 2053 transitions. [2021-11-19 14:53:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:53:28,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-11-19 14:53:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:28,428 INFO L225 Difference]: With dead ends: 1927 [2021-11-19 14:53:28,428 INFO L226 Difference]: Without dead ends: 1927 [2021-11-19 14:53:28,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:53:28,431 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 2160 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:28,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 1653 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 14:53:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2021-11-19 14:53:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1296. [2021-11-19 14:53:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 665 states have (on average 2.0842105263157893) internal successors, (1386), 1277 states have internal predecessors, (1386), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 14:53:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1416 transitions. [2021-11-19 14:53:28,480 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1416 transitions. Word has length 3 [2021-11-19 14:53:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:28,481 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1416 transitions. [2021-11-19 14:53:28,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1416 transitions. [2021-11-19 14:53:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:53:28,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:28,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:28,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:28,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:28,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2021-11-19 14:53:28,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:28,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129999070] [2021-11-19 14:53:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:28,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:28,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:28,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:28,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:53:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:28,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:53:28,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:28,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:53:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:28,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:28,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:28,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129999070] [2021-11-19 14:53:28,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129999070] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:28,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:28,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:53:28,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430918858] [2021-11-19 14:53:28,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:28,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:53:28,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:53:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:53:28,945 INFO L87 Difference]: Start difference. First operand 1296 states and 1416 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:34,006 INFO L93 Difference]: Finished difference Result 2252 states and 2407 transitions. [2021-11-19 14:53:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:53:34,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 14:53:34,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:34,034 INFO L225 Difference]: With dead ends: 2252 [2021-11-19 14:53:34,034 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 14:53:34,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:53:34,036 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 2320 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:34,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 2554 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 14:53:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 14:53:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1251. [2021-11-19 14:53:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 665 states have (on average 2.01203007518797) internal successors, (1338), 1232 states have internal predecessors, (1338), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 14:53:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1368 transitions. [2021-11-19 14:53:34,085 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1368 transitions. Word has length 9 [2021-11-19 14:53:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:34,086 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1368 transitions. [2021-11-19 14:53:34,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1368 transitions. [2021-11-19 14:53:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:53:34,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:34,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:34,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:34,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:34,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2021-11-19 14:53:34,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:34,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302674820] [2021-11-19 14:53:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:34,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:34,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:34,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:34,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:53:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:34,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:53:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:34,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:53:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:34,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:34,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:34,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302674820] [2021-11-19 14:53:34,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302674820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:34,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:34,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:53:34,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239695852] [2021-11-19 14:53:34,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:34,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:53:34,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:53:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:53:34,683 INFO L87 Difference]: Start difference. First operand 1251 states and 1368 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:44,366 INFO L93 Difference]: Finished difference Result 1880 states and 2007 transitions. [2021-11-19 14:53:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:53:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 14:53:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:44,378 INFO L225 Difference]: With dead ends: 1880 [2021-11-19 14:53:44,378 INFO L226 Difference]: Without dead ends: 1880 [2021-11-19 14:53:44,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:53:44,380 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 2462 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:44,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 3352 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-19 14:53:44,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-11-19 14:53:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1241. [2021-11-19 14:53:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 665 states have (on average 1.9924812030075187) internal successors, (1325), 1222 states have internal predecessors, (1325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 14:53:44,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2021-11-19 14:53:44,421 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 9 [2021-11-19 14:53:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:44,421 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2021-11-19 14:53:44,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2021-11-19 14:53:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:53:44,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:44,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:44,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:44,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:44,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:44,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2021-11-19 14:53:44,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:44,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199421289] [2021-11-19 14:53:44,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:44,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:44,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:44,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:53:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:44,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:53:44,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:44,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:44,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:44,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199421289] [2021-11-19 14:53:44,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199421289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:44,980 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:44,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:53:44,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393017245] [2021-11-19 14:53:44,981 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:44,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:53:44,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:53:44,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:53:44,983 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:46,089 INFO L93 Difference]: Finished difference Result 1885 states and 2048 transitions. [2021-11-19 14:53:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:53:46,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 14:53:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:46,099 INFO L225 Difference]: With dead ends: 1885 [2021-11-19 14:53:46,099 INFO L226 Difference]: Without dead ends: 1885 [2021-11-19 14:53:46,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:53:46,101 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 745 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:46,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3832 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:53:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-11-19 14:53:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1487. [2021-11-19 14:53:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 908 states have (on average 1.9625550660792952) internal successors, (1782), 1465 states have internal predecessors, (1782), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:53:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1818 transitions. [2021-11-19 14:53:46,148 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1818 transitions. Word has length 11 [2021-11-19 14:53:46,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:46,149 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 1818 transitions. [2021-11-19 14:53:46,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1818 transitions. [2021-11-19 14:53:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:53:46,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:46,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:46,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:46,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:46,362 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2126591358, now seen corresponding path program 1 times [2021-11-19 14:53:46,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:46,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070901698] [2021-11-19 14:53:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:46,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:46,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:46,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:46,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:53:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:46,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:53:46,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:46,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:53:46,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:53:46,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:53:46,625 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 14:53:46,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 14:53:46,704 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 14:53:46,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 14:53:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:46,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:46,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:46,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070901698] [2021-11-19 14:53:46,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070901698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:46,824 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:46,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:53:46,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748541383] [2021-11-19 14:53:46,824 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:53:46,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:53:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:53:46,825 INFO L87 Difference]: Start difference. First operand 1487 states and 1818 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:48,617 INFO L93 Difference]: Finished difference Result 1989 states and 2394 transitions. [2021-11-19 14:53:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:53:48,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-19 14:53:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:48,628 INFO L225 Difference]: With dead ends: 1989 [2021-11-19 14:53:48,628 INFO L226 Difference]: Without dead ends: 1989 [2021-11-19 14:53:48,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:53:48,630 INFO L933 BasicCegarLoop]: 1252 mSDtfsCounter, 996 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:48,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 3592 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:53:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2021-11-19 14:53:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1486. [2021-11-19 14:53:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 907 states have (on average 1.9625137816979052) internal successors, (1780), 1464 states have internal predecessors, (1780), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:53:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1816 transitions. [2021-11-19 14:53:48,683 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1816 transitions. Word has length 14 [2021-11-19 14:53:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:48,683 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 1816 transitions. [2021-11-19 14:53:48,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1816 transitions. [2021-11-19 14:53:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 14:53:48,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:48,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:48,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:48,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:48,903 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2021-11-19 14:53:48,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:48,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671276789] [2021-11-19 14:53:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:48,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:48,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:48,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:53:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:49,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:53:49,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:49,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:49,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:49,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671276789] [2021-11-19 14:53:49,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671276789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:49,202 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:49,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:53:49,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909605819] [2021-11-19 14:53:49,202 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:49,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:53:49,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:53:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:53:49,204 INFO L87 Difference]: Start difference. First operand 1486 states and 1816 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:49,248 INFO L93 Difference]: Finished difference Result 1426 states and 1730 transitions. [2021-11-19 14:53:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:53:49,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-19 14:53:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:49,258 INFO L225 Difference]: With dead ends: 1426 [2021-11-19 14:53:49,258 INFO L226 Difference]: Without dead ends: 1426 [2021-11-19 14:53:49,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:53:49,263 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 1157 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:49,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1369 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:53:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-11-19 14:53:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-11-19 14:53:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 871 states have (on average 1.9448909299655568) internal successors, (1694), 1404 states have internal predecessors, (1694), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:53:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1730 transitions. [2021-11-19 14:53:49,308 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1730 transitions. Word has length 19 [2021-11-19 14:53:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:49,309 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 1730 transitions. [2021-11-19 14:53:49,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:49,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1730 transitions. [2021-11-19 14:53:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:53:49,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:49,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:49,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 14:53:49,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:49,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2021-11-19 14:53:49,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:49,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318454490] [2021-11-19 14:53:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:49,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:49,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:49,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:53:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:49,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:53:49,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:49,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:49,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:49,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318454490] [2021-11-19 14:53:49,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318454490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:49,847 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:49,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:53:49,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585615394] [2021-11-19 14:53:49,848 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:49,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:53:49,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:49,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:53:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:53:49,849 INFO L87 Difference]: Start difference. First operand 1426 states and 1730 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:49,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:49,935 INFO L93 Difference]: Finished difference Result 1398 states and 1674 transitions. [2021-11-19 14:53:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:53:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 21 [2021-11-19 14:53:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:49,943 INFO L225 Difference]: With dead ends: 1398 [2021-11-19 14:53:49,944 INFO L226 Difference]: Without dead ends: 1398 [2021-11-19 14:53:49,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:53:49,945 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 1128 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:49,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2503 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:53:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-19 14:53:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1396. [2021-11-19 14:53:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 855 states have (on average 1.9134502923976608) internal successors, (1636), 1374 states have internal predecessors, (1636), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:53:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1672 transitions. [2021-11-19 14:53:49,979 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1672 transitions. Word has length 21 [2021-11-19 14:53:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:49,979 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1672 transitions. [2021-11-19 14:53:49,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1672 transitions. [2021-11-19 14:53:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 14:53:49,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:49,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:49,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:50,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:50,193 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:50,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2021-11-19 14:53:50,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:50,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839290261] [2021-11-19 14:53:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:50,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:50,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:50,195 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:50,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:53:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:50,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:53:50,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:50,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:53:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:50,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:50,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:50,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839290261] [2021-11-19 14:53:50,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839290261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:50,672 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:50,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:53:50,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455957914] [2021-11-19 14:53:50,672 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:50,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:53:50,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:53:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:53:50,675 INFO L87 Difference]: Start difference. First operand 1396 states and 1672 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:55,578 INFO L93 Difference]: Finished difference Result 2553 states and 3058 transitions. [2021-11-19 14:53:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:53:55,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-19 14:53:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:55,591 INFO L225 Difference]: With dead ends: 2553 [2021-11-19 14:53:55,591 INFO L226 Difference]: Without dead ends: 2553 [2021-11-19 14:53:55,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:53:55,592 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 2401 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:55,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2404 Valid, 2702 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:53:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-11-19 14:53:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1392. [2021-11-19 14:53:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 855 states have (on average 1.904093567251462) internal successors, (1628), 1370 states have internal predecessors, (1628), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:53:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1664 transitions. [2021-11-19 14:53:55,632 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1664 transitions. Word has length 35 [2021-11-19 14:53:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:55,633 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 1664 transitions. [2021-11-19 14:53:55,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:53:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1664 transitions. [2021-11-19 14:53:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 14:53:55,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:55,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:55,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:55,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:53:55,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:53:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2021-11-19 14:53:55,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:55,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041545716] [2021-11-19 14:53:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:55,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:55,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:55,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:55,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:53:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:55,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:53:55,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:56,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:53:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:56,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:53:56,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:56,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041545716] [2021-11-19 14:53:56,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041545716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:56,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:53:56,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:53:56,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449375496] [2021-11-19 14:53:56,933 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:56,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:53:56,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:53:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:53:56,934 INFO L87 Difference]: Start difference. First operand 1392 states and 1664 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:11,252 INFO L93 Difference]: Finished difference Result 2203 states and 2643 transitions. [2021-11-19 14:54:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:54:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 35 [2021-11-19 14:54:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:11,265 INFO L225 Difference]: With dead ends: 2203 [2021-11-19 14:54:11,266 INFO L226 Difference]: Without dead ends: 2203 [2021-11-19 14:54:11,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:54:11,267 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 2182 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:11,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2182 Valid, 5065 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2021-11-19 14:54:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-11-19 14:54:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1388. [2021-11-19 14:54:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 855 states have (on average 1.894736842105263) internal successors, (1620), 1366 states have internal predecessors, (1620), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:54:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1656 transitions. [2021-11-19 14:54:11,304 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1656 transitions. Word has length 35 [2021-11-19 14:54:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:11,305 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1656 transitions. [2021-11-19 14:54:11,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1656 transitions. [2021-11-19 14:54:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 14:54:11,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:11,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:11,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:11,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:11,519 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2063645645, now seen corresponding path program 1 times [2021-11-19 14:54:11,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:11,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184604646] [2021-11-19 14:54:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:11,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:11,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:11,523 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:11,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:54:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:11,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:54:11,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:11,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:12,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:12,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184604646] [2021-11-19 14:54:12,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184604646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:12,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:54:12,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334980737] [2021-11-19 14:54:12,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:12,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:54:12,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:54:12,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:54:12,140 INFO L87 Difference]: Start difference. First operand 1388 states and 1656 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:12,218 INFO L93 Difference]: Finished difference Result 1376 states and 1636 transitions. [2021-11-19 14:54:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:54:12,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-19 14:54:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:12,227 INFO L225 Difference]: With dead ends: 1376 [2021-11-19 14:54:12,227 INFO L226 Difference]: Without dead ends: 1376 [2021-11-19 14:54:12,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:54:12,229 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 1104 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:12,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 2412 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:54:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-19 14:54:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-11-19 14:54:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 843 states have (on average 1.8979833926453145) internal successors, (1600), 1354 states have internal predecessors, (1600), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 14:54:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1636 transitions. [2021-11-19 14:54:12,259 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1636 transitions. Word has length 54 [2021-11-19 14:54:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:12,260 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1636 transitions. [2021-11-19 14:54:12,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1636 transitions. [2021-11-19 14:54:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:54:12,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:12,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:12,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:12,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:12,477 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash -202859289, now seen corresponding path program 1 times [2021-11-19 14:54:12,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:12,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780313172] [2021-11-19 14:54:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:12,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:12,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:12,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:54:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:12,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:54:12,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:12,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:54:12,856 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:54:12,857 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 [2021-11-19 14:54:12,987 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-19 14:54:12,988 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 3 case distinctions, treesize of input 35 treesize of output 46 [2021-11-19 14:54:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:13,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:13,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:13,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780313172] [2021-11-19 14:54:13,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780313172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:13,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:13,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:54:13,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354605195] [2021-11-19 14:54:13,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:13,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:54:13,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:54:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:54:13,941 INFO L87 Difference]: Start difference. First operand 1376 states and 1636 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:15,983 INFO L93 Difference]: Finished difference Result 1382 states and 1643 transitions. [2021-11-19 14:54:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:54:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 14:54:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:15,991 INFO L225 Difference]: With dead ends: 1382 [2021-11-19 14:54:15,991 INFO L226 Difference]: Without dead ends: 1382 [2021-11-19 14:54:15,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:54:15,992 INFO L933 BasicCegarLoop]: 1159 mSDtfsCounter, 102 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:15,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1859 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 545 Invalid, 0 Unknown, 28 Unchecked, 2.0s Time] [2021-11-19 14:54:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-11-19 14:54:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1381. [2021-11-19 14:54:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 847 states have (on average 1.8949232585596223) internal successors, (1605), 1358 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 14:54:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1643 transitions. [2021-11-19 14:54:16,020 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1643 transitions. Word has length 62 [2021-11-19 14:54:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:16,020 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1643 transitions. [2021-11-19 14:54:16,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1643 transitions. [2021-11-19 14:54:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:54:16,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:16,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:16,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:16,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:16,246 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:16,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -202859288, now seen corresponding path program 1 times [2021-11-19 14:54:16,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:16,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833698495] [2021-11-19 14:54:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:16,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:16,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:16,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:16,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:54:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:16,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:54:16,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:16,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:54:16,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:54:16,678 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:54:16,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-19 14:54:16,691 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:54:16,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:54:16,879 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-19 14:54:16,879 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 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-19 14:54:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:23,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:26,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:26,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833698495] [2021-11-19 14:54:26,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833698495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:26,034 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:26,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-19 14:54:26,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019805380] [2021-11-19 14:54:26,034 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:26,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:54:26,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:54:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:54:26,035 INFO L87 Difference]: Start difference. First operand 1381 states and 1643 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:36,668 INFO L93 Difference]: Finished difference Result 1381 states and 1642 transitions. [2021-11-19 14:54:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:54:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 14:54:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:36,675 INFO L225 Difference]: With dead ends: 1381 [2021-11-19 14:54:36,676 INFO L226 Difference]: Without dead ends: 1381 [2021-11-19 14:54:36,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:54:36,676 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 78 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1908 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:36,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4074 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1091 Invalid, 0 Unknown, 1908 Unchecked, 10.6s Time] [2021-11-19 14:54:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-11-19 14:54:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2021-11-19 14:54:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 847 states have (on average 1.8937426210153483) internal successors, (1604), 1358 states have internal predecessors, (1604), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 14:54:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1642 transitions. [2021-11-19 14:54:36,718 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1642 transitions. Word has length 62 [2021-11-19 14:54:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:36,720 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1642 transitions. [2021-11-19 14:54:36,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1642 transitions. [2021-11-19 14:54:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:54:36,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:36,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:36,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:36,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:36,936 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1136013504, now seen corresponding path program 1 times [2021-11-19 14:54:36,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:36,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473947487] [2021-11-19 14:54:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:36,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:36,939 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:36,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:54:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:37,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:54:37,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:37,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:37,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:37,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473947487] [2021-11-19 14:54:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473947487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:37,422 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:37,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 14:54:37,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864211487] [2021-11-19 14:54:37,422 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:37,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:54:37,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:54:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:54:37,424 INFO L87 Difference]: Start difference. First operand 1381 states and 1642 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:37,592 INFO L93 Difference]: Finished difference Result 1395 states and 1656 transitions. [2021-11-19 14:54:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:54:37,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-19 14:54:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:37,601 INFO L225 Difference]: With dead ends: 1395 [2021-11-19 14:54:37,602 INFO L226 Difference]: Without dead ends: 1395 [2021-11-19 14:54:37,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:54:37,603 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 20 mSDsluCounter, 7054 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8232 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:37,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 8232 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:54:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-11-19 14:54:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1393. [2021-11-19 14:54:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 856 states have (on average 1.8878504672897196) internal successors, (1616), 1368 states have internal predecessors, (1616), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 14:54:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1656 transitions. [2021-11-19 14:54:37,637 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1656 transitions. Word has length 68 [2021-11-19 14:54:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:37,637 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1656 transitions. [2021-11-19 14:54:37,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:54:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1656 transitions. [2021-11-19 14:54:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:54:37,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:37,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:37,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:37,853 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1078181117, now seen corresponding path program 1 times [2021-11-19 14:54:37,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:37,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958550460] [2021-11-19 14:54:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:37,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:37,857 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:37,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:54:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:38,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:54:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:38,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:38,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:38,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958550460] [2021-11-19 14:54:38,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958550460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:38,803 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:38,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:54:38,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999184927] [2021-11-19 14:54:38,803 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:38,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:54:38,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:54:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:54:38,805 INFO L87 Difference]: Start difference. First operand 1393 states and 1656 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:54:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:39,193 INFO L93 Difference]: Finished difference Result 1437 states and 1704 transitions. [2021-11-19 14:54:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:54:39,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2021-11-19 14:54:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:39,209 INFO L225 Difference]: With dead ends: 1437 [2021-11-19 14:54:39,217 INFO L226 Difference]: Without dead ends: 1437 [2021-11-19 14:54:39,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:54:39,218 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 119 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 6877 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:39,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 6877 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:54:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-11-19 14:54:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1396. [2021-11-19 14:54:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 858 states have (on average 1.8857808857808858) internal successors, (1618), 1370 states have internal predecessors, (1618), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 14:54:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1659 transitions. [2021-11-19 14:54:39,257 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1659 transitions. Word has length 68 [2021-11-19 14:54:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:39,260 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1659 transitions. [2021-11-19 14:54:39,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:54:39,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1659 transitions. [2021-11-19 14:54:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:54:39,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:39,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:39,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:39,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:39,482 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash 396897840, now seen corresponding path program 1 times [2021-11-19 14:54:39,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:39,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007763714] [2021-11-19 14:54:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:39,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:39,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:39,485 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:39,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:54:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:39,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:54:39,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:39,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:54:40,237 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:54:40,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-19 14:54:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:40,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:40,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:40,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007763714] [2021-11-19 14:54:40,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007763714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:40,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:40,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-19 14:54:40,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892928956] [2021-11-19 14:54:40,644 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:40,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:54:40,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:40,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:54:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:54:40,646 INFO L87 Difference]: Start difference. First operand 1396 states and 1659 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 14:54:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:45,944 INFO L93 Difference]: Finished difference Result 2543 states and 3039 transitions. [2021-11-19 14:54:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:54:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-11-19 14:54:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:45,957 INFO L225 Difference]: With dead ends: 2543 [2021-11-19 14:54:45,958 INFO L226 Difference]: Without dead ends: 2543 [2021-11-19 14:54:45,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:54:45,959 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 1609 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 3591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 843 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:45,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 4868 Invalid, 3591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2727 Invalid, 0 Unknown, 843 Unchecked, 5.2s Time] [2021-11-19 14:54:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-11-19 14:54:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1395. [2021-11-19 14:54:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 858 states have (on average 1.8846153846153846) internal successors, (1617), 1369 states have internal predecessors, (1617), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 14:54:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1658 transitions. [2021-11-19 14:54:45,999 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1658 transitions. Word has length 73 [2021-11-19 14:54:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:46,000 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 1658 transitions. [2021-11-19 14:54:46,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 14:54:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1658 transitions. [2021-11-19 14:54:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:54:46,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:46,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:46,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 14:54:46,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:46,218 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:54:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash 396897841, now seen corresponding path program 1 times [2021-11-19 14:54:46,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:46,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563264897] [2021-11-19 14:54:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:46,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:46,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:46,221 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:46,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:54:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:46,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:54:46,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:46,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:54:46,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:54:49,594 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:54:49,594 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 [2021-11-19 14:54:49,604 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:54:49,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-19 14:54:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:54:49,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:10,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:10,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563264897] [2021-11-19 14:55:10,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563264897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:10,623 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:10,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 14:55:10,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063625925] [2021-11-19 14:55:10,624 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:10,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:55:10,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:55:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=98, Unknown=6, NotChecked=0, Total=132 [2021-11-19 14:55:10,625 INFO L87 Difference]: Start difference. First operand 1395 states and 1658 transitions. Second operand has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 14:55:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:22,987 INFO L93 Difference]: Finished difference Result 2588 states and 3144 transitions. [2021-11-19 14:55:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:55:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2021-11-19 14:55:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:23,000 INFO L225 Difference]: With dead ends: 2588 [2021-11-19 14:55:23,001 INFO L226 Difference]: Without dead ends: 2588 [2021-11-19 14:55:23,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=43, Invalid=133, Unknown=6, NotChecked=0, Total=182 [2021-11-19 14:55:23,002 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 3580 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 4536 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 8968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4375 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:23,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 5515 Invalid, 8968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4536 Invalid, 0 Unknown, 4375 Unchecked, 12.1s Time] [2021-11-19 14:55:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-11-19 14:55:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1363. [2021-11-19 14:55:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 860 states have (on average 1.8430232558139534) internal successors, (1585), 1337 states have internal predecessors, (1585), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 14:55:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1626 transitions. [2021-11-19 14:55:23,043 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1626 transitions. Word has length 73 [2021-11-19 14:55:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:23,044 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1626 transitions. [2021-11-19 14:55:23,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 14:55:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1626 transitions. [2021-11-19 14:55:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:55:23,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:23,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:23,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:23,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:23,263 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:55:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1622258381, now seen corresponding path program 1 times [2021-11-19 14:55:23,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:23,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890382956] [2021-11-19 14:55:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:23,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:23,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:23,265 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:23,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:55:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:23,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:55:23,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:23,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:55:23,714 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 24 treesize of output 20 [2021-11-19 14:55:23,763 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 27 treesize of output 15 [2021-11-19 14:55:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:23,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:24,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:24,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890382956] [2021-11-19 14:55:24,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890382956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:24,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:24,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 14:55:24,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650466909] [2021-11-19 14:55:24,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:24,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:55:24,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:24,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:55:24,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:55:24,075 INFO L87 Difference]: Start difference. First operand 1363 states and 1626 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:55:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:30,144 INFO L93 Difference]: Finished difference Result 1371 states and 1634 transitions. [2021-11-19 14:55:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:55:30,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2021-11-19 14:55:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:30,150 INFO L225 Difference]: With dead ends: 1371 [2021-11-19 14:55:30,150 INFO L226 Difference]: Without dead ends: 1371 [2021-11-19 14:55:30,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:55:30,152 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 23 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:30,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4719 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 14:55:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-11-19 14:55:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1370. [2021-11-19 14:55:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 866 states have (on average 1.8394919168591224) internal successors, (1593), 1343 states have internal predecessors, (1593), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 14:55:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1634 transitions. [2021-11-19 14:55:30,181 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1634 transitions. Word has length 80 [2021-11-19 14:55:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:30,182 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1634 transitions. [2021-11-19 14:55:30,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:55:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1634 transitions. [2021-11-19 14:55:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 14:55:30,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:30,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:30,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:30,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:30,399 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:55:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:30,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1249597809, now seen corresponding path program 1 times [2021-11-19 14:55:30,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:30,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874225974] [2021-11-19 14:55:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:30,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:30,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:30,402 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:30,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:55:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 14:55:30,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:30,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:55:30,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:55:30,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 14:55:30,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 14:55:30,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 14:55:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:31,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:32,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:32,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874225974] [2021-11-19 14:55:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874225974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:32,095 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:32,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-19 14:55:32,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781611899] [2021-11-19 14:55:32,096 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:32,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:55:32,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:55:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:55:32,099 INFO L87 Difference]: Start difference. First operand 1370 states and 1634 transitions. Second operand has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 14:55:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:52,226 INFO L93 Difference]: Finished difference Result 1372 states and 1633 transitions. [2021-11-19 14:55:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:55:52,227 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2021-11-19 14:55:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:52,231 INFO L225 Difference]: With dead ends: 1372 [2021-11-19 14:55:52,231 INFO L226 Difference]: Without dead ends: 1372 [2021-11-19 14:55:52,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:55:52,232 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 47 mSDsluCounter, 5372 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6508 SdHoareTripleChecker+Invalid, 3863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:52,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 6508 Invalid, 3863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2021-11-19 14:55:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-11-19 14:55:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1370. [2021-11-19 14:55:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 866 states have (on average 1.838337182448037) internal successors, (1592), 1343 states have internal predecessors, (1592), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-19 14:55:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1633 transitions. [2021-11-19 14:55:52,261 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1633 transitions. Word has length 81 [2021-11-19 14:55:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:52,262 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1633 transitions. [2021-11-19 14:55:52,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 14:55:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1633 transitions. [2021-11-19 14:55:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 14:55:52,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:52,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:52,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:52,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:52,478 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:55:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash -63374884, now seen corresponding path program 1 times [2021-11-19 14:55:52,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:52,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57621900] [2021-11-19 14:55:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:52,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:52,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:52,480 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:52,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:55:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:52,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:55:52,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:53,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:53,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:53,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57621900] [2021-11-19 14:55:53,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57621900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:53,340 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:53,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:55:53,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013272467] [2021-11-19 14:55:53,341 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:53,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:55:53,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:55:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:55:53,343 INFO L87 Difference]: Start difference. First operand 1370 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:55:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:53,540 INFO L93 Difference]: Finished difference Result 1382 states and 1646 transitions. [2021-11-19 14:55:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:55:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2021-11-19 14:55:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:53,547 INFO L225 Difference]: With dead ends: 1382 [2021-11-19 14:55:53,547 INFO L226 Difference]: Without dead ends: 1376 [2021-11-19 14:55:53,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:55:53,548 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 28 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:53,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 4551 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:55:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-19 14:55:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-11-19 14:55:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 871 states have (on average 1.8346727898966706) internal successors, (1598), 1349 states have internal predecessors, (1598), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-19 14:55:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1640 transitions. [2021-11-19 14:55:53,601 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1640 transitions. Word has length 88 [2021-11-19 14:55:53,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:53,601 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1640 transitions. [2021-11-19 14:55:53,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:55:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1640 transitions. [2021-11-19 14:55:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 14:55:53,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:53,603 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:53,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:53,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:53,825 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:55:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1800220956, now seen corresponding path program 1 times [2021-11-19 14:55:53,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:53,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623850857] [2021-11-19 14:55:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:53,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:53,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:53,827 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:53,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:55:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:54,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:55:54,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:54,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:54,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:54,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623850857] [2021-11-19 14:55:54,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623850857] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:54,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1779240591] [2021-11-19 14:55:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:54,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:55:54,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:55:54,596 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:55:54,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 14:55:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:54,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:55:54,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:55,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:55,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1779240591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:55,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137648764] [2021-11-19 14:55:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:55,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:55:55,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:55:55,330 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:55:55,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 14:55:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:55,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:55:55,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:55,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:56,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137648764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:56,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:55:56,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 17 [2021-11-19 14:55:56,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437572197] [2021-11-19 14:55:56,104 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:55:56,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:55:56,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:55:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:55:56,106 INFO L87 Difference]: Start difference. First operand 1376 states and 1640 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:55:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:56,724 INFO L93 Difference]: Finished difference Result 1394 states and 1661 transitions. [2021-11-19 14:55:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:55:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2021-11-19 14:55:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:56,729 INFO L225 Difference]: With dead ends: 1394 [2021-11-19 14:55:56,729 INFO L226 Difference]: Without dead ends: 1385 [2021-11-19 14:55:56,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:55:56,730 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 83 mSDsluCounter, 6839 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 7984 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:56,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 7984 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:55:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2021-11-19 14:55:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2021-11-19 14:55:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 877 states have (on average 1.830102622576967) internal successors, (1605), 1355 states have internal predecessors, (1605), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-19 14:55:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1647 transitions. [2021-11-19 14:55:56,754 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1647 transitions. Word has length 90 [2021-11-19 14:55:56,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:56,754 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1647 transitions. [2021-11-19 14:55:56,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:55:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1647 transitions. [2021-11-19 14:55:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:55:56,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:56,756 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:56,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:56,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:57,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:57,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:57,360 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-19 14:55:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:57,360 INFO L85 PathProgramCache]: Analyzing trace with hash 903294876, now seen corresponding path program 2 times [2021-11-19 14:55:57,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:57,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360552975] [2021-11-19 14:55:57,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:55:57,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:57,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:57,362 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:57,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:55:57,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:55:57,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:57,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:55:57,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:58,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:58,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:58,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360552975] [2021-11-19 14:55:58,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360552975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:58,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [876003870] [2021-11-19 14:55:58,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:55:58,845 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:55:58,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:55:58,846 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:55:58,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 14:55:59,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:55:59,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:59,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:55:59,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:56:00,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:56:00,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [876003870] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:00,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565790115] [2021-11-19 14:56:00,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:56:00,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:56:00,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:56:00,389 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:56:00,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_392ada3d-ae45-4e32-a756-906f2676f234/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-19 14:56:36,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:56:36,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:56:36,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:56:36,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:36,613 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:56:36,614 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 14 treesize of output 14 [2021-11-19 14:56:36,676 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 18 treesize of output 14 [2021-11-19 14:58:30,140 WARN L227 SmtUtils]: Spent 36.93s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:58:30,141 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 14:58:30,142 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 6 case distinctions, treesize of input 78 treesize of output 82 [2021-11-19 14:58:30,843 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:58:30,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 40 [2021-11-19 14:58:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:30,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:33,602 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 14:58:33,603 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 66 treesize of output 65 [2021-11-19 15:02:52,515 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 15:02:52,516 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 119 treesize of output 118 [2021-11-19 15:02:56,121 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (= |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) is different from false [2021-11-19 15:02:58,767 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) is different from false [2021-11-19 15:03:19,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-19 15:03:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 16 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:19,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565790115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:19,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:03:19,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 18, 18] total 53 [2021-11-19 15:03:19,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125195355] [2021-11-19 15:03:19,236 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:03:19,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-19 15:03:19,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-19 15:03:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2204, Unknown=150, NotChecked=198, Total=2756 [2021-11-19 15:03:19,239 INFO L87 Difference]: Start difference. First operand 1382 states and 1647 transitions. Second operand has 53 states, 51 states have (on average 4.96078431372549) internal successors, (253), 49 states have internal predecessors, (253), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-19 15:03:24,990 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-19 15:03:27,076 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (= |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-19 15:04:50,329 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ bv1 32)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))) (_ bv1 1))))) (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))) (_ bv1 1))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-19 15:04:52,360 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))))) (_ bv1 1))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= (_ bv2 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))) (_ bv1 1))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-19 15:04:54,422 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))) (_ bv1 1))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))) (_ bv1 1))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv3 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1|)) is different from false [2021-11-19 15:04:56,455 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv4 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))) (_ bv1 1))))) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))) (_ bv1 1)))))) is different from false [2021-11-19 15:04:58,474 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))) (_ bv1 1))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ bv5 32))) is different from false