./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:06:51,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:06:51,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:06:51,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:06:51,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:06:51,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:06:51,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:06:51,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:06:51,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:06:51,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:06:51,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:06:51,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:06:51,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:06:51,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:06:51,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:06:51,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:06:51,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:06:51,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:06:51,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:06:51,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:06:51,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:06:51,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:06:51,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:06:51,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:06:51,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:06:51,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:06:51,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:06:51,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:06:51,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:06:51,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:06:51,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:06:51,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:06:51,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:06:51,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:06:51,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:06:51,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:06:51,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:06:51,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:06:51,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:06:51,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:06:51,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:06:51,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:06:51,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:06:51,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:06:51,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:06:51,219 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:06:51,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:06:51,219 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:06:51,220 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:06:51,220 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:06:51,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:06:51,221 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:06:51,222 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:06:51,222 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:06:51,223 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:06:51,223 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:06:51,223 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:06:51,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:06:51,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:06:51,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:06:51,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:06:51,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:06:51,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:06:51,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:06:51,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:06:51,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:06:51,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:06:51,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:06:51,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:06:51,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:06:51,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:06:51,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:06:51,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:51,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:06:51,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:06:51,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:06:51,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:06:51,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:06:51,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:06:51,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:06:51,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:06:51,240 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_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2021-11-07 02:06:51,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:06:51,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:06:51,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:06:51,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:06:51,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:06:51,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-07 02:06:51,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/4ac1159aa/950da50e87dc4b259447f221bfc04d97/FLAGcfc51f318 [2021-11-07 02:06:52,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:06:52,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-07 02:06:52,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/4ac1159aa/950da50e87dc4b259447f221bfc04d97/FLAGcfc51f318 [2021-11-07 02:06:52,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/4ac1159aa/950da50e87dc4b259447f221bfc04d97 [2021-11-07 02:06:52,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:06:52,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:06:52,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:52,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:06:52,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:06:52,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:52" (1/1) ... [2021-11-07 02:06:52,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2e078f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:52, skipping insertion in model container [2021-11-07 02:06:52,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:52" (1/1) ... [2021-11-07 02:06:52,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:06:52,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:52,956 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-07 02:06:52,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:52,979 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) [2021-11-07 02:06:52,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e7ae012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:52, skipping insertion in model container [2021-11-07 02:06:52,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:52,980 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:06:52,983 INFO L168 Benchmark]: Toolchain (without parser) took 365.81 ms. Allocated memory is still 94.4 MB. Free memory was 53.1 MB in the beginning and 70.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:52,984 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:06:52,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.81 ms. Allocated memory is still 94.4 MB. Free memory was 52.9 MB in the beginning and 70.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:52,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.81 ms. Allocated memory is still 94.4 MB. Free memory was 52.9 MB in the beginning and 70.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:06:55,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:06:55,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:06:55,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:06:55,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:06:55,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:06:55,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:06:55,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:06:55,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:06:55,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:06:55,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:06:55,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:06:55,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:06:55,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:06:55,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:06:55,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:06:55,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:06:55,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:06:55,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:06:55,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:06:55,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:06:55,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:06:55,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:06:55,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:06:55,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:06:55,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:06:55,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:06:55,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:06:55,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:06:55,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:06:55,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:06:55,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:06:55,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:06:55,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:06:55,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:06:55,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:06:55,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:06:55,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:06:55,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:06:55,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:06:55,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:06:55,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:06:55,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:06:55,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:06:55,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:06:55,926 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:06:55,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:06:55,926 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:06:55,927 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:06:55,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:06:55,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:06:55,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:06:55,931 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:06:55,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:06:55,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:06:55,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:06:55,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:06:55,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:06:55,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:06:55,933 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:06:55,933 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:06:55,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:06:55,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:06:55,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:06:55,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:06:55,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:06:55,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:06:55,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:06:55,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:55,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:06:55,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:06:55,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:06:55,936 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:06:55,936 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:55,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:06:55,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:06:55,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:06:55,937 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_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2021-11-07 02:06:56,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:06:56,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:06:56,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:06:56,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:06:56,460 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:06:56,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-07 02:06:56,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/cb3c7c5d5/bc319d7703884e16818e95c2b23a6bf6/FLAGbfcbb31df [2021-11-07 02:06:57,279 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:06:57,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-07 02:06:57,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/cb3c7c5d5/bc319d7703884e16818e95c2b23a6bf6/FLAGbfcbb31df [2021-11-07 02:06:57,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/data/cb3c7c5d5/bc319d7703884e16818e95c2b23a6bf6 [2021-11-07 02:06:57,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:06:57,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:06:57,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:57,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:06:57,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:06:57,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:57" (1/1) ... [2021-11-07 02:06:57,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3295a3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:57, skipping insertion in model container [2021-11-07 02:06:57,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:57" (1/1) ... [2021-11-07 02:06:57,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:06:57,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:57,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-07 02:06:57,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:57,889 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:06:57,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:57,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-07 02:06:58,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:58,048 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:06:58,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-07 02:06:58,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:58,135 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:06:58,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58 WrapperNode [2021-11-07 02:06:58,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:58,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:06:58,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:06:58,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:06:58,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:06:58,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:06:58,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:06:58,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:06:58,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:06:58,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:06:58,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:06:58,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:06:58,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (1/1) ... [2021-11-07 02:06:58,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:06:58,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:06:58,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:06:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:06:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:06:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:06:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 02:06:58,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 02:06:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 02:06:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 02:06:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 02:06:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 02:06:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-07 02:06:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-07 02:06:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 02:06:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 02:06:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:06:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:06:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:06:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:06:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:06:58,500 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 02:07:01,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:07:01,492 INFO L299 CfgBuilder]: Removed 74 assume(true) statements. [2021-11-07 02:07:01,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:01 BoogieIcfgContainer [2021-11-07 02:07:01,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:07:01,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:07:01,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:07:01,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:07:01,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:06:57" (1/3) ... [2021-11-07 02:07:01,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63181123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:01, skipping insertion in model container [2021-11-07 02:07:01,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:58" (2/3) ... [2021-11-07 02:07:01,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63181123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:01, skipping insertion in model container [2021-11-07 02:07:01,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:01" (3/3) ... [2021-11-07 02:07:01,506 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2021-11-07 02:07:01,513 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 02:07:01,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:07:01,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:07:01,514 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 02:07:01,580 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,585 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,587 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,589 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,589 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,594 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,594 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,595 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,597 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,598 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,604 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,605 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,606 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,608 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,610 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,611 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,613 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,613 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,613 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,617 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,619 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,620 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,621 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,624 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,624 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,624 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,624 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,624 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,626 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,628 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,628 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,629 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,630 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,630 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,630 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,631 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,631 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,631 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,631 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,632 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,632 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,632 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,632 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,633 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,633 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,633 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,633 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,634 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,634 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,634 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,634 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,635 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,635 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,635 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,635 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,636 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,636 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,636 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,636 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,636 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,637 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,637 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,638 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,638 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,638 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,638 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,638 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,643 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,647 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,647 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,648 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,648 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,648 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,648 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,649 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,649 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,649 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,649 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,652 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,667 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,667 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,668 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,668 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,668 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,668 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,668 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,669 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,669 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,669 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:01,684 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-07 02:07:01,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:07:01,793 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-07 02:07:01,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 02:07:01,816 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 02:07:01,831 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 284 transitions, 600 flow [2021-11-07 02:07:01,834 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 284 transitions, 600 flow [2021-11-07 02:07:01,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 272 places, 284 transitions, 600 flow [2021-11-07 02:07:01,979 INFO L129 PetriNetUnfolder]: 25/280 cut-off events. [2021-11-07 02:07:01,980 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 02:07:01,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 280 events. 25/280 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 243. Up to 2 conditions per place. [2021-11-07 02:07:02,005 INFO L116 LiptonReduction]: Number of co-enabled transitions 2544 [2021-11-07 02:07:35,882 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 172 DAG size of output: 171 [2021-11-07 02:07:44,653 WARN L207 SmtUtils]: Spent 6.43 s on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2021-11-07 02:07:47,637 INFO L131 LiptonReduction]: Checked pairs total: 6296 [2021-11-07 02:07:47,637 INFO L133 LiptonReduction]: Total number of compositions: 282 [2021-11-07 02:07:47,649 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 46 transitions, 124 flow [2021-11-07 02:07:47,764 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 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) [2021-11-07 02:07:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 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) [2021-11-07 02:07:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:07:47,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:47,792 INFO L513 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] [2021-11-07 02:07:47,793 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1523750054, now seen corresponding path program 1 times [2021-11-07 02:07:47,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:47,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78985024] [2021-11-07 02:07:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:47,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:47,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:47,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:07:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:48,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:48,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:48,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:48,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78985024] [2021-11-07 02:07:48,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78985024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:48,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:48,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 02:07:48,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101595069] [2021-11-07 02:07:48,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:48,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:48,412 INFO L87 Difference]: Start difference. First operand has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-07 02:07:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:48,542 INFO L93 Difference]: Finished difference Result 765 states and 3110 transitions. [2021-11-07 02:07:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 25 [2021-11-07 02:07:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:48,577 INFO L225 Difference]: With dead ends: 765 [2021-11-07 02:07:48,577 INFO L226 Difference]: Without dead ends: 756 [2021-11-07 02:07:48,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-07 02:07:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 726. [2021-11-07 02:07:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 4.085517241379311) internal successors, (2962), 725 states have internal predecessors, (2962), 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) [2021-11-07 02:07:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 2962 transitions. [2021-11-07 02:07:48,686 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 2962 transitions. Word has length 25 [2021-11-07 02:07:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:48,688 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 2962 transitions. [2021-11-07 02:07:48,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-07 02:07:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 2962 transitions. [2021-11-07 02:07:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:07:48,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:48,693 INFO L513 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] [2021-11-07 02:07:48,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:48,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:48,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash -244833393, now seen corresponding path program 1 times [2021-11-07 02:07:48,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:48,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114756157] [2021-11-07 02:07:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:48,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:48,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:48,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:07:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:49,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:49,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:49,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:49,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:49,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114756157] [2021-11-07 02:07:49,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114756157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:49,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:49,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:49,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217803663] [2021-11-07 02:07:49,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:49,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:49,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:49,548 INFO L87 Difference]: Start difference. First operand 726 states and 2962 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:49,603 INFO L93 Difference]: Finished difference Result 938 states and 3692 transitions. [2021-11-07 02:07:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:49,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 02:07:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:49,617 INFO L225 Difference]: With dead ends: 938 [2021-11-07 02:07:49,618 INFO L226 Difference]: Without dead ends: 934 [2021-11-07 02:07:49,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-07 02:07:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 816. [2021-11-07 02:07:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 4.061349693251533) internal successors, (3310), 815 states have internal predecessors, (3310), 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) [2021-11-07 02:07:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 3310 transitions. [2021-11-07 02:07:49,674 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 3310 transitions. Word has length 27 [2021-11-07 02:07:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:49,674 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 3310 transitions. [2021-11-07 02:07:49,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 3310 transitions. [2021-11-07 02:07:49,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:07:49,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:49,680 INFO L513 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] [2021-11-07 02:07:49,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:49,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:49,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1110413313, now seen corresponding path program 1 times [2021-11-07 02:07:49,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:49,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940103762] [2021-11-07 02:07:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:49,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:49,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:49,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:07:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:50,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:50,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:50,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:50,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:50,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940103762] [2021-11-07 02:07:50,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940103762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:50,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:50,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:50,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050060416] [2021-11-07 02:07:50,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:50,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:50,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:50,685 INFO L87 Difference]: Start difference. First operand 816 states and 3310 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-07 02:07:50,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:50,744 INFO L93 Difference]: Finished difference Result 1254 states and 4899 transitions. [2021-11-07 02:07:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:50,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 27 [2021-11-07 02:07:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:50,763 INFO L225 Difference]: With dead ends: 1254 [2021-11-07 02:07:50,763 INFO L226 Difference]: Without dead ends: 1206 [2021-11-07 02:07:50,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-11-07 02:07:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1100. [2021-11-07 02:07:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 4.00181983621474) internal successors, (4398), 1099 states have internal predecessors, (4398), 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) [2021-11-07 02:07:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4398 transitions. [2021-11-07 02:07:50,831 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4398 transitions. Word has length 27 [2021-11-07 02:07:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:50,832 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4398 transitions. [2021-11-07 02:07:50,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-07 02:07:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4398 transitions. [2021-11-07 02:07:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:07:50,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:50,838 INFO L513 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] [2021-11-07 02:07:50,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 02:07:51,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:51,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1447950999, now seen corresponding path program 1 times [2021-11-07 02:07:51,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:51,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062760143] [2021-11-07 02:07:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:51,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:51,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:51,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:51,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:07:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:51,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:51,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:51,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:51,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062760143] [2021-11-07 02:07:51,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062760143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:51,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:51,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:51,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528385415] [2021-11-07 02:07:51,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:51,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:51,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:51,687 INFO L87 Difference]: Start difference. First operand 1100 states and 4398 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-07 02:07:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:51,734 INFO L93 Difference]: Finished difference Result 994 states and 3911 transitions. [2021-11-07 02:07:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 27 [2021-11-07 02:07:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:51,749 INFO L225 Difference]: With dead ends: 994 [2021-11-07 02:07:51,749 INFO L226 Difference]: Without dead ends: 964 [2021-11-07 02:07:51,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-11-07 02:07:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 956. [2021-11-07 02:07:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 4.007329842931937) internal successors, (3827), 955 states have internal predecessors, (3827), 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) [2021-11-07 02:07:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 3827 transitions. [2021-11-07 02:07:51,804 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 3827 transitions. Word has length 27 [2021-11-07 02:07:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:51,805 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 3827 transitions. [2021-11-07 02:07:51,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-07 02:07:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 3827 transitions. [2021-11-07 02:07:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:07:51,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:51,810 INFO L513 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] [2021-11-07 02:07:51,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:52,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:52,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 759340475, now seen corresponding path program 1 times [2021-11-07 02:07:52,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:52,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785398177] [2021-11-07 02:07:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:52,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:52,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:52,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:07:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:52,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:52,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:52,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:52,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:52,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785398177] [2021-11-07 02:07:52,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785398177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:52,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:52,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:07:52,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225743721] [2021-11-07 02:07:52,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:52,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:52,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:52,674 INFO L87 Difference]: Start difference. First operand 956 states and 3827 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-07 02:07:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:52,776 INFO L93 Difference]: Finished difference Result 576 states and 2324 transitions. [2021-11-07 02:07:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:52,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 31 [2021-11-07 02:07:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:52,787 INFO L225 Difference]: With dead ends: 576 [2021-11-07 02:07:52,787 INFO L226 Difference]: Without dead ends: 568 [2021-11-07 02:07:52,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-07 02:07:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2021-11-07 02:07:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 4.063492063492063) internal successors, (2304), 567 states have internal predecessors, (2304), 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) [2021-11-07 02:07:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 2304 transitions. [2021-11-07 02:07:52,824 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 2304 transitions. Word has length 31 [2021-11-07 02:07:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:52,825 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 2304 transitions. [2021-11-07 02:07:52,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-07 02:07:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 2304 transitions. [2021-11-07 02:07:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 02:07:52,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:52,832 INFO L513 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] [2021-11-07 02:07:52,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:53,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:53,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1066315658, now seen corresponding path program 1 times [2021-11-07 02:07:53,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:53,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985667315] [2021-11-07 02:07:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:53,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:53,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:53,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:07:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:53,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:07:53,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:53,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:54,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:54,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985667315] [2021-11-07 02:07:54,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985667315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:54,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:54,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:07:54,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962218170] [2021-11-07 02:07:54,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:07:54,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:07:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:07:54,523 INFO L87 Difference]: Start difference. First operand 568 states and 2304 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-11-07 02:07:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:55,305 INFO L93 Difference]: Finished difference Result 1616 states and 6526 transitions. [2021-11-07 02:07:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:07:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 33 [2021-11-07 02:07:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:55,330 INFO L225 Difference]: With dead ends: 1616 [2021-11-07 02:07:55,330 INFO L226 Difference]: Without dead ends: 1584 [2021-11-07 02:07:55,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:07:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-11-07 02:07:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1312. [2021-11-07 02:07:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 4.160945842868039) internal successors, (5455), 1311 states have internal predecessors, (5455), 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) [2021-11-07 02:07:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5455 transitions. [2021-11-07 02:07:55,410 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5455 transitions. Word has length 33 [2021-11-07 02:07:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:55,410 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 5455 transitions. [2021-11-07 02:07:55,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-11-07 02:07:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5455 transitions. [2021-11-07 02:07:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 02:07:55,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:55,431 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-11-07 02:07:55,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:55,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:55,645 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash -904909052, now seen corresponding path program 1 times [2021-11-07 02:07:55,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:55,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094270019] [2021-11-07 02:07:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:55,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:55,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:55,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:07:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:56,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:07:56,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:07:56,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:07:56,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:56,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094270019] [2021-11-07 02:07:56,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094270019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:56,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:56,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:07:56,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15843411] [2021-11-07 02:07:56,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:07:56,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:07:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:07:56,520 INFO L87 Difference]: Start difference. First operand 1312 states and 5455 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-11-07 02:07:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:56,753 INFO L93 Difference]: Finished difference Result 1335 states and 5489 transitions. [2021-11-07 02:07:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:56,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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 37 [2021-11-07 02:07:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:56,774 INFO L225 Difference]: With dead ends: 1335 [2021-11-07 02:07:56,774 INFO L226 Difference]: Without dead ends: 1313 [2021-11-07 02:07:56,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:07:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-11-07 02:07:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1313. [2021-11-07 02:07:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 4.158536585365853) internal successors, (5456), 1312 states have internal predecessors, (5456), 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) [2021-11-07 02:07:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 5456 transitions. [2021-11-07 02:07:56,871 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 5456 transitions. Word has length 37 [2021-11-07 02:07:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:56,871 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 5456 transitions. [2021-11-07 02:07:56,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-11-07 02:07:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 5456 transitions. [2021-11-07 02:07:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:07:56,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:56,879 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-11-07 02:07:56,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:57,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:57,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:07:57,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:57,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1674336279, now seen corresponding path program 1 times [2021-11-07 02:07:57,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:57,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701658750] [2021-11-07 02:07:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:57,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:57,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:57,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:07:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:57,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:07:57,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:07:58,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:07:58,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:58,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701658750] [2021-11-07 02:07:58,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701658750] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:07:58,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2009532866] [2021-11-07 02:07:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:58,750 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:07:58,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:07:58,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:07:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:59,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:07:59,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:07:59,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:07:59,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2009532866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:59,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:07:59,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:07:59,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806488364] [2021-11-07 02:07:59,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:07:59,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:07:59,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:07:59,852 INFO L87 Difference]: Start difference. First operand 1313 states and 5456 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-11-07 02:07:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:59,982 INFO L93 Difference]: Finished difference Result 1346 states and 5512 transitions. [2021-11-07 02:07:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2021-11-07 02:07:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:00,002 INFO L225 Difference]: With dead ends: 1346 [2021-11-07 02:08:00,002 INFO L226 Difference]: Without dead ends: 1314 [2021-11-07 02:08:00,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:08:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-11-07 02:08:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-11-07 02:08:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 4.156130997715156) internal successors, (5457), 1313 states have internal predecessors, (5457), 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) [2021-11-07 02:08:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 5457 transitions. [2021-11-07 02:08:00,082 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 5457 transitions. Word has length 38 [2021-11-07 02:08:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:00,083 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 5457 transitions. [2021-11-07 02:08:00,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-11-07 02:08:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 5457 transitions. [2021-11-07 02:08:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 02:08:00,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:00,090 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-11-07 02:08:00,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:00,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:00,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:00,523 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1368715344, now seen corresponding path program 1 times [2021-11-07 02:08:00,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:00,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523567364] [2021-11-07 02:08:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:00,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:00,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:00,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:00,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:08:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:01,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:01,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:08:01,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:08:02,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:02,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523567364] [2021-11-07 02:08:02,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523567364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:02,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2091140336] [2021-11-07 02:08:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:02,213 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:02,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:02,215 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:02,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:08:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:03,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:03,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:08:03,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:08:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2091140336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:03,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:03,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:08:03,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226224076] [2021-11-07 02:08:03,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:08:03,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:08:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:08:03,371 INFO L87 Difference]: Start difference. First operand 1314 states and 5457 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-11-07 02:08:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:03,512 INFO L93 Difference]: Finished difference Result 1378 states and 5579 transitions. [2021-11-07 02:08:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:08:03,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-11-07 02:08:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:03,530 INFO L225 Difference]: With dead ends: 1378 [2021-11-07 02:08:03,531 INFO L226 Difference]: Without dead ends: 1315 [2021-11-07 02:08:03,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:08:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-11-07 02:08:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2021-11-07 02:08:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 4.153729071537291) internal successors, (5458), 1314 states have internal predecessors, (5458), 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) [2021-11-07 02:08:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 5458 transitions. [2021-11-07 02:08:03,636 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 5458 transitions. Word has length 39 [2021-11-07 02:08:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:03,637 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 5458 transitions. [2021-11-07 02:08:03,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-11-07 02:08:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 5458 transitions. [2021-11-07 02:08:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 02:08:03,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:03,646 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-11-07 02:08:03,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-07 02:08:03,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:04,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:04,051 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1063942440, now seen corresponding path program 1 times [2021-11-07 02:08:04,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:04,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927579685] [2021-11-07 02:08:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:04,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:04,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:04,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:08:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:04,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:04,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:05,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:05,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:05,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927579685] [2021-11-07 02:08:05,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927579685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:05,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [127459603] [2021-11-07 02:08:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:05,645 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:05,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:05,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:05,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:08:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:06,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:08:06,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:06,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:07,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [127459603] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:07,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881900562] [2021-11-07 02:08:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:07,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:07,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:07,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:07,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 02:08:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:08,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:08:08,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:08:08,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:08:08,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881900562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:08,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:08:08,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 16 [2021-11-07 02:08:08,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157909592] [2021-11-07 02:08:08,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:08,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:08:08,524 INFO L87 Difference]: Start difference. First operand 1315 states and 5458 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-11-07 02:08:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:08,640 INFO L93 Difference]: Finished difference Result 1539 states and 6078 transitions. [2021-11-07 02:08:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 40 [2021-11-07 02:08:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:08,658 INFO L225 Difference]: With dead ends: 1539 [2021-11-07 02:08:08,658 INFO L226 Difference]: Without dead ends: 1316 [2021-11-07 02:08:08,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:08:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-11-07 02:08:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1316. [2021-11-07 02:08:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 4.151330798479087) internal successors, (5459), 1315 states have internal predecessors, (5459), 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) [2021-11-07 02:08:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5459 transitions. [2021-11-07 02:08:08,718 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5459 transitions. Word has length 40 [2021-11-07 02:08:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:08,718 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 5459 transitions. [2021-11-07 02:08:08,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-11-07 02:08:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5459 transitions. [2021-11-07 02:08:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 02:08:08,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:08,745 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-11-07 02:08:08,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:08,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-07 02:08:09,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:09,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:09,359 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash -888091401, now seen corresponding path program 1 times [2021-11-07 02:08:09,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:09,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786357604] [2021-11-07 02:08:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:09,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:09,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:09,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:08:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:10,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:10,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:11,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:11,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786357604] [2021-11-07 02:08:11,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786357604] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:11,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [825803524] [2021-11-07 02:08:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:11,024 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:11,025 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:11,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:08:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:11,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:08:11,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:12,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:12,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [825803524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:12,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094439167] [2021-11-07 02:08:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:12,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:12,613 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:12,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 02:08:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:13,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:13,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:13,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:14,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094439167] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:14,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:08:14,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-07 02:08:14,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992096783] [2021-11-07 02:08:14,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:08:14,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:08:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:08:14,072 INFO L87 Difference]: Start difference. First operand 1316 states and 5459 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 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) [2021-11-07 02:08:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:14,431 INFO L93 Difference]: Finished difference Result 1380 states and 5581 transitions. [2021-11-07 02:08:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:08:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 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 41 [2021-11-07 02:08:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:14,449 INFO L225 Difference]: With dead ends: 1380 [2021-11-07 02:08:14,449 INFO L226 Difference]: Without dead ends: 1317 [2021-11-07 02:08:14,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:08:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2021-11-07 02:08:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2021-11-07 02:08:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 4.148936170212766) internal successors, (5460), 1316 states have internal predecessors, (5460), 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) [2021-11-07 02:08:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 5460 transitions. [2021-11-07 02:08:14,507 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 5460 transitions. Word has length 41 [2021-11-07 02:08:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:14,507 INFO L470 AbstractCegarLoop]: Abstraction has 1317 states and 5460 transitions. [2021-11-07 02:08:14,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 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) [2021-11-07 02:08:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 5460 transitions. [2021-11-07 02:08:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:08:14,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:14,515 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-11-07 02:08:14,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:14,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:14,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-07 02:08:15,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:15,125 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1771844746, now seen corresponding path program 2 times [2021-11-07 02:08:15,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:15,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098606953] [2021-11-07 02:08:15,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:08:15,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:15,127 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:15,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:08:16,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:08:16,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:16,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 02:08:16,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:17,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:18,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:18,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098606953] [2021-11-07 02:08:18,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098606953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:18,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578350905] [2021-11-07 02:08:18,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:08:18,408 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:18,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:18,408 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:18,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 02:08:19,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:08:19,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:19,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:08:19,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:20,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:21,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1578350905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:21,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753317195] [2021-11-07 02:08:21,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:08:21,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:21,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:21,251 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:21,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 02:08:22,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:08:22,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:22,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:08:22,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 02:08:22,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 02:08:23,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753317195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:23,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:08:23,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7, 7, 6, 6] total 32 [2021-11-07 02:08:23,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269612057] [2021-11-07 02:08:23,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 02:08:23,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 02:08:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2021-11-07 02:08:23,596 INFO L87 Difference]: Start difference. First operand 1317 states and 5460 transitions. Second operand has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 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) [2021-11-07 02:08:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:28,427 INFO L93 Difference]: Finished difference Result 2119 states and 7794 transitions. [2021-11-07 02:08:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 02:08:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 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 42 [2021-11-07 02:08:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:28,439 INFO L225 Difference]: With dead ends: 2119 [2021-11-07 02:08:28,440 INFO L226 Difference]: Without dead ends: 1319 [2021-11-07 02:08:28,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=586, Invalid=2494, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 02:08:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2021-11-07 02:08:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2021-11-07 02:08:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 4.144157814871017) internal successors, (5462), 1318 states have internal predecessors, (5462), 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) [2021-11-07 02:08:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 5462 transitions. [2021-11-07 02:08:28,493 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 5462 transitions. Word has length 42 [2021-11-07 02:08:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:28,493 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 5462 transitions. [2021-11-07 02:08:28,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 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) [2021-11-07 02:08:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 5462 transitions. [2021-11-07 02:08:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:08:28,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:28,498 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2021-11-07 02:08:28,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:28,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 02:08:28,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:29,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:29,115 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1815061592, now seen corresponding path program 3 times [2021-11-07 02:08:29,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:29,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228304786] [2021-11-07 02:08:29,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:29,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:29,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:29,118 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:29,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:08:31,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 02:08:31,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:31,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:08:31,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:32,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:32,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228304786] [2021-11-07 02:08:32,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228304786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:32,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [906237327] [2021-11-07 02:08:32,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:32,414 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:32,417 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:32,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 02:08:37,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 02:08:37,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:37,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:08:37,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:37,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:38,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [906237327] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:38,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917967031] [2021-11-07 02:08:38,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:38,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:38,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:38,991 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:39,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 02:08:42,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 02:08:42,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:42,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:08:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:43,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:44,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917967031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:44,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:08:44,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 6, 6] total 28 [2021-11-07 02:08:44,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084576296] [2021-11-07 02:08:44,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 02:08:44,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 02:08:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-11-07 02:08:44,329 INFO L87 Difference]: Start difference. First operand 1319 states and 5462 transitions. Second operand has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 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) [2021-11-07 02:08:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:46,805 INFO L93 Difference]: Finished difference Result 4561 states and 18490 transitions. [2021-11-07 02:08:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:08:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 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 44 [2021-11-07 02:08:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:46,831 INFO L225 Difference]: With dead ends: 4561 [2021-11-07 02:08:46,831 INFO L226 Difference]: Without dead ends: 4239 [2021-11-07 02:08:46,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 02:08:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-07 02:08:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 2937. [2021-11-07 02:08:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2936 states have (on average 4.352520435967302) internal successors, (12779), 2936 states have internal predecessors, (12779), 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) [2021-11-07 02:08:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 12779 transitions. [2021-11-07 02:08:46,990 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 12779 transitions. Word has length 44 [2021-11-07 02:08:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:46,990 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 12779 transitions. [2021-11-07 02:08:46,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 28 states have internal predecessors, (147), 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) [2021-11-07 02:08:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 12779 transitions. [2021-11-07 02:08:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:08:47,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:47,002 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2021-11-07 02:08:47,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:47,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-07 02:08:47,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:47,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:47,619 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash 394221774, now seen corresponding path program 1 times [2021-11-07 02:08:47,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:47,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060785676] [2021-11-07 02:08:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:47,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:47,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:47,622 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:47,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 02:08:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:49,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:08:49,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:49,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:50,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:50,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060785676] [2021-11-07 02:08:50,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060785676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:50,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1218600600] [2021-11-07 02:08:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:50,461 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:50,462 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:50,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 02:08:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:52,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:52,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:52,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:53,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1218600600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:53,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365847621] [2021-11-07 02:08:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:53,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:53,578 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:53,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 02:08:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:54,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:08:54,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:55,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:08:55,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365847621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:55,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:08:55,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 21 [2021-11-07 02:08:55,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004626304] [2021-11-07 02:08:55,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 02:08:55,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 02:08:55,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-07 02:08:55,701 INFO L87 Difference]: Start difference. First operand 2937 states and 12779 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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) [2021-11-07 02:08:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:57,944 INFO L93 Difference]: Finished difference Result 8163 states and 34984 transitions. [2021-11-07 02:08:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:08:57,946 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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 44 [2021-11-07 02:08:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:58,001 INFO L225 Difference]: With dead ends: 8163 [2021-11-07 02:08:58,002 INFO L226 Difference]: Without dead ends: 7883 [2021-11-07 02:08:58,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2021-11-07 02:08:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2021-11-07 02:08:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 5962. [2021-11-07 02:08:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5961 states have (on average 4.622546552591847) internal successors, (27555), 5961 states have internal predecessors, (27555), 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) [2021-11-07 02:08:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 27555 transitions. [2021-11-07 02:08:58,474 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 27555 transitions. Word has length 44 [2021-11-07 02:08:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:58,475 INFO L470 AbstractCegarLoop]: Abstraction has 5962 states and 27555 transitions. [2021-11-07 02:08:58,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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) [2021-11-07 02:08:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 27555 transitions. [2021-11-07 02:08:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:08:58,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:58,531 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:08:58,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-07 02:08:58,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-07 02:08:58,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:59,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:59,132 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 581700196, now seen corresponding path program 1 times [2021-11-07 02:08:59,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:59,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376513129] [2021-11-07 02:08:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:59,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:59,137 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:59,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5857913a-96c0-4a6a-8df4-d1e4cd73e06e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 02:09:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:00,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 02:09:00,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:09:20,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:19,506 WARN L207 SmtUtils]: Spent 8.26 m on a formula simplification. DAG size of input: 4650 DAG size of output: 3310 [2021-11-07 02:18:19,575 INFO L354 Elim1Store]: treesize reduction 6792, result has 69.5 percent of original size [2021-11-07 02:18:19,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 48 select indices, 48 select index equivalence classes, 0 disjoint index pairs (out of 1128 index pairs), introduced 48 new quantified variables, introduced 1128 case distinctions, treesize of input 868 treesize of output 15600