./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:51,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:51,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:51,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:51,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:51,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:51,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:51,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:51,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:51,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:51,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:51,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:51,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:51,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:51,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:51,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:51,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:51,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:51,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:51,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:51,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:51,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:51,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:51,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:51,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:51,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:51,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:51,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:51,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:51,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:51,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:51,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:51,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:51,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:51,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:51,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:51,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:51,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:51,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:51,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:51,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:51,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:21:51,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:51,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:51,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:51,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:51,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:51,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:51,232 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:21:51,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:51,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:51,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:21:51,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:21:51,234 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:51,234 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:21:51,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:21:51,234 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:21:51,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:51,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:51,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:21:51,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:51,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:51,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:51,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:51,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:51,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:51,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:51,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:51,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:51,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:51,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:51,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:51,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:51,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:51,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:51,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:51,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:21:51,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:21:51,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:51,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:51,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:51,242 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2021-11-07 02:21:51,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:51,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:51,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:51,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:51,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:51,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-07 02:21:51,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/7a2f17163/27d256dd7eab4c07bd20e16321a9b2d9/FLAGaabf4cee0 [2021-11-07 02:21:52,354 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:52,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-07 02:21:52,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/7a2f17163/27d256dd7eab4c07bd20e16321a9b2d9/FLAGaabf4cee0 [2021-11-07 02:21:52,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/7a2f17163/27d256dd7eab4c07bd20e16321a9b2d9 [2021-11-07 02:21:52,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:52,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:52,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:52,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:52,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:52,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:52" (1/1) ... [2021-11-07 02:21:52,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a804241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:52, skipping insertion in model container [2021-11-07 02:21:52,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:52" (1/1) ... [2021-11-07 02:21:52,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:52,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:52,993 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-07 02:21:53,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:53,407 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 02:21:53,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66d44f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:53, skipping insertion in model container [2021-11-07 02:21:53,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:53,408 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:21:53,412 INFO L168 Benchmark]: Toolchain (without parser) took 847.18 ms. Allocated memory is still 109.1 MB. Free memory was 67.9 MB in the beginning and 74.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:53,413 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 109.1 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:21:53,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.97 ms. Allocated memory is still 109.1 MB. Free memory was 67.7 MB in the beginning and 74.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:53,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 109.1 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 843.97 ms. Allocated memory is still 109.1 MB. Free memory was 67.7 MB in the beginning and 74.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3141]: 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:56,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:56,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:56,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:56,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:56,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:56,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:56,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:56,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:56,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:56,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:56,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:56,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:56,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:56,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:56,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:56,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:56,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:56,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:56,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:56,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:56,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:56,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:56,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:56,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:56,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:56,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:56,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:56,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:56,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:56,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:56,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:56,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:56,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:56,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:56,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:56,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:56,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:56,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:56,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:56,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:56,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:21:56,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:56,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:56,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:56,398 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:56,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:56,398 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:56,399 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:56,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:56,399 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:56,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:56,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:56,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:56,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:56,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:56,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:56,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:56,403 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:56,403 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:21:56,404 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:21:56,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:56,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:56,404 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:56,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:56,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:56,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:21:56,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:56,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:56,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:56,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:56,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:56,406 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:21:56,407 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:56,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:56,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:56,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:56,408 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2021-11-07 02:21:56,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:56,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:56,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:56,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:56,827 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:56,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-07 02:21:56,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/40bc1b3f5/21a7a5a1061944fd9abe5530e6990b91/FLAGeaaa4eb27 [2021-11-07 02:21:57,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:57,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-07 02:21:57,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/40bc1b3f5/21a7a5a1061944fd9abe5530e6990b91/FLAGeaaa4eb27 [2021-11-07 02:21:57,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/data/40bc1b3f5/21a7a5a1061944fd9abe5530e6990b91 [2021-11-07 02:21:57,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:57,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:57,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:57,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:57,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:57,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:57" (1/1) ... [2021-11-07 02:21:57,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cde5f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57, skipping insertion in model container [2021-11-07 02:21:57,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:57" (1/1) ... [2021-11-07 02:21:57,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:57,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:58,356 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-07 02:21:58,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:58,627 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:21:58,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:58,661 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-07 02:21:58,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:58,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:21:58,842 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_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-07 02:21:58,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:59,019 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:21:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59 WrapperNode [2021-11-07 02:21:59,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:59,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:59,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:21:59,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:21:59,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:21:59,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:21:59,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:59,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:21:59,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:21:59,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:21:59,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:21:59,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:21:59,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:21:59,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:21:59,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:22:00,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:22:00,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:22:00,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:22:00,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:22:00,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:22:00,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:22:00,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (1/1) ... [2021-11-07 02:22:00,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:00,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:00,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:22:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:22:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:22:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:22:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:22:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:22:18,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:22:18,431 INFO L299 CfgBuilder]: Removed 1565 assume(true) statements. [2021-11-07 02:22:18,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:22:18 BoogieIcfgContainer [2021-11-07 02:22:18,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:22:18,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:22:18,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:22:18,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:22:18,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:21:57" (1/3) ... [2021-11-07 02:22:18,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cbfabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:22:18, skipping insertion in model container [2021-11-07 02:22:18,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:59" (2/3) ... [2021-11-07 02:22:18,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cbfabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:22:18, skipping insertion in model container [2021-11-07 02:22:18,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:22:18" (3/3) ... [2021-11-07 02:22:18,449 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2021-11-07 02:22:18,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:22:18,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 02:22:18,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:22:18,561 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 02:22:18,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 02:22:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 6968 states, 6962 states have (on average 1.8944268888250502) internal successors, (13189), 6967 states have internal predecessors, (13189), 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 02:22:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:22:18,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:18,735 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 02:22:18,736 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -760238624, now seen corresponding path program 1 times [2021-11-07 02:22:18,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:18,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972846517] [2021-11-07 02:22:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:18,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:18,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:18,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:18,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:22:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:19,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:22:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:19,351 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 02:22:19,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:19,408 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 02:22:19,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:19,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972846517] [2021-11-07 02:22:19,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972846517] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:19,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:19,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:22:19,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247134633] [2021-11-07 02:22:19,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:22:19,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:22:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:22:19,460 INFO L87 Difference]: Start difference. First operand has 6968 states, 6962 states have (on average 1.8944268888250502) internal successors, (13189), 6967 states have internal predecessors, (13189), 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 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 02:22:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:19,680 INFO L93 Difference]: Finished difference Result 6987 states and 13212 transitions. [2021-11-07 02:22:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:22:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 02:22:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:19,764 INFO L225 Difference]: With dead ends: 6987 [2021-11-07 02:22:19,765 INFO L226 Difference]: Without dead ends: 6964 [2021-11-07 02:22:19,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:22:19,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2021-11-07 02:22:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2021-11-07 02:22:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6959 states have (on average 1.8935191837907746) internal successors, (13177), 6963 states have internal predecessors, (13177), 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 02:22:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 13177 transitions. [2021-11-07 02:22:20,254 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 13177 transitions. Word has length 27 [2021-11-07 02:22:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:20,255 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 13177 transitions. [2021-11-07 02:22:20,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 02:22:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 13177 transitions. [2021-11-07 02:22:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 02:22:20,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:20,259 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] [2021-11-07 02:22:20,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:20,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:20,474 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:20,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash -956336241, now seen corresponding path program 1 times [2021-11-07 02:22:20,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:20,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004100170] [2021-11-07 02:22:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:20,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:20,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:20,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:22:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:20,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:20,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:20,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:21,013 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 02:22:21,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:21,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004100170] [2021-11-07 02:22:21,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004100170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:21,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:21,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:22:21,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553324726] [2021-11-07 02:22:21,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:21,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:22:21,018 INFO L87 Difference]: Start difference. First operand 6964 states and 13177 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:22:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:21,427 INFO L93 Difference]: Finished difference Result 13915 states and 26335 transitions. [2021-11-07 02:22:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:22:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 29 [2021-11-07 02:22:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:21,476 INFO L225 Difference]: With dead ends: 13915 [2021-11-07 02:22:21,477 INFO L226 Difference]: Without dead ends: 6964 [2021-11-07 02:22:21,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 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 02:22:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2021-11-07 02:22:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2021-11-07 02:22:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6959 states have (on average 1.892656990946975) internal successors, (13171), 6963 states have internal predecessors, (13171), 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 02:22:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 13171 transitions. [2021-11-07 02:22:21,777 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 13171 transitions. Word has length 29 [2021-11-07 02:22:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:21,779 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 13171 transitions. [2021-11-07 02:22:21,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:22:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 13171 transitions. [2021-11-07 02:22:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 02:22:21,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:21,793 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, 1] [2021-11-07 02:22:21,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:22,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:22,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1074782651, now seen corresponding path program 1 times [2021-11-07 02:22:22,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:22,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387593985] [2021-11-07 02:22:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:22,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:22,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:22,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:22:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:22,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:22:22,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:22,486 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 02:22:22,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:22,602 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 02:22:22,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:22,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387593985] [2021-11-07 02:22:22,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387593985] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:22,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:22,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:22:22,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14845461] [2021-11-07 02:22:22,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:22:22,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:22:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:22,605 INFO L87 Difference]: Start difference. First operand 6964 states and 13171 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 02:22:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:23,302 INFO L93 Difference]: Finished difference Result 13879 states and 26258 transitions. [2021-11-07 02:22:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:22:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 34 [2021-11-07 02:22:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:23,349 INFO L225 Difference]: With dead ends: 13879 [2021-11-07 02:22:23,349 INFO L226 Difference]: Without dead ends: 6937 [2021-11-07 02:22:23,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2021-11-07 02:22:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6937. [2021-11-07 02:22:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 6932 states have (on average 1.8919503750721292) internal successors, (13115), 6936 states have internal predecessors, (13115), 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 02:22:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 13115 transitions. [2021-11-07 02:22:23,650 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 13115 transitions. Word has length 34 [2021-11-07 02:22:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:23,651 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 13115 transitions. [2021-11-07 02:22:23,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 02:22:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 13115 transitions. [2021-11-07 02:22:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 02:22:23,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:23,654 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, 1, 1] [2021-11-07 02:22:23,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:23,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:23,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -33959837, now seen corresponding path program 1 times [2021-11-07 02:22:23,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:23,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347711108] [2021-11-07 02:22:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:23,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:23,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:23,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:23,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:22:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:24,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:24,375 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 02:22:24,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:24,474 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 02:22:24,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:24,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347711108] [2021-11-07 02:22:24,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347711108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:24,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:24,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:22:24,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576635741] [2021-11-07 02:22:24,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:24,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:24,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:22:24,479 INFO L87 Difference]: Start difference. First operand 6937 states and 13115 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 02:22:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:24,972 INFO L93 Difference]: Finished difference Result 13852 states and 26202 transitions. [2021-11-07 02:22:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:22:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 35 [2021-11-07 02:22:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:25,024 INFO L225 Difference]: With dead ends: 13852 [2021-11-07 02:22:25,025 INFO L226 Difference]: Without dead ends: 6937 [2021-11-07 02:22:25,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 02:22:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2021-11-07 02:22:25,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6937. [2021-11-07 02:22:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 6932 states have (on average 1.8910848240046163) internal successors, (13109), 6936 states have internal predecessors, (13109), 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 02:22:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 13109 transitions. [2021-11-07 02:22:25,376 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 13109 transitions. Word has length 35 [2021-11-07 02:22:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:25,377 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 13109 transitions. [2021-11-07 02:22:25,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 02:22:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 13109 transitions. [2021-11-07 02:22:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 02:22:25,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:25,381 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:25,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:25,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:25,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash -219144910, now seen corresponding path program 1 times [2021-11-07 02:22:25,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:25,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118280558] [2021-11-07 02:22:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:25,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:25,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:25,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:25,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:22:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:25,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:22:25,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:26,168 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 02:22:26,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:26,318 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 02:22:26,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:26,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118280558] [2021-11-07 02:22:26,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118280558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:26,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:26,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:22:26,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410417199] [2021-11-07 02:22:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:22:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:22:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:22:26,321 INFO L87 Difference]: Start difference. First operand 6937 states and 13109 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:26,992 INFO L93 Difference]: Finished difference Result 13846 states and 26185 transitions. [2021-11-07 02:22:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:22:26,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 02:22:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:27,013 INFO L225 Difference]: With dead ends: 13846 [2021-11-07 02:22:27,013 INFO L226 Difference]: Without dead ends: 6934 [2021-11-07 02:22:27,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:22:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2021-11-07 02:22:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6934. [2021-11-07 02:22:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 6929 states have (on average 1.8907490258334536) internal successors, (13101), 6933 states have internal predecessors, (13101), 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 02:22:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 13101 transitions. [2021-11-07 02:22:27,321 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 13101 transitions. Word has length 40 [2021-11-07 02:22:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:27,322 INFO L470 AbstractCegarLoop]: Abstraction has 6934 states and 13101 transitions. [2021-11-07 02:22:27,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 13101 transitions. [2021-11-07 02:22:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 02:22:27,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:27,325 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:27,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:27,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:27,543 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:27,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:27,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1833067166, now seen corresponding path program 1 times [2021-11-07 02:22:27,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:27,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049473239] [2021-11-07 02:22:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:27,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:27,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:27,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:22:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:27,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:27,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:28,237 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 02:22:28,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:28,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:28,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049473239] [2021-11-07 02:22:28,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049473239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:28,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:28,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:22:28,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290246688] [2021-11-07 02:22:28,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:28,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:28,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:28,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:22:28,421 INFO L87 Difference]: Start difference. First operand 6934 states and 13101 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 02:22:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:29,847 INFO L93 Difference]: Finished difference Result 17993 states and 34048 transitions. [2021-11-07 02:22:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:22:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 02:22:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:29,897 INFO L225 Difference]: With dead ends: 17993 [2021-11-07 02:22:29,898 INFO L226 Difference]: Without dead ends: 14484 [2021-11-07 02:22:29,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:22:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14484 states. [2021-11-07 02:22:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14484 to 9021. [2021-11-07 02:22:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9021 states, 9016 states have (on average 1.8917480035492458) internal successors, (17056), 9020 states have internal predecessors, (17056), 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 02:22:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9021 states to 9021 states and 17056 transitions. [2021-11-07 02:22:30,467 INFO L78 Accepts]: Start accepts. Automaton has 9021 states and 17056 transitions. Word has length 41 [2021-11-07 02:22:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:30,467 INFO L470 AbstractCegarLoop]: Abstraction has 9021 states and 17056 transitions. [2021-11-07 02:22:30,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 02:22:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 9021 states and 17056 transitions. [2021-11-07 02:22:30,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:22:30,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:30,476 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, 1, 1, 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 02:22:30,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:30,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:30,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:30,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1981159343, now seen corresponding path program 1 times [2021-11-07 02:22:30,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:30,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907546736] [2021-11-07 02:22:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:30,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:30,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:30,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:30,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:22:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:31,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:31,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:31,376 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 02:22:31,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:31,604 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 02:22:31,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:31,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907546736] [2021-11-07 02:22:31,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907546736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:31,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:31,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:22:31,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692380575] [2021-11-07 02:22:31,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:22:31,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:22:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:22:31,606 INFO L87 Difference]: Start difference. First operand 9021 states and 17056 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 02:22:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:32,639 INFO L93 Difference]: Finished difference Result 16938 states and 31806 transitions. [2021-11-07 02:22:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:22:32,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 59 [2021-11-07 02:22:32,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:32,666 INFO L225 Difference]: With dead ends: 16938 [2021-11-07 02:22:32,667 INFO L226 Difference]: Without dead ends: 9145 [2021-11-07 02:22:32,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:22:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2021-11-07 02:22:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 6331. [2021-11-07 02:22:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6326 states have (on average 1.884919380335125) internal successors, (11924), 6330 states have internal predecessors, (11924), 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 02:22:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 11924 transitions. [2021-11-07 02:22:33,079 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 11924 transitions. Word has length 59 [2021-11-07 02:22:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:33,079 INFO L470 AbstractCegarLoop]: Abstraction has 6331 states and 11924 transitions. [2021-11-07 02:22:33,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 02:22:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 11924 transitions. [2021-11-07 02:22:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:22:33,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:33,083 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, 1, 1, 1, 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 02:22:33,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:22:33,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:33,296 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1607338170, now seen corresponding path program 1 times [2021-11-07 02:22:33,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:33,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132796636] [2021-11-07 02:22:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:33,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:33,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:33,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:22:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:33,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:33,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:34,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:35,294 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 02:22:35,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:35,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132796636] [2021-11-07 02:22:35,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132796636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:35,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:35,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:22:35,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574105109] [2021-11-07 02:22:35,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:22:35,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:22:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:35,296 INFO L87 Difference]: Start difference. First operand 6331 states and 11924 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 02:22:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:41,183 INFO L93 Difference]: Finished difference Result 19992 states and 37737 transitions. [2021-11-07 02:22:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:22:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 02:22:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:41,231 INFO L225 Difference]: With dead ends: 19992 [2021-11-07 02:22:41,232 INFO L226 Difference]: Without dead ends: 13706 [2021-11-07 02:22:41,246 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13706 states. [2021-11-07 02:22:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13706 to 8711. [2021-11-07 02:22:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8711 states, 8706 states have (on average 1.884906960716747) internal successors, (16410), 8710 states have internal predecessors, (16410), 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 02:22:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8711 states to 8711 states and 16410 transitions. [2021-11-07 02:22:41,913 INFO L78 Accepts]: Start accepts. Automaton has 8711 states and 16410 transitions. Word has length 60 [2021-11-07 02:22:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:41,913 INFO L470 AbstractCegarLoop]: Abstraction has 8711 states and 16410 transitions. [2021-11-07 02:22:41,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 02:22:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8711 states and 16410 transitions. [2021-11-07 02:22:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 02:22:41,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:41,918 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, 1, 1, 1, 1, 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 02:22:41,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:42,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:42,135 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1022834062, now seen corresponding path program 1 times [2021-11-07 02:22:42,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:42,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995922610] [2021-11-07 02:22:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:42,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:42,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:42,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:42,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:22:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:42,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:42,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:42,973 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 02:22:42,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:43,209 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 02:22:43,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:43,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995922610] [2021-11-07 02:22:43,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995922610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:43,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:43,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:22:43,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922189460] [2021-11-07 02:22:43,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:22:43,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:43,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:22:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:22:43,212 INFO L87 Difference]: Start difference. First operand 8711 states and 16410 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 02:22:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:49,727 INFO L93 Difference]: Finished difference Result 37974 states and 71257 transitions. [2021-11-07 02:22:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:22:49,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-07 02:22:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:49,826 INFO L225 Difference]: With dead ends: 37974 [2021-11-07 02:22:49,826 INFO L226 Difference]: Without dead ends: 29307 [2021-11-07 02:22:50,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:22:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29307 states. [2021-11-07 02:22:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29307 to 8725. [2021-11-07 02:22:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8725 states, 8720 states have (on average 1.88348623853211) internal successors, (16424), 8724 states have internal predecessors, (16424), 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 02:22:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8725 states to 8725 states and 16424 transitions. [2021-11-07 02:22:50,572 INFO L78 Accepts]: Start accepts. Automaton has 8725 states and 16424 transitions. Word has length 61 [2021-11-07 02:22:50,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:50,573 INFO L470 AbstractCegarLoop]: Abstraction has 8725 states and 16424 transitions. [2021-11-07 02:22:50,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 02:22:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8725 states and 16424 transitions. [2021-11-07 02:22:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 02:22:50,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:50,577 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, 1, 1, 1, 1, 1, 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 02:22:50,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:50,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:50,795 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 273736056, now seen corresponding path program 1 times [2021-11-07 02:22:50,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:50,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436520949] [2021-11-07 02:22:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:50,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:50,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:50,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:22:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:51,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:22:51,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:51,495 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 02:22:51,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:51,729 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 02:22:51,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:51,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436520949] [2021-11-07 02:22:51,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436520949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:51,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:51,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:22:51,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419049208] [2021-11-07 02:22:51,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:51,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:22:51,732 INFO L87 Difference]: Start difference. First operand 8725 states and 16424 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 02:22:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:58,002 INFO L93 Difference]: Finished difference Result 27119 states and 50781 transitions. [2021-11-07 02:22:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:22:58,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 62 [2021-11-07 02:22:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:58,047 INFO L225 Difference]: With dead ends: 27119 [2021-11-07 02:22:58,048 INFO L226 Difference]: Without dead ends: 18425 [2021-11-07 02:22:58,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:22:58,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18425 states. [2021-11-07 02:22:58,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18425 to 10912. [2021-11-07 02:22:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10907 states have (on average 1.8467039515907215) internal successors, (20142), 10911 states have internal predecessors, (20142), 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 02:22:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 20142 transitions. [2021-11-07 02:22:58,875 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 20142 transitions. Word has length 62 [2021-11-07 02:22:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:58,875 INFO L470 AbstractCegarLoop]: Abstraction has 10912 states and 20142 transitions. [2021-11-07 02:22:58,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 02:22:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 20142 transitions. [2021-11-07 02:22:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 02:22:58,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:58,880 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, 1, 1, 1, 1, 1, 1, 1, 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 02:22:58,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:59,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:59,087 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:22:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1862095728, now seen corresponding path program 1 times [2021-11-07 02:22:59,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:59,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79589607] [2021-11-07 02:22:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:59,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:59,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:59,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:59,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:22:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:59,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:59,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:59,820 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 02:22:59,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:00,066 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 02:23:00,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:00,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79589607] [2021-11-07 02:23:00,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79589607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:00,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:00,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:23:00,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174164701] [2021-11-07 02:23:00,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:23:00,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:00,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:23:00,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:23:00,069 INFO L87 Difference]: Start difference. First operand 10912 states and 20142 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:03,251 INFO L93 Difference]: Finished difference Result 76962 states and 142581 transitions. [2021-11-07 02:23:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:23:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 02:23:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:03,377 INFO L225 Difference]: With dead ends: 76962 [2021-11-07 02:23:03,377 INFO L226 Difference]: Without dead ends: 66090 [2021-11-07 02:23:03,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:23:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66090 states. [2021-11-07 02:23:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66090 to 17380. [2021-11-07 02:23:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17380 states, 17375 states have (on average 1.8475395683453237) internal successors, (32101), 17379 states have internal predecessors, (32101), 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 02:23:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17380 states to 17380 states and 32101 transitions. [2021-11-07 02:23:04,889 INFO L78 Accepts]: Start accepts. Automaton has 17380 states and 32101 transitions. Word has length 64 [2021-11-07 02:23:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:04,889 INFO L470 AbstractCegarLoop]: Abstraction has 17380 states and 32101 transitions. [2021-11-07 02:23:04,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17380 states and 32101 transitions. [2021-11-07 02:23:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 02:23:04,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:04,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:04,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:05,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:05,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:23:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -475984301, now seen corresponding path program 1 times [2021-11-07 02:23:05,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:05,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232398995] [2021-11-07 02:23:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:05,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:05,095 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:05,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:23:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:05,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:23:05,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:05,827 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 02:23:05,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:06,031 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 02:23:06,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:06,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232398995] [2021-11-07 02:23:06,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232398995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:06,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:06,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:23:06,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352224974] [2021-11-07 02:23:06,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:06,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:06,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:06,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:06,033 INFO L87 Difference]: Start difference. First operand 17380 states and 32101 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:07,425 INFO L93 Difference]: Finished difference Result 45723 states and 84532 transitions. [2021-11-07 02:23:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 02:23:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:07,469 INFO L225 Difference]: With dead ends: 45723 [2021-11-07 02:23:07,469 INFO L226 Difference]: Without dead ends: 30229 [2021-11-07 02:23:07,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30229 states. [2021-11-07 02:23:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30229 to 30214. [2021-11-07 02:23:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30214 states, 30209 states have (on average 1.848257141911351) internal successors, (55834), 30213 states have internal predecessors, (55834), 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 02:23:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30214 states to 30214 states and 55834 transitions. [2021-11-07 02:23:08,790 INFO L78 Accepts]: Start accepts. Automaton has 30214 states and 55834 transitions. Word has length 65 [2021-11-07 02:23:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:08,790 INFO L470 AbstractCegarLoop]: Abstraction has 30214 states and 55834 transitions. [2021-11-07 02:23:08,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30214 states and 55834 transitions. [2021-11-07 02:23:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 02:23:08,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:08,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:08,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 02:23:09,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:09,008 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:23:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1450019831, now seen corresponding path program 1 times [2021-11-07 02:23:09,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:09,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279715235] [2021-11-07 02:23:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:09,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:09,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:09,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:09,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:23:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:09,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:23:09,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:09,841 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 02:23:09,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:10,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:10,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279715235] [2021-11-07 02:23:10,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279715235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:10,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:10,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:23:10,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607273270] [2021-11-07 02:23:10,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:10,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:10,057 INFO L87 Difference]: Start difference. First operand 30214 states and 55834 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:12,792 INFO L93 Difference]: Finished difference Result 82929 states and 153311 transitions. [2021-11-07 02:23:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:12,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 02:23:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:12,882 INFO L225 Difference]: With dead ends: 82929 [2021-11-07 02:23:12,882 INFO L226 Difference]: Without dead ends: 55718 [2021-11-07 02:23:12,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55718 states. [2021-11-07 02:23:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55718 to 55703. [2021-11-07 02:23:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55703 states, 55698 states have (on average 1.84818126324105) internal successors, (102940), 55702 states have internal predecessors, (102940), 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 02:23:15,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55703 states to 55703 states and 102940 transitions. [2021-11-07 02:23:15,725 INFO L78 Accepts]: Start accepts. Automaton has 55703 states and 102940 transitions. Word has length 66 [2021-11-07 02:23:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:15,726 INFO L470 AbstractCegarLoop]: Abstraction has 55703 states and 102940 transitions. [2021-11-07 02:23:15,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 55703 states and 102940 transitions. [2021-11-07 02:23:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:23:15,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:15,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:15,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:15,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:15,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:23:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1339506408, now seen corresponding path program 1 times [2021-11-07 02:23:15,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:15,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599736441] [2021-11-07 02:23:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:15,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:15,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:15,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:23:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:16,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:23:16,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:16,753 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 02:23:16,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:16,960 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 02:23:16,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:16,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599736441] [2021-11-07 02:23:16,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599736441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:16,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:16,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:23:16,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113847915] [2021-11-07 02:23:16,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:16,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:16,963 INFO L87 Difference]: Start difference. First operand 55703 states and 102940 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 02:23:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:21,807 INFO L93 Difference]: Finished difference Result 156983 states and 290082 transitions. [2021-11-07 02:23:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:21,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 67 [2021-11-07 02:23:21,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:22,164 INFO L225 Difference]: With dead ends: 156983 [2021-11-07 02:23:22,164 INFO L226 Difference]: Without dead ends: 106291 [2021-11-07 02:23:22,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2021-11-07 02:23:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 106276. [2021-11-07 02:23:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106276 states, 106271 states have (on average 1.8470890459297455) internal successors, (196292), 106275 states have internal predecessors, (196292), 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 02:23:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106276 states to 106276 states and 196292 transitions. [2021-11-07 02:23:27,672 INFO L78 Accepts]: Start accepts. Automaton has 106276 states and 196292 transitions. Word has length 67 [2021-11-07 02:23:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:27,672 INFO L470 AbstractCegarLoop]: Abstraction has 106276 states and 196292 transitions. [2021-11-07 02:23:27,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 02:23:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 106276 states and 196292 transitions. [2021-11-07 02:23:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 02:23:27,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:27,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:27,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:27,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:27,875 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:23:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:27,876 INFO L85 PathProgramCache]: Analyzing trace with hash 13381212, now seen corresponding path program 1 times [2021-11-07 02:23:27,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:27,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163511170] [2021-11-07 02:23:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:27,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:27,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:27,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7c6d37-fd1c-43fd-b2b1-b6a2ff9e0a90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:23:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:28,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:23:28,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:28,996 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 02:23:28,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:29,201 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 02:23:29,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:29,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163511170] [2021-11-07 02:23:29,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163511170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:29,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:29,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:23:29,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822236252] [2021-11-07 02:23:29,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:29,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:23:29,203 INFO L87 Difference]: Start difference. First operand 106276 states and 196292 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 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)