./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:48,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:48,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:48,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:48,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:48,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:48,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:48,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:48,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:48,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:48,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:48,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:48,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:48,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:48,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:48,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:48,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:48,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:48,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:48,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:48,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:48,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:48,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:48,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:48,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:48,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:48,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:48,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:48,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:48,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:48,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:48,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:48,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:48,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:48,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:48,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:48,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:48,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:48,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:48,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:48,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:48,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 15:01:48,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:48,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:48,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:48,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:48,230 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:48,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:48,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:48,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:01:48,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:48,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:48,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:01:48,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:01:48,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:48,234 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:01:48,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:01:48,235 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:01:48,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 15:01:48,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 15:01:48,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:48,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:48,237 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:01:48,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:01:48,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:48,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:48,239 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 15:01:48,239 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 15:01:48,239 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 15:01:48,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:48,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:48,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:48,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:48,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:48,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:48,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:48,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:48,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:48,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:01:48,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:01:48,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:48,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:48,243 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_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2021-11-19 15:01:48,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:48,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:48,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:48,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:48,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:48,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-19 15:01:48,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/21ed26b06/1b8ad3bb98a94a6999fff35a58286e77/FLAG34cc91dd7 [2021-11-19 15:01:49,215 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:49,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-19 15:01:49,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/21ed26b06/1b8ad3bb98a94a6999fff35a58286e77/FLAG34cc91dd7 [2021-11-19 15:01:49,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/21ed26b06/1b8ad3bb98a94a6999fff35a58286e77 [2021-11-19 15:01:49,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:49,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:49,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:49,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:49,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:49,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:49" (1/1) ... [2021-11-19 15:01:49,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c10965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:49, skipping insertion in model container [2021-11-19 15:01:49,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:49" (1/1) ... [2021-11-19 15:01:49,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:49,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:49,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-19 15:01:50,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-19 15:01:50,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-19 15:01:50,185 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:50,202 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:01:50,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a1b4f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:50, skipping insertion in model container [2021-11-19 15:01:50,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:50,205 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:01:50,207 INFO L158 Benchmark]: Toolchain (without parser) took 727.87ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 95.4MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:01:50,207 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory was 102.8MB in the beginning and 102.8MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:01:50,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.50ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 95.4MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:01:50,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory was 102.8MB in the beginning and 102.8MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.50ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 95.4MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:52,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:52,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:52,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:52,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:52,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:52,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:52,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:52,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:52,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:52,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:52,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:52,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:52,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:52,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:52,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:52,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:52,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:52,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:52,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:52,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:52,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:52,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:52,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:52,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:52,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:52,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:52,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:52,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:52,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:52,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:52,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:52,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:52,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:52,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:52,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:52,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:52,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:52,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:52,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:52,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:52,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 15:01:52,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:52,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:52,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:52,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:52,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:52,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:52,671 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:52,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:52,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:52,672 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:52,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 15:01:52,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 15:01:52,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:52,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:52,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:01:52,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:01:52,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:52,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:52,676 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 15:01:52,676 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 15:01:52,676 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 15:01:52,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:52,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:52,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:01:52,677 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:01:52,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:52,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:52,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:52,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:01:52,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:52,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:52,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:52,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:52,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:01:52,679 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:52,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:52,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:52,680 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_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2021-11-19 15:01:53,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:53,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:53,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:53,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:53,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:53,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-19 15:01:53,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/df622c7a3/4dc4da90dd804ee7818bc675a8a3c7f2/FLAG479bf8d08 [2021-11-19 15:01:53,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:53,909 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-19 15:01:53,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/df622c7a3/4dc4da90dd804ee7818bc675a8a3c7f2/FLAG479bf8d08 [2021-11-19 15:01:54,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/data/df622c7a3/4dc4da90dd804ee7818bc675a8a3c7f2 [2021-11-19 15:01:54,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:54,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:54,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:54,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:54,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:54,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:54" (1/1) ... [2021-11-19 15:01:54,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41beb20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:54, skipping insertion in model container [2021-11-19 15:01:54,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:54" (1/1) ... [2021-11-19 15:01:54,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:54,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:54,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-19 15:01:54,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-19 15:01:54,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-19 15:01:54,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:54,902 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:01:54,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:54,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-19 15:01:55,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-19 15:01:55,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-19 15:01:55,054 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:55,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:01:55,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-19 15:01:55,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-19 15:01:55,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-19 15:01:55,208 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:55,269 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:01:55,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55 WrapperNode [2021-11-19 15:01:55,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:55,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:55,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:01:55,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:01:55,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,433 INFO L137 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1011 [2021-11-19 15:01:55,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:55,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:01:55,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:01:55,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:01:55,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:01:55,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:01:55,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:01:55,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:01:55,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (1/1) ... [2021-11-19 15:01:55,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:55,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:01:55,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:01:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:01:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:01:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:01:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:01:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:01:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:01:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:01:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:01:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:01:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:01:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:01:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:01:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:01:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:01:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:01:55,966 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:01:55,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:01:55,973 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 15:02:01,848 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:02:01,866 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:02:01,867 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-19 15:02:01,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:02:01 BoogieIcfgContainer [2021-11-19 15:02:01,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:02:01,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:02:01,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:02:01,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:02:01,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:01:54" (1/3) ... [2021-11-19 15:02:01,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcdfff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:02:01, skipping insertion in model container [2021-11-19 15:02:01,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:55" (2/3) ... [2021-11-19 15:02:01,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcdfff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:02:01, skipping insertion in model container [2021-11-19 15:02:01,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:02:01" (3/3) ... [2021-11-19 15:02:01,880 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-1.i [2021-11-19 15:02:01,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:02:01,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2021-11-19 15:02:01,937 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:02:01,944 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:02:01,945 INFO L340 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2021-11-19 15:02:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:02:02,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:02,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:02:02,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:02,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:02,015 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 15:02:02,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:02,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133185456] [2021-11-19 15:02:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:02,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:02,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:02,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:02,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:02:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:02,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:02:02,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:02,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:02,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:02,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:02,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133185456] [2021-11-19 15:02:02,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133185456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:02,359 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:02,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:02:02,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342399699] [2021-11-19 15:02:02,362 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:02:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:02:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:02:02,405 INFO L87 Difference]: Start difference. First operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:04,941 INFO L93 Difference]: Finished difference Result 1041 states and 1096 transitions. [2021-11-19 15:02:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:02:04,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 15:02:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:04,967 INFO L225 Difference]: With dead ends: 1041 [2021-11-19 15:02:04,967 INFO L226 Difference]: Without dead ends: 1039 [2021-11-19 15:02:04,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:02:04,974 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 969 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:04,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 670 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:02:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2021-11-19 15:02:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1031. [2021-11-19 15:02:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 516 states have (on average 2.0949612403100777) internal successors, (1081), 1026 states have internal predecessors, (1081), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1087 transitions. [2021-11-19 15:02:05,085 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1087 transitions. Word has length 3 [2021-11-19 15:02:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:05,086 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1087 transitions. [2021-11-19 15:02:05,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1087 transitions. [2021-11-19 15:02:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:02:05,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:05,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:02:05,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:02:05,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:05,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 15:02:05,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:05,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188546054] [2021-11-19 15:02:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:05,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:05,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:05,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:05,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:02:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:05,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:05,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:05,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:05,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:05,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:05,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188546054] [2021-11-19 15:02:05,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188546054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:05,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:05,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 15:02:05,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028381929] [2021-11-19 15:02:05,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:05,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:05,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:05,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:05,556 INFO L87 Difference]: Start difference. First operand 1031 states and 1087 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:10,317 INFO L93 Difference]: Finished difference Result 1496 states and 1584 transitions. [2021-11-19 15:02:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 15:02:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:10,326 INFO L225 Difference]: With dead ends: 1496 [2021-11-19 15:02:10,326 INFO L226 Difference]: Without dead ends: 1496 [2021-11-19 15:02:10,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:10,328 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1544 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:10,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1364 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 15:02:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-19 15:02:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1066. [2021-11-19 15:02:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 560 states have (on average 2.0714285714285716) internal successors, (1160), 1061 states have internal predecessors, (1160), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1166 transitions. [2021-11-19 15:02:10,371 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1166 transitions. Word has length 3 [2021-11-19 15:02:10,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:10,371 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1166 transitions. [2021-11-19 15:02:10,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1166 transitions. [2021-11-19 15:02:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:02:10,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:10,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:10,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 15:02:10,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:10,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:10,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 15:02:10,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:10,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894278016] [2021-11-19 15:02:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:10,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:10,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:10,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:02:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:10,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:02:10,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:10,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:10,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:10,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:10,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894278016] [2021-11-19 15:02:10,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894278016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:10,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:10,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:02:10,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518834536] [2021-11-19 15:02:10,792 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:10,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:02:10,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:02:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:02:10,795 INFO L87 Difference]: Start difference. First operand 1066 states and 1166 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) [2021-11-19 15:02:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:13,314 INFO L93 Difference]: Finished difference Result 1396 states and 1521 transitions. [2021-11-19 15:02:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:02:13,320 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 [2021-11-19 15:02:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:13,329 INFO L225 Difference]: With dead ends: 1396 [2021-11-19 15:02:13,329 INFO L226 Difference]: Without dead ends: 1396 [2021-11-19 15:02:13,330 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 [2021-11-19 15:02:13,331 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 975 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:13,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1168 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:02:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-19 15:02:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1019. [2021-11-19 15:02:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 560 states have (on average 1.9821428571428572) internal successors, (1110), 1014 states have internal predecessors, (1110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1116 transitions. [2021-11-19 15:02:13,367 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1116 transitions. Word has length 8 [2021-11-19 15:02:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:13,368 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1116 transitions. [2021-11-19 15:02:13,368 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) [2021-11-19 15:02:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1116 transitions. [2021-11-19 15:02:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:02:13,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:13,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:13,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:13,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:13,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 15:02:13,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:13,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34271061] [2021-11-19 15:02:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:13,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:13,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:13,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:02:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:13,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:13,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:13,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:13,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:13,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:13,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34271061] [2021-11-19 15:02:13,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34271061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:13,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:13,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 15:02:13,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420400796] [2021-11-19 15:02:13,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:13,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:13,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:13,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:13,882 INFO L87 Difference]: Start difference. First operand 1019 states and 1116 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) [2021-11-19 15:02:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:18,766 INFO L93 Difference]: Finished difference Result 1440 states and 1529 transitions. [2021-11-19 15:02:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:18,769 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 [2021-11-19 15:02:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:18,777 INFO L225 Difference]: With dead ends: 1440 [2021-11-19 15:02:18,777 INFO L226 Difference]: Without dead ends: 1440 [2021-11-19 15:02:18,777 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 [2021-11-19 15:02:18,778 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 717 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:18,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1909 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 15:02:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-19 15:02:18,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1009. [2021-11-19 15:02:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 560 states have (on average 1.9589285714285714) internal successors, (1097), 1004 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1103 transitions. [2021-11-19 15:02:18,810 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1103 transitions. Word has length 8 [2021-11-19 15:02:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:18,811 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1103 transitions. [2021-11-19 15:02:18,811 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) [2021-11-19 15:02:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1103 transitions. [2021-11-19 15:02:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 15:02:18,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:18,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:18,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 15:02:19,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:19,035 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:19,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:19,036 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-19 15:02:19,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:19,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150923028] [2021-11-19 15:02:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:19,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:19,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:19,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:02:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:19,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:02:19,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:19,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:19,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:19,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150923028] [2021-11-19 15:02:19,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150923028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:19,288 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:19,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:02:19,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348931985] [2021-11-19 15:02:19,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:19,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:19,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:19,290 INFO L87 Difference]: Start difference. First operand 1009 states and 1103 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:20,060 INFO L93 Difference]: Finished difference Result 1456 states and 1582 transitions. [2021-11-19 15:02:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:02:20,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 15:02:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:20,070 INFO L225 Difference]: With dead ends: 1456 [2021-11-19 15:02:20,070 INFO L226 Difference]: Without dead ends: 1456 [2021-11-19 15:02:20,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:02:20,073 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 548 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:20,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 2931 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:02:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-11-19 15:02:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1246. [2021-11-19 15:02:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 797 states have (on average 1.9422835633626099) internal successors, (1548), 1241 states have internal predecessors, (1548), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1554 transitions. [2021-11-19 15:02:20,118 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1554 transitions. Word has length 11 [2021-11-19 15:02:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:20,118 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1554 transitions. [2021-11-19 15:02:20,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1554 transitions. [2021-11-19 15:02:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 15:02:20,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:20,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:20,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:20,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:20,332 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:20,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:20,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1242933253, now seen corresponding path program 1 times [2021-11-19 15:02:20,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:20,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197055314] [2021-11-19 15:02:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:20,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:20,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:20,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:20,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:02:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:20,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:20,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:20,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:02:20,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:02:20,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:02:20,577 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 15:02:20,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 15:02:20,677 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 15:02:20,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 15:02:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:20,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:20,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:20,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197055314] [2021-11-19 15:02:20,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197055314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:20,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:20,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:02:20,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855161946] [2021-11-19 15:02:20,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:20,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:20,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:02:20,796 INFO L87 Difference]: Start difference. First operand 1246 states and 1554 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-11-19 15:02:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:22,758 INFO L93 Difference]: Finished difference Result 1602 states and 1969 transitions. [2021-11-19 15:02:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 12 [2021-11-19 15:02:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:22,772 INFO L225 Difference]: With dead ends: 1602 [2021-11-19 15:02:22,773 INFO L226 Difference]: Without dead ends: 1602 [2021-11-19 15:02:22,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:22,776 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 708 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:22,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2792 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:02:22,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-19 15:02:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1245. [2021-11-19 15:02:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 796 states have (on average 1.9422110552763818) internal successors, (1546), 1240 states have internal predecessors, (1546), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1552 transitions. [2021-11-19 15:02:22,823 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1552 transitions. Word has length 12 [2021-11-19 15:02:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:22,824 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1552 transitions. [2021-11-19 15:02:22,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-11-19 15:02:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1552 transitions. [2021-11-19 15:02:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 15:02:22,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:22,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:22,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:23,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:23,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 15:02:23,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:23,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981632939] [2021-11-19 15:02:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:23,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:23,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:23,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:02:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:23,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:02:23,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:23,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:23,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:23,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981632939] [2021-11-19 15:02:23,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981632939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:23,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:23,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:02:23,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416698990] [2021-11-19 15:02:23,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:23,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:23,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:23,343 INFO L87 Difference]: Start difference. First operand 1245 states and 1552 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) [2021-11-19 15:02:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:23,396 INFO L93 Difference]: Finished difference Result 1185 states and 1466 transitions. [2021-11-19 15:02:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:02:23,397 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 [2021-11-19 15:02:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:23,405 INFO L225 Difference]: With dead ends: 1185 [2021-11-19 15:02:23,405 INFO L226 Difference]: Without dead ends: 1185 [2021-11-19 15:02:23,406 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 [2021-11-19 15:02:23,407 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 1914 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:23,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 995 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:02:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-11-19 15:02:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2021-11-19 15:02:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 760 states have (on average 1.9210526315789473) internal successors, (1460), 1180 states have internal predecessors, (1460), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1466 transitions. [2021-11-19 15:02:23,457 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1466 transitions. Word has length 18 [2021-11-19 15:02:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:23,457 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1466 transitions. [2021-11-19 15:02:23,458 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) [2021-11-19 15:02:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1466 transitions. [2021-11-19 15:02:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:02:23,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:23,460 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] [2021-11-19 15:02:23,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:23,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:23,673 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 15:02:23,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:23,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185744370] [2021-11-19 15:02:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:23,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:23,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:23,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:02:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:23,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:23,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:23,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:23,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:23,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185744370] [2021-11-19 15:02:23,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185744370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:23,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:23,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:02:23,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604929318] [2021-11-19 15:02:23,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:23,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:23,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:02:23,947 INFO L87 Difference]: Start difference. First operand 1185 states and 1466 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) [2021-11-19 15:02:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:24,068 INFO L93 Difference]: Finished difference Result 1157 states and 1410 transitions. [2021-11-19 15:02:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:24,069 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 [2021-11-19 15:02:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:24,077 INFO L225 Difference]: With dead ends: 1157 [2021-11-19 15:02:24,077 INFO L226 Difference]: Without dead ends: 1157 [2021-11-19 15:02:24,078 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 [2021-11-19 15:02:24,079 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1846 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:24,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 1871 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-19 15:02:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1155. [2021-11-19 15:02:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 744 states have (on average 1.8844086021505377) internal successors, (1402), 1150 states have internal predecessors, (1402), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1408 transitions. [2021-11-19 15:02:24,114 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1408 transitions. Word has length 20 [2021-11-19 15:02:24,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:24,115 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1408 transitions. [2021-11-19 15:02:24,115 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) [2021-11-19 15:02:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1408 transitions. [2021-11-19 15:02:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:02:24,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:24,117 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] [2021-11-19 15:02:24,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:24,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:24,334 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 15:02:24,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:24,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702813128] [2021-11-19 15:02:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:24,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:24,337 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:24,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:02:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:24,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:24,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:24,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:24,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:24,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:24,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702813128] [2021-11-19 15:02:24,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702813128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:24,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:24,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:02:24,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47947768] [2021-11-19 15:02:24,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:24,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:24,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:24,815 INFO L87 Difference]: Start difference. First operand 1155 states and 1408 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) [2021-11-19 15:02:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:27,233 INFO L93 Difference]: Finished difference Result 1618 states and 1991 transitions. [2021-11-19 15:02:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:02:27,235 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 [2021-11-19 15:02:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:27,244 INFO L225 Difference]: With dead ends: 1618 [2021-11-19 15:02:27,244 INFO L226 Difference]: Without dead ends: 1618 [2021-11-19 15:02:27,245 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 [2021-11-19 15:02:27,245 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 1684 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:27,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1009 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:02:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2021-11-19 15:02:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1151. [2021-11-19 15:02:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 744 states have (on average 1.8736559139784945) internal successors, (1394), 1146 states have internal predecessors, (1394), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1400 transitions. [2021-11-19 15:02:27,280 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1400 transitions. Word has length 34 [2021-11-19 15:02:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:27,281 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1400 transitions. [2021-11-19 15:02:27,281 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) [2021-11-19 15:02:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1400 transitions. [2021-11-19 15:02:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:02:27,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:27,283 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] [2021-11-19 15:02:27,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:27,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:27,496 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 15:02:27,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:27,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201681874] [2021-11-19 15:02:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:27,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:27,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:27,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:02:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:27,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:02:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:27,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:28,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:28,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:28,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201681874] [2021-11-19 15:02:28,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201681874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:28,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:28,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:02:28,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132678230] [2021-11-19 15:02:28,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:28,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:28,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:28,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:28,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:02:28,576 INFO L87 Difference]: Start difference. First operand 1151 states and 1400 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) [2021-11-19 15:02:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:35,388 INFO L93 Difference]: Finished difference Result 1751 states and 2146 transitions. [2021-11-19 15:02:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:35,389 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 [2021-11-19 15:02:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:35,397 INFO L225 Difference]: With dead ends: 1751 [2021-11-19 15:02:35,397 INFO L226 Difference]: Without dead ends: 1751 [2021-11-19 15:02:35,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:02:35,398 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1825 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:35,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 2395 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 15:02:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-11-19 15:02:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1147. [2021-11-19 15:02:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 744 states have (on average 1.8629032258064515) internal successors, (1386), 1142 states have internal predecessors, (1386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1392 transitions. [2021-11-19 15:02:35,437 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1392 transitions. Word has length 34 [2021-11-19 15:02:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:35,438 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1392 transitions. [2021-11-19 15:02:35,439 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) [2021-11-19 15:02:35,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1392 transitions. [2021-11-19 15:02:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 15:02:35,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:35,448 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] [2021-11-19 15:02:35,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:35,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:35,660 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-19 15:02:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:35,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014612888] [2021-11-19 15:02:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:35,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:35,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:35,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:02:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:35,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:35,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:35,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:36,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:36,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014612888] [2021-11-19 15:02:36,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014612888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:36,095 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:36,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:02:36,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369575412] [2021-11-19 15:02:36,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:36,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:36,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:36,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:02:36,097 INFO L87 Difference]: Start difference. First operand 1147 states and 1392 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) [2021-11-19 15:02:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:36,158 INFO L93 Difference]: Finished difference Result 1135 states and 1372 transitions. [2021-11-19 15:02:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:36,159 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 [2021-11-19 15:02:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:36,165 INFO L225 Difference]: With dead ends: 1135 [2021-11-19 15:02:36,165 INFO L226 Difference]: Without dead ends: 1135 [2021-11-19 15:02:36,165 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 [2021-11-19 15:02:36,166 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 904 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:36,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1849 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:02:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-19 15:02:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2021-11-19 15:02:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 732 states have (on average 1.866120218579235) internal successors, (1366), 1130 states have internal predecessors, (1366), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2021-11-19 15:02:36,193 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 52 [2021-11-19 15:02:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:36,193 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2021-11-19 15:02:36,194 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) [2021-11-19 15:02:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2021-11-19 15:02:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 15:02:36,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:36,196 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] [2021-11-19 15:02:36,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:36,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:36,410 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 15:02:36,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:36,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594684873] [2021-11-19 15:02:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:36,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:36,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:36,413 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:36,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:02:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:36,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:02:36,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:36,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:36,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:37,419 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 15:02:37,419 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 [2021-11-19 15:02:37,437 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:02:37,437 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 [2021-11-19 15:02:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:37,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:42,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:42,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594684873] [2021-11-19 15:02:42,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594684873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:42,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:42,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:02:42,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96194238] [2021-11-19 15:02:42,460 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:42,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:42,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 15:02:42,462 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 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) [2021-11-19 15:02:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:48,251 INFO L93 Difference]: Finished difference Result 1746 states and 2081 transitions. [2021-11-19 15:02:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:02:48,252 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 [2021-11-19 15:02:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:48,259 INFO L225 Difference]: With dead ends: 1746 [2021-11-19 15:02:48,259 INFO L226 Difference]: Without dead ends: 1746 [2021-11-19 15:02:48,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 15:02:48,260 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 2212 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:48,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 1575 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1426 Invalid, 0 Unknown, 1470 Unchecked, 5.7s Time] [2021-11-19 15:02:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2021-11-19 15:02:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1113. [2021-11-19 15:02:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 742 states have (on average 1.8221024258760108) internal successors, (1352), 1108 states have internal predecessors, (1352), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1358 transitions. [2021-11-19 15:02:48,288 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1358 transitions. Word has length 60 [2021-11-19 15:02:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:48,289 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1358 transitions. [2021-11-19 15:02:48,289 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) [2021-11-19 15:02:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1358 transitions. [2021-11-19 15:02:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 15:02:48,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:48,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:48,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:48,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:48,505 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 15:02:48,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:48,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109230189] [2021-11-19 15:02:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:48,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:48,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:48,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:48,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:02:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:48,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:48,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:49,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 15:02:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:49,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:49,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109230189] [2021-11-19 15:02:49,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109230189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:49,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:49,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:02:49,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142592481] [2021-11-19 15:02:49,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:49,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:49,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:02:49,470 INFO L87 Difference]: Start difference. First operand 1113 states and 1358 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) [2021-11-19 15:02:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:51,401 INFO L93 Difference]: Finished difference Result 1111 states and 1356 transitions. [2021-11-19 15:02:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:51,402 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 [2021-11-19 15:02:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:51,408 INFO L225 Difference]: With dead ends: 1111 [2021-11-19 15:02:51,408 INFO L226 Difference]: Without dead ends: 1111 [2021-11-19 15:02:51,408 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 [2021-11-19 15:02:51,409 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 1732 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:51,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 505 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:02:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-19 15:02:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2021-11-19 15:02:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 742 states have (on average 1.8194070080862534) internal successors, (1350), 1106 states have internal predecessors, (1350), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1356 transitions. [2021-11-19 15:02:51,430 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1356 transitions. Word has length 62 [2021-11-19 15:02:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:51,431 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1356 transitions. [2021-11-19 15:02:51,431 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) [2021-11-19 15:02:51,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1356 transitions. [2021-11-19 15:02:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 15:02:51,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:51,432 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] [2021-11-19 15:02:51,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:51,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:51,645 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:51,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 15:02:51,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:51,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049372499] [2021-11-19 15:02:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:51,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:51,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:51,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:51,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:02:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:51,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:51,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:51,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 15:02:52,005 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 [2021-11-19 15:02:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:52,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:52,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:52,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049372499] [2021-11-19 15:02:52,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049372499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:52,150 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:52,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:02:52,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930846778] [2021-11-19 15:02:52,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:52,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:52,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:02:52,152 INFO L87 Difference]: Start difference. First operand 1111 states and 1356 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) [2021-11-19 15:02:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:54,906 INFO L93 Difference]: Finished difference Result 1110 states and 1355 transitions. [2021-11-19 15:02:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:02:54,907 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 [2021-11-19 15:02:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:54,911 INFO L225 Difference]: With dead ends: 1110 [2021-11-19 15:02:54,911 INFO L226 Difference]: Without dead ends: 1110 [2021-11-19 15:02:54,912 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 [2021-11-19 15:02:54,912 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 4 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:54,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2257 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 15:02:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-19 15:02:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-19 15:02:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 742 states have (on average 1.8180592991913747) internal successors, (1349), 1105 states have internal predecessors, (1349), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:02:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1355 transitions. [2021-11-19 15:02:54,932 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1355 transitions. Word has length 65 [2021-11-19 15:02:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:54,932 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1355 transitions. [2021-11-19 15:02:54,932 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) [2021-11-19 15:02:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1355 transitions. [2021-11-19 15:02:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 15:02:54,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:54,934 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] [2021-11-19 15:02:54,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:55,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:55,147 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:02:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 15:02:55,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:55,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331245193] [2021-11-19 15:02:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:55,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:55,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:55,149 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:55,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:02:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:55,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:02:55,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:55,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:02:55,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 15:02:55,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 15:02:55,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 15:02:55,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 15:02:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:55,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:55,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:55,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331245193] [2021-11-19 15:02:55,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331245193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:55,892 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:55,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 15:02:55,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985064063] [2021-11-19 15:02:55,892 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:55,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:02:55,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:02:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:02:55,894 INFO L87 Difference]: Start difference. First operand 1110 states and 1355 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) [2021-11-19 15:03:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:04,637 INFO L93 Difference]: Finished difference Result 1109 states and 1354 transitions. [2021-11-19 15:03:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:03:04,638 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 [2021-11-19 15:03:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:04,644 INFO L225 Difference]: With dead ends: 1109 [2021-11-19 15:03:04,644 INFO L226 Difference]: Without dead ends: 1109 [2021-11-19 15:03:04,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:04,645 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 2 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:04,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3213 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-19 15:03:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-19 15:03:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-11-19 15:03:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 741 states have (on average 1.8191632928475034) internal successors, (1348), 1104 states have internal predecessors, (1348), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:03:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1354 transitions. [2021-11-19 15:03:04,666 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1354 transitions. Word has length 65 [2021-11-19 15:03:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:04,667 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1354 transitions. [2021-11-19 15:03:04,667 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) [2021-11-19 15:03:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1354 transitions. [2021-11-19 15:03:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 15:03:04,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:04,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:04,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 15:03:04,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:04,902 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:03:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1702947151, now seen corresponding path program 1 times [2021-11-19 15:03:04,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:04,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754775243] [2021-11-19 15:03:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:04,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:04,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:04,905 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:04,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:03:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:03:05,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:05,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:05,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:05,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754775243] [2021-11-19 15:03:05,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754775243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:05,366 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:05,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:03:05,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789692051] [2021-11-19 15:03:05,366 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:05,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:03:05,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:03:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:03:05,368 INFO L87 Difference]: Start difference. First operand 1109 states and 1354 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) [2021-11-19 15:03:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:05,466 INFO L93 Difference]: Finished difference Result 1119 states and 1367 transitions. [2021-11-19 15:03:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:03:05,467 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 [2021-11-19 15:03:05,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:05,475 INFO L225 Difference]: With dead ends: 1119 [2021-11-19 15:03:05,475 INFO L226 Difference]: Without dead ends: 1119 [2021-11-19 15:03:05,476 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 [2021-11-19 15:03:05,476 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 11 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:05,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1773 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:03:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-19 15:03:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-19 15:03:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 749 states have (on average 1.8157543391188251) internal successors, (1360), 1113 states have internal predecessors, (1360), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 15:03:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1367 transitions. [2021-11-19 15:03:05,504 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1367 transitions. Word has length 73 [2021-11-19 15:03:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:05,505 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1367 transitions. [2021-11-19 15:03:05,505 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) [2021-11-19 15:03:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1367 transitions. [2021-11-19 15:03:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 15:03:05,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:05,506 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] [2021-11-19 15:03:05,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:05,722 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:03:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1510574161, now seen corresponding path program 1 times [2021-11-19 15:03:05,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:05,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231375779] [2021-11-19 15:03:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:05,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:05,724 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:05,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:03:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:05,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:03:05,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:06,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:06,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:06,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231375779] [2021-11-19 15:03:06,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231375779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:06,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [682255206] [2021-11-19 15:03:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:06,422 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:06,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:03:06,424 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:03:06,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 15:03:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:06,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:03:06,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:06,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [682255206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:07,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828389407] [2021-11-19 15:03:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:07,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:03:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:03:07,020 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:03:07,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 15:03:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:07,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:03:07,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:07,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:07,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828389407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:07,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:03:07,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 15:03:07,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442357659] [2021-11-19 15:03:07,598 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:03:07,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:03:07,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:03:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:03:07,600 INFO L87 Difference]: Start difference. First operand 1119 states and 1367 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) [2021-11-19 15:03:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:08,128 INFO L93 Difference]: Finished difference Result 1133 states and 1384 transitions. [2021-11-19 15:03:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 15:03:08,129 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 [2021-11-19 15:03:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:08,134 INFO L225 Difference]: With dead ends: 1133 [2021-11-19 15:03:08,135 INFO L226 Difference]: Without dead ends: 1127 [2021-11-19 15:03:08,135 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 [2021-11-19 15:03:08,136 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 33 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5299 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:08,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5299 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:03:08,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-11-19 15:03:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1125. [2021-11-19 15:03:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 755 states have (on average 1.8105960264900662) internal successors, (1367), 1119 states have internal predecessors, (1367), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 15:03:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1374 transitions. [2021-11-19 15:03:08,160 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1374 transitions. Word has length 75 [2021-11-19 15:03:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:08,160 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1374 transitions. [2021-11-19 15:03:08,161 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) [2021-11-19 15:03:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1374 transitions. [2021-11-19 15:03:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 15:03:08,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:08,162 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] [2021-11-19 15:03:08,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:08,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:08,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:08,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:08,786 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:03:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:08,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1938377839, now seen corresponding path program 2 times [2021-11-19 15:03:08,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:08,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653214704] [2021-11-19 15:03:08,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:03:08,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:08,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:08,788 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:08,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:03:09,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:03:09,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:03:09,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:09,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:09,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:09,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653214704] [2021-11-19 15:03:09,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653214704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:09,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [712922190] [2021-11-19 15:03:09,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:03:09,943 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:03:09,945 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:03:09,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 15:03:10,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:03:10,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:10,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:03:10,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:10,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:11,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [712922190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:11,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516955653] [2021-11-19 15:03:11,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:03:11,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:03:11,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:03:11,058 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:03:11,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 15:03:41,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:03:41,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:41,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:03:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:41,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:42,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516955653] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:42,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:03:42,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-19 15:03:42,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463391362] [2021-11-19 15:03:42,158 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:03:42,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 15:03:42,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 15:03:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:03:42,160 INFO L87 Difference]: Start difference. First operand 1125 states and 1374 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2021-11-19 15:03:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:43,828 INFO L93 Difference]: Finished difference Result 1151 states and 1409 transitions. [2021-11-19 15:03:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 15:03:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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 79 [2021-11-19 15:03:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:43,835 INFO L225 Difference]: With dead ends: 1151 [2021-11-19 15:03:43,835 INFO L226 Difference]: Without dead ends: 1145 [2021-11-19 15:03:43,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=706, Invalid=1364, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 15:03:43,837 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 84 mSDsluCounter, 7970 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:43,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 8860 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:03:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-19 15:03:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1137. [2021-11-19 15:03:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 767 states have (on average 1.801825293350717) internal successors, (1382), 1131 states have internal predecessors, (1382), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 15:03:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1389 transitions. [2021-11-19 15:03:43,860 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1389 transitions. Word has length 79 [2021-11-19 15:03:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:43,861 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1389 transitions. [2021-11-19 15:03:43,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2021-11-19 15:03:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1389 transitions. [2021-11-19 15:03:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 15:03:43,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:43,862 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] [2021-11-19 15:03:43,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:44,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:44,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-19 15:03:44,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:03:44,477 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-19 15:03:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -654977553, now seen corresponding path program 3 times [2021-11-19 15:03:44,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:44,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596078247] [2021-11-19 15:03:44,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:03:44,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:44,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:44,480 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:44,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:03:45,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:03:45,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:45,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:03:45,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:45,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:47,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:47,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596078247] [2021-11-19 15:03:47,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596078247] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:47,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1387724040] [2021-11-19 15:03:47,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:03:47,134 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:03:47,137 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:03:47,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 15:03:49,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:03:49,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:49,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:03:49,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:49,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:49,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1387724040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:49,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265261041] [2021-11-19 15:03:49,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:03:49,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:03:49,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:03:49,792 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:03:49,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae25f6e-605c-43a1-96a1-a6defe69b250/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process