./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF --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 d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:46:23,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:46:23,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:46:23,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:46:23,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:46:23,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:46:23,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:46:23,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:46:23,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:46:23,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:46:23,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:46:23,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:46:23,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:46:23,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:46:23,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:46:23,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:46:23,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:46:23,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:46:23,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:46:23,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:46:23,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:46:23,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:46:23,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:46:23,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:46:23,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:46:23,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:46:23,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:46:23,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:46:23,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:46:23,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:46:23,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:46:23,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:46:23,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:46:23,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:46:23,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:46:23,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:46:23,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:46:23,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:46:23,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:46:23,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:46:23,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:46:23,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:46:23,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:46:23,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:46:23,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:46:23,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:46:23,200 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:46:23,200 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:46:23,201 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:46:23,201 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:46:23,201 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:46:23,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:46:23,202 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:46:23,202 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:46:23,203 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:46:23,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:46:23,203 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:46:23,203 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:46:23,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:46:23,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:46:23,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:46:23,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:46:23,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:46:23,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:46:23,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:46:23,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:46:23,207 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:46:23,207 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:46:23,209 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:46:23,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:46:23,209 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:46:23,209 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:46:23,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:46:23,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:46:23,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:46:23,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:23,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:46:23,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:46:23,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:46:23,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:46:23,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:46:23,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:46:23,212 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_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d [2021-11-12 23:46:23,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:46:23,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:46:23,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:46:23,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:46:23,551 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:46:23,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-12 23:46:23,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/456ac9393/c3a0564adaa74147a1611291a6772ca9/FLAGbc13a4111 [2021-11-12 23:46:24,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:46:24,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-12 23:46:24,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/456ac9393/c3a0564adaa74147a1611291a6772ca9/FLAGbc13a4111 [2021-11-12 23:46:24,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/456ac9393/c3a0564adaa74147a1611291a6772ca9 [2021-11-12 23:46:24,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:46:24,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:46:24,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:24,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:46:24,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:46:24,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:24" (1/1) ... [2021-11-12 23:46:24,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b95a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:24, skipping insertion in model container [2021-11-12 23:46:24,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:24" (1/1) ... [2021-11-12 23:46:24,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:46:24,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:46:25,083 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-12 23:46:25,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-12 23:46:25,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:25,300 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) [2021-11-12 23:46:25,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@139b386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:25, skipping insertion in model container [2021-11-12 23:46:25,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:25,303 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:46:25,305 INFO L158 Benchmark]: Toolchain (without parser) took 848.41ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 59.8MB in the beginning and 87.4MB in the end (delta: -27.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:46:25,306 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 70.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:46:25,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 827.69ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 59.6MB in the beginning and 87.4MB in the end (delta: -27.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:46:25,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 70.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 827.69ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 59.6MB in the beginning and 87.4MB in the end (delta: -27.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF --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 d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:46:27,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:46:27,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:46:27,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:46:27,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:46:27,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:46:27,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:46:27,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:46:27,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:46:27,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:46:27,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:46:27,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:46:27,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:46:27,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:46:27,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:46:27,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:46:27,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:46:27,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:46:27,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:46:27,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:46:27,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:46:27,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:46:27,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:46:27,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:46:27,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:46:27,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:46:27,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:46:27,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:46:27,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:46:27,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:46:27,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:46:27,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:46:27,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:46:27,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:46:27,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:46:27,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:46:27,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:46:27,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:46:27,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:46:27,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:46:27,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:46:27,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:46:27,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:46:27,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:46:27,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:46:27,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:46:27,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:46:27,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:46:27,724 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:46:27,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:46:27,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:46:27,725 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:46:27,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:46:27,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:46:27,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:46:27,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:46:27,729 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:46:27,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:46:27,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:46:27,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:46:27,730 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:46:27,730 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:46:27,730 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:46:27,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:46:27,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:46:27,731 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:46:27,731 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:46:27,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:46:27,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:46:27,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:46:27,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:46:27,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:46:27,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:27,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:46:27,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:46:27,734 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:46:27,735 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:27,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:46:27,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:46:27,736 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_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d [2021-11-12 23:46:28,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:46:28,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:46:28,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:46:28,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:46:28,134 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:46:28,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-12 23:46:28,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/d750fcf32/23fd1fe97a5f49ceb46308cd74a1ae93/FLAG8c22c0e08 [2021-11-12 23:46:28,919 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:46:28,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-12 23:46:28,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/d750fcf32/23fd1fe97a5f49ceb46308cd74a1ae93/FLAG8c22c0e08 [2021-11-12 23:46:29,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/data/d750fcf32/23fd1fe97a5f49ceb46308cd74a1ae93 [2021-11-12 23:46:29,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:46:29,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:46:29,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:29,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:46:29,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:46:29,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:29" (1/1) ... [2021-11-12 23:46:29,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543144b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:29, skipping insertion in model container [2021-11-12 23:46:29,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:29" (1/1) ... [2021-11-12 23:46:29,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:46:29,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:46:29,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-12 23:46:29,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-12 23:46:29,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:29,957 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:46:29,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:46:29,990 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-12 23:46:30,050 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-12 23:46:30,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:30,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:46:30,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-12 23:46:30,128 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-12 23:46:30,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:30,181 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:46:30,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30 WrapperNode [2021-11-12 23:46:30,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:30,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:46:30,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:46:30,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:46:30,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:46:30,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:46:30,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:46:30,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:46:30,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:46:30,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:46:30,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:46:30,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:46:30,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (1/1) ... [2021-11-12 23:46:30,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:30,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:30,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:46:30,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:46:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:46:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:46:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:46:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:46:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:46:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:46:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:46:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:46:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:46:30,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:46:30,881 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:46:35,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:46:35,969 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-12 23:46:35,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:46:35 BoogieIcfgContainer [2021-11-12 23:46:35,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:46:35,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:46:35,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:46:35,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:46:35,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:46:29" (1/3) ... [2021-11-12 23:46:35,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78324147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:46:35, skipping insertion in model container [2021-11-12 23:46:35,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:30" (2/3) ... [2021-11-12 23:46:35,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78324147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:46:35, skipping insertion in model container [2021-11-12 23:46:35,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:46:35" (3/3) ... [2021-11-12 23:46:35,984 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-2.i [2021-11-12 23:46:35,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:46:35,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2021-11-12 23:46:36,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:46:36,060 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 [2021-11-12 23:46:36,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2021-11-12 23:46:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 1271 states, 624 states have (on average 2.2580128205128207) internal successors, (1409), 1265 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:46:36,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:36,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:46:36,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-12 23:46:36,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:36,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201158857] [2021-11-12 23:46:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:36,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:36,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:36,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:46:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:36,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:46:36,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:36,435 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 [2021-11-12 23:46:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:36,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:36,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:36,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201158857] [2021-11-12 23:46:36,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201158857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:36,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:36,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:46:36,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282511108] [2021-11-12 23:46:36,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:36,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:46:36,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:36,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:46:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:36,542 INFO L87 Difference]: Start difference. First operand has 1271 states, 624 states have (on average 2.2580128205128207) internal successors, (1409), 1265 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-12 23:46:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:38,908 INFO L93 Difference]: Finished difference Result 1443 states and 1528 transitions. [2021-11-12 23:46:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:38,910 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 [2021-11-12 23:46:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:38,933 INFO L225 Difference]: With dead ends: 1443 [2021-11-12 23:46:38,933 INFO L226 Difference]: Without dead ends: 1441 [2021-11-12 23:46:38,935 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 [2021-11-12 23:46:38,938 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1181 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1886.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.18ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2256.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:38,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 928 Invalid, 760 Unknown, 0 Unchecked, 18.18ms Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2256.26ms Time] [2021-11-12 23:46:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-11-12 23:46:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1256. [2021-11-12 23:46:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 624 states have (on average 2.110576923076923) internal successors, (1317), 1250 states have internal predecessors, (1317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1333 transitions. [2021-11-12 23:46:39,074 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1333 transitions. Word has length 3 [2021-11-12 23:46:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:39,075 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 1333 transitions. [2021-11-12 23:46:39,075 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) [2021-11-12 23:46:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1333 transitions. [2021-11-12 23:46:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:46:39,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:39,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:46:39,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:39,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:39,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:39,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:39,292 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-12 23:46:39,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:39,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944116201] [2021-11-12 23:46:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:39,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:39,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:39,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:39,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:46:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:39,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:39,446 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 [2021-11-12 23:46:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:39,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:39,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:39,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944116201] [2021-11-12 23:46:39,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944116201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:39,520 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:39,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:46:39,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333013436] [2021-11-12 23:46:39,522 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:39,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:39,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:39,525 INFO L87 Difference]: Start difference. First operand 1256 states and 1333 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) [2021-11-12 23:46:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:44,743 INFO L93 Difference]: Finished difference Result 1940 states and 2071 transitions. [2021-11-12 23:46:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:44,743 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 [2021-11-12 23:46:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:44,778 INFO L225 Difference]: With dead ends: 1940 [2021-11-12 23:46:44,779 INFO L226 Difference]: Without dead ends: 1940 [2021-11-12 23:46:44,779 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 [2021-11-12 23:46:44,780 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 2237 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4512.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.49ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5125.54ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:44,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2247 Valid, 1647 Invalid, 1099 Unknown, 0 Unchecked, 18.49ms Time], IncrementalHoareTripleChecker [23 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 5125.54ms Time] [2021-11-12 23:46:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2021-11-12 23:46:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1291. [2021-11-12 23:46:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 668 states have (on average 2.089820359281437) internal successors, (1396), 1285 states have internal predecessors, (1396), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1412 transitions. [2021-11-12 23:46:44,825 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1412 transitions. Word has length 3 [2021-11-12 23:46:44,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:44,825 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1412 transitions. [2021-11-12 23:46:44,825 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) [2021-11-12 23:46:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1412 transitions. [2021-11-12 23:46:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:46:44,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:44,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:44,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:46:45,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:45,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:45,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-12 23:46:45,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:45,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225013776] [2021-11-12 23:46:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:45,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:45,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:45,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:45,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:46:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:45,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:46:45,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:45,193 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 [2021-11-12 23:46:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:45,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:45,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:45,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225013776] [2021-11-12 23:46:45,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225013776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:45,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:45,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:46:45,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999282270] [2021-11-12 23:46:45,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:45,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:46:45,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:45,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:46:45,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:45,249 INFO L87 Difference]: Start difference. First operand 1291 states and 1412 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:47,564 INFO L93 Difference]: Finished difference Result 1619 states and 1765 transitions. [2021-11-12 23:46:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:47,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:46:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:47,578 INFO L225 Difference]: With dead ends: 1619 [2021-11-12 23:46:47,578 INFO L226 Difference]: Without dead ends: 1619 [2021-11-12 23:46:47,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:47,580 INFO L933 BasicCegarLoop]: 1165 mSDtfsCounter, 992 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1900.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.26ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2246.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:47,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1512 Invalid, 883 Unknown, 0 Unchecked, 7.26ms Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2246.51ms Time] [2021-11-12 23:46:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-11-12 23:46:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1242. [2021-11-12 23:46:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 668 states have (on average 2.0119760479041915) internal successors, (1344), 1236 states have internal predecessors, (1344), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1360 transitions. [2021-11-12 23:46:47,614 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1360 transitions. Word has length 8 [2021-11-12 23:46:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:47,615 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1360 transitions. [2021-11-12 23:46:47,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1360 transitions. [2021-11-12 23:46:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:46:47,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:47,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:47,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:46:47,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:47,827 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-12 23:46:47,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:47,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193826330] [2021-11-12 23:46:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:47,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:47,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:47,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:47,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:46:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:47,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:47,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:47,982 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 [2021-11-12 23:46:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:48,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:48,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:48,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193826330] [2021-11-12 23:46:48,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193826330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:48,095 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:48,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:46:48,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074062052] [2021-11-12 23:46:48,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:48,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:48,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:48,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:48,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:48,096 INFO L87 Difference]: Start difference. First operand 1242 states and 1360 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:53,535 INFO L93 Difference]: Finished difference Result 1662 states and 1772 transitions. [2021-11-12 23:46:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:46:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:53,545 INFO L225 Difference]: With dead ends: 1662 [2021-11-12 23:46:53,545 INFO L226 Difference]: Without dead ends: 1662 [2021-11-12 23:46:53,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:53,546 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 733 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4817.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.07ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5382.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:53,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 2373 Invalid, 1406 Unknown, 0 Unchecked, 12.07ms Time], IncrementalHoareTripleChecker [15 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 5382.07ms Time] [2021-11-12 23:46:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2021-11-12 23:46:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1232. [2021-11-12 23:46:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 668 states have (on average 1.9925149700598803) internal successors, (1331), 1226 states have internal predecessors, (1331), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1347 transitions. [2021-11-12 23:46:53,599 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1347 transitions. Word has length 8 [2021-11-12 23:46:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:53,599 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1347 transitions. [2021-11-12 23:46:53,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1347 transitions. [2021-11-12 23:46:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:46:53,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:53,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:53,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:53,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:53,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-12 23:46:53,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:53,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898719133] [2021-11-12 23:46:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:53,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:53,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:53,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:53,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:46:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:53,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:46:53,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:54,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:54,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:54,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898719133] [2021-11-12 23:46:54,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898719133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:54,123 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:54,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:46:54,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867017163] [2021-11-12 23:46:54,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:54,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:54,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:54,125 INFO L87 Difference]: Start difference. First operand 1232 states and 1347 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) [2021-11-12 23:46:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:55,080 INFO L93 Difference]: Finished difference Result 1874 states and 2031 transitions. [2021-11-12 23:46:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:46:55,081 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 [2021-11-12 23:46:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:55,095 INFO L225 Difference]: With dead ends: 1874 [2021-11-12 23:46:55,095 INFO L226 Difference]: Without dead ends: 1874 [2021-11-12 23:46:55,095 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 [2021-11-12 23:46:55,098 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 753 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 779.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.12ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 908.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:55,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 3745 Invalid, 373 Unknown, 0 Unchecked, 8.12ms Time], IncrementalHoareTripleChecker [16 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 908.48ms Time] [2021-11-12 23:46:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-11-12 23:46:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1472. [2021-11-12 23:46:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 908 states have (on average 1.9658590308370043) internal successors, (1785), 1466 states have internal predecessors, (1785), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1801 transitions. [2021-11-12 23:46:55,156 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1801 transitions. Word has length 11 [2021-11-12 23:46:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:55,156 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1801 transitions. [2021-11-12 23:46:55,157 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) [2021-11-12 23:46:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1801 transitions. [2021-11-12 23:46:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:46:55,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:55,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:55,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:55,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:55,369 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:55,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-12 23:46:55,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:55,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139244221] [2021-11-12 23:46:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:55,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:55,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:55,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:55,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:46:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:55,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:46:55,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:55,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:55,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:55,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139244221] [2021-11-12 23:46:55,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139244221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:55,578 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:55,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:46:55,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343266389] [2021-11-12 23:46:55,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:55,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:55,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:55,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:55,580 INFO L87 Difference]: Start difference. First operand 1472 states and 1801 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-12 23:46:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:55,621 INFO L93 Difference]: Finished difference Result 1653 states and 1979 transitions. [2021-11-12 23:46:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:46:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:55,631 INFO L225 Difference]: With dead ends: 1653 [2021-11-12 23:46:55,631 INFO L226 Difference]: Without dead ends: 1653 [2021-11-12 23:46:55,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:55,632 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 602 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:55,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 2929 Invalid, 14 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 20.56ms Time] [2021-11-12 23:46:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-12 23:46:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1412. [2021-11-12 23:46:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 872 states have (on average 1.948394495412844) internal successors, (1699), 1406 states have internal predecessors, (1699), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1715 transitions. [2021-11-12 23:46:55,670 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1715 transitions. Word has length 13 [2021-11-12 23:46:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:55,670 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1715 transitions. [2021-11-12 23:46:55,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-12 23:46:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1715 transitions. [2021-11-12 23:46:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:46:55,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:55,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:55,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:46:55,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:55,883 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-12 23:46:55,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:55,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470795613] [2021-11-12 23:46:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:55,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:55,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:55,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:46:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:56,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:56,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:56,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:56,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:56,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470795613] [2021-11-12 23:46:56,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470795613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:56,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:56,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:46:56,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170025640] [2021-11-12 23:46:56,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:56,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:46:56,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:56,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:46:56,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:46:56,095 INFO L87 Difference]: Start difference. First operand 1412 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:56,182 INFO L93 Difference]: Finished difference Result 1625 states and 1923 transitions. [2021-11-12 23:46:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:56,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:46:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:56,191 INFO L225 Difference]: With dead ends: 1625 [2021-11-12 23:46:56,192 INFO L226 Difference]: Without dead ends: 1625 [2021-11-12 23:46:56,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:46:56,193 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 573 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:56,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 4055 Invalid, 67 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 58.02ms Time] [2021-11-12 23:46:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-11-12 23:46:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1382. [2021-11-12 23:46:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 856 states have (on average 1.9170560747663552) internal successors, (1641), 1376 states have internal predecessors, (1641), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1657 transitions. [2021-11-12 23:46:56,229 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1657 transitions. Word has length 15 [2021-11-12 23:46:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:56,229 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1657 transitions. [2021-11-12 23:46:56,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1657 transitions. [2021-11-12 23:46:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:46:56,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:56,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:56,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:56,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:56,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash 552252916, now seen corresponding path program 1 times [2021-11-12 23:46:56,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:56,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288248729] [2021-11-12 23:46:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:56,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:56,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:56,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:56,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:46:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:56,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:56,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:56,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:46:56,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:46:56,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:46:56,720 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:46:56,720 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 [2021-11-12 23:46:56,788 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:46:56,789 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 [2021-11-12 23:46:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:56,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:56,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:56,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288248729] [2021-11-12 23:46:56,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288248729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:56,916 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:56,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:46:56,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501328992] [2021-11-12 23:46:56,917 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:56,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:46:56,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:46:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:46:56,918 INFO L87 Difference]: Start difference. First operand 1382 states and 1657 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:59,010 INFO L93 Difference]: Finished difference Result 1836 states and 2181 transitions. [2021-11-12 23:46:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:46:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:59,017 INFO L225 Difference]: With dead ends: 1836 [2021-11-12 23:46:59,018 INFO L226 Difference]: Without dead ends: 1836 [2021-11-12 23:46:59,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:46:59,019 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 443 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1786.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 5477 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2030.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:59,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 5477 Invalid, 441 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [2 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 2030.47ms Time] [2021-11-12 23:46:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-11-12 23:46:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1381. [2021-11-12 23:46:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 855 states have (on average 1.9169590643274854) internal successors, (1639), 1375 states have internal predecessors, (1639), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1655 transitions. [2021-11-12 23:46:59,054 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1655 transitions. Word has length 16 [2021-11-12 23:46:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:59,054 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1655 transitions. [2021-11-12 23:46:59,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1655 transitions. [2021-11-12 23:46:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:46:59,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:59,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:59,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 23:46:59,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:59,268 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:59,269 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-12 23:46:59,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:59,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420020152] [2021-11-12 23:46:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:59,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:59,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:59,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:46:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:59,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:46:59,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:59,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:59,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:59,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420020152] [2021-11-12 23:46:59,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420020152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:59,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:59,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:46:59,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024471809] [2021-11-12 23:46:59,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:59,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:59,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:59,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:59,499 INFO L87 Difference]: Start difference. First operand 1381 states and 1655 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:59,551 INFO L93 Difference]: Finished difference Result 1321 states and 1569 transitions. [2021-11-12 23:46:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:59,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 23:46:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:59,558 INFO L225 Difference]: With dead ends: 1321 [2021-11-12 23:46:59,559 INFO L226 Difference]: Without dead ends: 1321 [2021-11-12 23:46:59,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:59,560 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 2216 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:59,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 1171 Invalid, 21 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 33.78ms Time] [2021-11-12 23:46:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-11-12 23:46:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1321. [2021-11-12 23:46:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 819 states have (on average 1.8962148962148961) internal successors, (1553), 1315 states have internal predecessors, (1553), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:46:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1569 transitions. [2021-11-12 23:46:59,596 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1569 transitions. Word has length 18 [2021-11-12 23:46:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:59,597 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 1569 transitions. [2021-11-12 23:46:59,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1569 transitions. [2021-11-12 23:46:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:46:59,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:59,598 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] [2021-11-12 23:46:59,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:59,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:59,810 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:46:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-12 23:46:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:59,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351428720] [2021-11-12 23:46:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:59,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:59,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:59,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:46:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:59,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:59,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:00,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:00,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351428720] [2021-11-12 23:47:00,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351428720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:00,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:00,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:47:00,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523260358] [2021-11-12 23:47:00,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:00,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:00,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:47:00,025 INFO L87 Difference]: Start difference. First operand 1321 states and 1569 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:00,093 INFO L93 Difference]: Finished difference Result 1293 states and 1513 transitions. [2021-11-12 23:47:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:47:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 23:47:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:00,109 INFO L225 Difference]: With dead ends: 1293 [2021-11-12 23:47:00,109 INFO L226 Difference]: Without dead ends: 1293 [2021-11-12 23:47:00,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:47:00,110 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 1079 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:00,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2245 Invalid, 67 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 47.57ms Time] [2021-11-12 23:47:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-11-12 23:47:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2021-11-12 23:47:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 803 states have (on average 1.8617683686176836) internal successors, (1495), 1285 states have internal predecessors, (1495), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1511 transitions. [2021-11-12 23:47:00,137 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1511 transitions. Word has length 20 [2021-11-12 23:47:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:00,138 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1511 transitions. [2021-11-12 23:47:00,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1511 transitions. [2021-11-12 23:47:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:47:00,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:00,140 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] [2021-11-12 23:47:00,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:00,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:00,351 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-12 23:47:00,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:00,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161092903] [2021-11-12 23:47:00,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:00,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:00,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:00,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:47:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:00,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:00,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:00,503 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 [2021-11-12 23:47:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:00,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:00,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:00,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161092903] [2021-11-12 23:47:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161092903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:00,718 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:00,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:47:00,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15138809] [2021-11-12 23:47:00,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:00,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:47:00,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:47:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:00,719 INFO L87 Difference]: Start difference. First operand 1291 states and 1511 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 23:47:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:03,160 INFO L93 Difference]: Finished difference Result 1892 states and 2245 transitions. [2021-11-12 23:47:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:47:03,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 23:47:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:03,172 INFO L225 Difference]: With dead ends: 1892 [2021-11-12 23:47:03,172 INFO L226 Difference]: Without dead ends: 1892 [2021-11-12 23:47:03,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:47:03,173 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1773 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2019.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.75ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2393.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:03,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 1276 Invalid, 1173 Unknown, 0 Unchecked, 7.75ms Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2393.25ms Time] [2021-11-12 23:47:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-11-12 23:47:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1287. [2021-11-12 23:47:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 803 states have (on average 1.8518057285180574) internal successors, (1487), 1281 states have internal predecessors, (1487), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1503 transitions. [2021-11-12 23:47:03,204 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1503 transitions. Word has length 34 [2021-11-12 23:47:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:03,204 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1503 transitions. [2021-11-12 23:47:03,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 23:47:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1503 transitions. [2021-11-12 23:47:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:47:03,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:03,206 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] [2021-11-12 23:47:03,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:47:03,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:03,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:03,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-12 23:47:03,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:03,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904374610] [2021-11-12 23:47:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:03,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:03,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:03,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:03,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:47:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:03,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:03,610 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 [2021-11-12 23:47:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:03,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:04,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:04,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904374610] [2021-11-12 23:47:04,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904374610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:04,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:04,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:47:04,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324034920] [2021-11-12 23:47:04,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:04,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:47:04,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:47:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:47:04,357 INFO L87 Difference]: Start difference. First operand 1287 states and 1503 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 23:47:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:12,369 INFO L93 Difference]: Finished difference Result 2017 states and 2347 transitions. [2021-11-12 23:47:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:47:12,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 23:47:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:12,377 INFO L225 Difference]: With dead ends: 2017 [2021-11-12 23:47:12,378 INFO L226 Difference]: Without dead ends: 2017 [2021-11-12 23:47:12,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:47:12,379 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 1835 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6954.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.73ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7828.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:12,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 3032 Invalid, 2012 Unknown, 0 Unchecked, 14.73ms Time], IncrementalHoareTripleChecker [21 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 7828.49ms Time] [2021-11-12 23:47:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2021-11-12 23:47:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1283. [2021-11-12 23:47:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 803 states have (on average 1.841843088418431) internal successors, (1479), 1277 states have internal predecessors, (1479), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1495 transitions. [2021-11-12 23:47:12,407 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1495 transitions. Word has length 34 [2021-11-12 23:47:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:12,407 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1495 transitions. [2021-11-12 23:47:12,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 23:47:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1495 transitions. [2021-11-12 23:47:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:47:12,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:12,409 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] [2021-11-12 23:47:12,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 23:47:12,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:12,621 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-12 23:47:12,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:12,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017240915] [2021-11-12 23:47:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:12,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:12,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:12,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:12,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:47:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:12,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:12,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:13,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:13,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017240915] [2021-11-12 23:47:13,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017240915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:13,062 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:13,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:47:13,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419137270] [2021-11-12 23:47:13,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:13,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:47:13,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:47:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:13,066 INFO L87 Difference]: Start difference. First operand 1283 states and 1495 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:13,124 INFO L93 Difference]: Finished difference Result 1271 states and 1475 transitions. [2021-11-12 23:47:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:47:13,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-12 23:47:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:13,132 INFO L225 Difference]: With dead ends: 1271 [2021-11-12 23:47:13,132 INFO L226 Difference]: Without dead ends: 1271 [2021-11-12 23:47:13,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:47:13,135 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 1055 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:13,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 2191 Invalid, 43 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 37.16ms Time] [2021-11-12 23:47:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-11-12 23:47:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1271. [2021-11-12 23:47:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 791 states have (on average 1.8445006321112516) internal successors, (1459), 1265 states have internal predecessors, (1459), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1475 transitions. [2021-11-12 23:47:13,162 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1475 transitions. Word has length 52 [2021-11-12 23:47:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:13,163 INFO L470 AbstractCegarLoop]: Abstraction has 1271 states and 1475 transitions. [2021-11-12 23:47:13,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1475 transitions. [2021-11-12 23:47:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 23:47:13,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:13,168 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] [2021-11-12 23:47:13,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:13,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:13,381 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-12 23:47:13,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:13,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959589915] [2021-11-12 23:47:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:13,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:13,385 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:13,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:47:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:13,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:47:13,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:13,767 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 [2021-11-12 23:47:13,773 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 [2021-11-12 23:47:14,429 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:47:14,430 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 25 treesize of output 27 [2021-11-12 23:47:14,449 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:47:14,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-12 23:47:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:14,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:21,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:21,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959589915] [2021-11-12 23:47:21,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959589915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:21,334 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:21,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:47:21,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296102224] [2021-11-12 23:47:21,334 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:21,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:47:21,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:47:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:47:21,336 INFO L87 Difference]: Start difference. First operand 1271 states and 1475 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 23:47:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:26,370 INFO L93 Difference]: Finished difference Result 1818 states and 2112 transitions. [2021-11-12 23:47:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:47:26,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 60 [2021-11-12 23:47:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:26,378 INFO L225 Difference]: With dead ends: 1818 [2021-11-12 23:47:26,378 INFO L226 Difference]: Without dead ends: 1818 [2021-11-12 23:47:26,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:47:26,379 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1516 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4243.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.55ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1595 IncrementalHoareTripleChecker+Unchecked, 4945.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:26,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 2113 Invalid, 2966 Unknown, 0 Unchecked, 14.55ms Time], IncrementalHoareTripleChecker [58 Valid, 1313 Invalid, 0 Unknown, 1595 Unchecked, 4945.58ms Time] [2021-11-12 23:47:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-11-12 23:47:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1249. [2021-11-12 23:47:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 801 states have (on average 1.8039950062421972) internal successors, (1445), 1243 states have internal predecessors, (1445), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1461 transitions. [2021-11-12 23:47:26,404 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1461 transitions. Word has length 60 [2021-11-12 23:47:26,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:26,404 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1461 transitions. [2021-11-12 23:47:26,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 23:47:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1461 transitions. [2021-11-12 23:47:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:47:26,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:26,406 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] [2021-11-12 23:47:26,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 23:47:26,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:26,644 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-12 23:47:26,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:26,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639987240] [2021-11-12 23:47:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:26,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:26,647 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:26,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:47:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:26,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:26,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:27,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:27,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:47:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:27,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:27,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639987240] [2021-11-12 23:47:27,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639987240] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:27,518 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:27,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:47:27,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449800689] [2021-11-12 23:47:27,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:27,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:47:27,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:47:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:47:27,520 INFO L87 Difference]: Start difference. First operand 1249 states and 1461 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:29,770 INFO L93 Difference]: Finished difference Result 1247 states and 1459 transitions. [2021-11-12 23:47:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:47:29,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-12 23:47:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:29,778 INFO L225 Difference]: With dead ends: 1247 [2021-11-12 23:47:29,778 INFO L226 Difference]: Without dead ends: 1247 [2021-11-12 23:47:29,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:47:29,779 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 812 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1918.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2222.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:29,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1073 Invalid, 558 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [16 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 2222.39ms Time] [2021-11-12 23:47:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-12 23:47:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2021-11-12 23:47:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 801 states have (on average 1.801498127340824) internal successors, (1443), 1241 states have internal predecessors, (1443), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1459 transitions. [2021-11-12 23:47:29,801 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1459 transitions. Word has length 62 [2021-11-12 23:47:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:29,801 INFO L470 AbstractCegarLoop]: Abstraction has 1247 states and 1459 transitions. [2021-11-12 23:47:29,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1459 transitions. [2021-11-12 23:47:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:47:29,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:29,803 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] [2021-11-12 23:47:29,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 23:47:30,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:30,016 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-12 23:47:30,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:30,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894238306] [2021-11-12 23:47:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:30,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:30,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:30,019 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:30,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:47:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:30,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:47:30,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:30,312 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 [2021-11-12 23:47:30,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 23:47:30,365 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 25 treesize of output 13 [2021-11-12 23:47:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:30,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:30,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:30,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894238306] [2021-11-12 23:47:30,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894238306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:30,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:30,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:47:30,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664712694] [2021-11-12 23:47:30,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:30,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:30,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:47:30,500 INFO L87 Difference]: Start difference. First operand 1247 states and 1459 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 23:47:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:33,756 INFO L93 Difference]: Finished difference Result 1246 states and 1458 transitions. [2021-11-12 23:47:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:47:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-12 23:47:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:33,763 INFO L225 Difference]: With dead ends: 1246 [2021-11-12 23:47:33,764 INFO L226 Difference]: Without dead ends: 1246 [2021-11-12 23:47:33,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:47:33,765 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 4 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2752.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3193.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:33,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2704 Invalid, 1510 Unknown, 0 Unchecked, 8.57ms Time], IncrementalHoareTripleChecker [1 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 3193.74ms Time] [2021-11-12 23:47:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-11-12 23:47:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1246. [2021-11-12 23:47:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 801 states have (on average 1.8002496878901373) internal successors, (1442), 1240 states have internal predecessors, (1442), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1458 transitions. [2021-11-12 23:47:33,787 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1458 transitions. Word has length 65 [2021-11-12 23:47:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:33,787 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1458 transitions. [2021-11-12 23:47:33,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 23:47:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1458 transitions. [2021-11-12 23:47:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:47:33,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:33,789 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] [2021-11-12 23:47:33,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-12 23:47:34,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:34,018 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:34,018 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-12 23:47:34,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:34,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369794981] [2021-11-12 23:47:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:34,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:34,021 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:34,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:47:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:34,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:47:34,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:34,411 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 [2021-11-12 23:47:34,437 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 [2021-11-12 23:47:34,448 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 [2021-11-12 23:47:34,525 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 [2021-11-12 23:47:34,531 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 [2021-11-12 23:47:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:34,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:34,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:34,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369794981] [2021-11-12 23:47:34,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369794981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:34,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:34,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:47:34,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280092909] [2021-11-12 23:47:34,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:34,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:47:34,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:47:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:47:34,941 INFO L87 Difference]: Start difference. First operand 1246 states and 1458 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-12 23:47:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:44,161 INFO L93 Difference]: Finished difference Result 1245 states and 1457 transitions. [2021-11-12 23:47:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:47:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 65 [2021-11-12 23:47:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:44,167 INFO L225 Difference]: With dead ends: 1245 [2021-11-12 23:47:44,168 INFO L226 Difference]: Without dead ends: 1245 [2021-11-12 23:47:44,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:47:44,169 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 4 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8179.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9115.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:44,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3314 Invalid, 1951 Unknown, 0 Unchecked, 13.03ms Time], IncrementalHoareTripleChecker [1 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 9115.98ms Time] [2021-11-12 23:47:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-12 23:47:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1245. [2021-11-12 23:47:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 800 states have (on average 1.80125) internal successors, (1441), 1239 states have internal predecessors, (1441), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:47:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1457 transitions. [2021-11-12 23:47:44,190 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1457 transitions. Word has length 65 [2021-11-12 23:47:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:44,190 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1457 transitions. [2021-11-12 23:47:44,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-12 23:47:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1457 transitions. [2021-11-12 23:47:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 23:47:44,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:44,192 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] [2021-11-12 23:47:44,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:44,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:44,406 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash 231575279, now seen corresponding path program 1 times [2021-11-12 23:47:44,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:44,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243369839] [2021-11-12 23:47:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:44,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:44,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:44,408 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:44,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:47:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:44,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:44,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:44,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:44,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:44,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243369839] [2021-11-12 23:47:44,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243369839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:44,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:44,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:47:44,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106400588] [2021-11-12 23:47:44,928 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:44,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:47:44,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:47:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:47:44,930 INFO L87 Difference]: Start difference. First operand 1245 states and 1457 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:47:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:45,056 INFO L93 Difference]: Finished difference Result 1255 states and 1470 transitions. [2021-11-12 23:47:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:47:45,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-12 23:47:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:45,063 INFO L225 Difference]: With dead ends: 1255 [2021-11-12 23:47:45,063 INFO L226 Difference]: Without dead ends: 1255 [2021-11-12 23:47:45,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:47:45,064 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 11 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:45,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3150 Invalid, 37 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 84.62ms Time] [2021-11-12 23:47:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-12 23:47:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-11-12 23:47:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 808 states have (on average 1.7982673267326732) internal successors, (1453), 1248 states have internal predecessors, (1453), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-12 23:47:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1470 transitions. [2021-11-12 23:47:45,089 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1470 transitions. Word has length 73 [2021-11-12 23:47:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:45,090 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1470 transitions. [2021-11-12 23:47:45,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:47:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1470 transitions. [2021-11-12 23:47:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:47:45,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:45,091 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] [2021-11-12 23:47:45,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:45,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:45,305 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash 620618639, now seen corresponding path program 1 times [2021-11-12 23:47:45,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:45,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773315654] [2021-11-12 23:47:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:45,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:45,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:45,308 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:45,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:47:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:45,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:45,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:45,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:46,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:46,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773315654] [2021-11-12 23:47:46,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773315654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:46,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [632220467] [2021-11-12 23:47:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:46,017 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:46,019 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:46,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:47:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:46,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:46,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:46,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:46,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [632220467] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:46,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107828851] [2021-11-12 23:47:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:46,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:46,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:47:46,679 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:47:46,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-12 23:47:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:46,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:47:46,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:47,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:47,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107828851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:47,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:47:47,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:47:47,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868501008] [2021-11-12 23:47:47,264 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:47:47,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:47:47,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:47:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:47:47,266 INFO L87 Difference]: Start difference. First operand 1255 states and 1470 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:47:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:47,784 INFO L93 Difference]: Finished difference Result 1269 states and 1487 transitions. [2021-11-12 23:47:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:47:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-12 23:47:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:47,789 INFO L225 Difference]: With dead ends: 1269 [2021-11-12 23:47:47,789 INFO L226 Difference]: Without dead ends: 1263 [2021-11-12 23:47:47,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:47:47,790 INFO L933 BasicCegarLoop]: 1053 mSDtfsCounter, 41 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 232.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:47,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 4210 Invalid, 143 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [28 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 232.18ms Time] [2021-11-12 23:47:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2021-11-12 23:47:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1261. [2021-11-12 23:47:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 814 states have (on average 1.7936117936117937) internal successors, (1460), 1254 states have internal predecessors, (1460), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-12 23:47:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1477 transitions. [2021-11-12 23:47:47,814 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1477 transitions. Word has length 75 [2021-11-12 23:47:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:47,832 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1477 transitions. [2021-11-12 23:47:47,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:47:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1477 transitions. [2021-11-12 23:47:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:47:47,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:47,833 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] [2021-11-12 23:47:47,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:48,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:48,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:48,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:48,448 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:47:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash -652176177, now seen corresponding path program 2 times [2021-11-12 23:47:48,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:48,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907581127] [2021-11-12 23:47:48,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:47:48,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:48,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:48,450 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:48,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:47:48,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:47:48,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:47:48,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:47:48,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:49,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:49,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:49,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907581127] [2021-11-12 23:47:49,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907581127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:49,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [817852869] [2021-11-12 23:47:49,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:47:49,612 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:49,613 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:49,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-12 23:47:50,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:47:50,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:47:50,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:47:50,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:50,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [817852869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:50,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385937942] [2021-11-12 23:47:50,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:47:50,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:47:50,742 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:47:50,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-12 23:48:38,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:48:38,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:48:38,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:48:38,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:38,379 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:48:38,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-12 23:48:38,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:48:38,456 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 [2021-11-12 23:48:38,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-12 23:48:38,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-12 23:48:38,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-12 23:51:04,921 WARN L227 SmtUtils]: Spent 38.16s 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) [2021-11-12 23:51:04,922 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-12 23:51:04,922 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 143 treesize of output 135 [2021-11-12 23:51:20,685 WARN L227 SmtUtils]: Spent 15.74s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:51:20,686 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-12 23:51:20,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-12 23:51:28,347 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:51:28,348 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 241 treesize of output 118 [2021-11-12 23:51:28,370 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:51:28,371 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 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-12 23:51:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:40,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:01,483 WARN L227 SmtUtils]: Spent 20.53s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:53:24,091 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse11 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11))))) (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32))) (let ((.cse12 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse12) (bvadd (_ bv20 32) .cse12))))))) is different from true [2021-11-12 23:53:27,923 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd .cse10 (_ bv16 32)) (bvadd .cse10 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))))) is different from true [2021-11-12 23:53:32,599 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16)))))))) is different from true [2021-11-12 23:54:52,997 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from false [2021-11-12 23:54:55,010 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from true [2021-11-12 23:55:03,144 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr281_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr281_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr281_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr281_103|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd (_ bv20 32) .cse8))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|)) (.cse12 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9)) (.cse13 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse14 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5)) (.cse15 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse16 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr281| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse18 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr281|) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse19) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse19))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from false [2021-11-12 23:55:35,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-12 23:55:35,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:55:35,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-12 23:55:35,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778000985] [2021-11-12 23:55:35,953 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-12 23:55:35,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:55:35,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:55:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1081, Unknown=102, NotChecked=370, Total=1722 [2021-11-12 23:55:35,955 INFO L87 Difference]: Start difference. First operand 1261 states and 1477 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:56:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:12,757 INFO L93 Difference]: Finished difference Result 1287 states and 1513 transitions. [2021-11-12 23:56:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-12 23:56:12,759 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-12 23:56:12,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:12,765 INFO L225 Difference]: With dead ends: 1287 [2021-11-12 23:56:12,765 INFO L226 Difference]: Without dead ends: 1283 [2021-11-12 23:56:12,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 336.4s TimeCoverageRelationStatistics Valid=510, Invalid=2477, Unknown=113, NotChecked=560, Total=3660 [2021-11-12 23:56:12,768 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 74 mSDsluCounter, 7375 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 784.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 8432 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.71ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 870.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:12,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 8432 Invalid, 344 Unknown, 0 Unchecked, 11.71ms Time], IncrementalHoareTripleChecker [58 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 870.66ms Time] [2021-11-12 23:56:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-12 23:56:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1273. [2021-11-12 23:56:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 826 states have (on average 1.7869249394673123) internal successors, (1476), 1266 states have internal predecessors, (1476), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-12 23:56:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1493 transitions. [2021-11-12 23:56:12,818 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1493 transitions. Word has length 79 [2021-11-12 23:56:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:12,819 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1493 transitions. [2021-11-12 23:56:12,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:56:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1493 transitions. [2021-11-12 23:56:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:56:12,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:12,822 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:12,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:13,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:13,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:13,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:13,431 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-12 23:56:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1107695439, now seen corresponding path program 3 times [2021-11-12 23:56:13,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:13,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772296561] [2021-11-12 23:56:13,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:56:13,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:13,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:13,434 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:13,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:56:14,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:56:14,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:56:14,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:56:14,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:56:14,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:56:17,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:17,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772296561] [2021-11-12 23:56:17,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772296561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:56:17,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1843391320] [2021-11-12 23:56:17,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:56:17,160 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:17,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:56:17,161 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:56:17,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-12 23:56:19,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:56:19,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:56:19,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:56:19,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:56:19,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:56:20,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1843391320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:56:20,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291844058] [2021-11-12 23:56:20,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:56:20,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:56:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:56:20,556 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:56:20,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23c6c8-5288-490d-a695-bef4f7be4b41/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process