./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs --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 3c1b0557200bb93e177956c2673df3bb0520e234 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs --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 3c1b0557200bb93e177956c2673df3bb0520e234 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:50:59,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:50:59,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:51:00,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:51:00,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:51:00,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:51:00,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:51:00,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:51:00,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:51:00,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:51:00,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:51:00,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:51:00,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:51:00,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:51:00,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:51:00,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:51:00,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:51:00,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:51:00,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:51:00,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:51:00,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:51:00,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:51:00,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:51:00,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:51:00,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:51:00,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:51:00,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:51:00,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:51:00,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:51:00,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:51:00,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:51:00,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:51:00,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:51:00,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:51:00,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:51:00,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:51:00,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:51:00,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:51:00,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:51:00,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:51:00,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:51:00,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:51:00,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:51:00,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:51:00,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:51:00,198 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:51:00,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:51:00,199 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:51:00,199 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:51:00,200 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:51:00,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:51:00,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:51:00,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:51:00,210 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:51:00,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:51:00,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:51:00,211 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:51:00,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:51:00,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:51:00,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:51:00,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:51:00,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:51:00,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:51:00,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:51:00,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:51:00,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:51:00,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:51:00,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:51:00,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:51:00,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:51:00,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:51:00,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:51:00,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:51:00,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:51:00,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:51:00,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:51:00,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:51:00,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:51:00,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:51:00,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:51:00,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:51:00,244 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_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1b0557200bb93e177956c2673df3bb0520e234 [2021-10-16 02:51:00,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:51:00,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:51:00,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:51:00,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:51:00,608 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:51:00,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2021-10-16 02:51:00,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/eeeeab9e3/22510575a5994e25a338d0c017a3eaf0/FLAG2b266ed3a [2021-10-16 02:51:01,325 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:51:01,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2021-10-16 02:51:01,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/eeeeab9e3/22510575a5994e25a338d0c017a3eaf0/FLAG2b266ed3a [2021-10-16 02:51:01,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/eeeeab9e3/22510575a5994e25a338d0c017a3eaf0 [2021-10-16 02:51:01,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:51:01,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:51:01,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:51:01,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:51:01,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:51:01,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:51:01" (1/1) ... [2021-10-16 02:51:01,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a31ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:01, skipping insertion in model container [2021-10-16 02:51:01,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:51:01" (1/1) ... [2021-10-16 02:51:01,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:51:01,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:51:02,047 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_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2021-10-16 02:51:02,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:51:02,099 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:51:02,170 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_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2021-10-16 02:51:02,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:51:02,205 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:51:02,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02 WrapperNode [2021-10-16 02:51:02,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:51:02,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:51:02,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:51:02,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:51:02,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:51:02,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:51:02,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:51:02,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:51:02,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:51:02,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:51:02,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:51:02,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:51:02,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (1/1) ... [2021-10-16 02:51:02,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:51:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:02,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:51:02,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:51:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:51:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:51:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:51:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:51:02,616 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:51:03,325 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:51:03,333 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:51:03,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:51:03,867 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:51:03,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:51:03 BoogieIcfgContainer [2021-10-16 02:51:03,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:51:03,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:51:03,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:51:03,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:51:03,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:51:01" (1/3) ... [2021-10-16 02:51:03,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442e301f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:51:03, skipping insertion in model container [2021-10-16 02:51:03,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:02" (2/3) ... [2021-10-16 02:51:03,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442e301f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:51:03, skipping insertion in model container [2021-10-16 02:51:03,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:51:03" (3/3) ... [2021-10-16 02:51:03,892 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2021-10-16 02:51:03,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:51:03,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:51:03,966 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:51:03,975 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, mConcurrency=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 [2021-10-16 02:51:03,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:51:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 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) [2021-10-16 02:51:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:51:04,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:04,012 INFO L512 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] [2021-10-16 02:51:04,013 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash 476202738, now seen corresponding path program 1 times [2021-10-16 02:51:04,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:04,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880403906] [2021-10-16 02:51:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:04,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:04,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:04,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880403906] [2021-10-16 02:51:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880403906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:04,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:04,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:51:04,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411920664] [2021-10-16 02:51:04,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:04,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:04,412 INFO L87 Difference]: Start difference. First operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 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 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2021-10-16 02:51:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:04,749 INFO L93 Difference]: Finished difference Result 227 states and 396 transitions. [2021-10-16 02:51:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:04,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-16 02:51:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:04,773 INFO L225 Difference]: With dead ends: 227 [2021-10-16 02:51:04,773 INFO L226 Difference]: Without dead ends: 119 [2021-10-16 02:51:04,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-16 02:51:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-10-16 02:51:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.4827586206896552) internal successors, (172), 116 states have internal predecessors, (172), 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) [2021-10-16 02:51:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 172 transitions. [2021-10-16 02:51:04,870 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 172 transitions. Word has length 39 [2021-10-16 02:51:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:04,871 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 172 transitions. [2021-10-16 02:51:04,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2021-10-16 02:51:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 172 transitions. [2021-10-16 02:51:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 02:51:04,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:04,879 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:04,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:51:04,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2063370417, now seen corresponding path program 1 times [2021-10-16 02:51:04,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:04,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141710021] [2021-10-16 02:51:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:04,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:05,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:05,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141710021] [2021-10-16 02:51:05,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141710021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:05,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:05,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:51:05,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422306324] [2021-10-16 02:51:05,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:05,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:05,031 INFO L87 Difference]: Start difference. First operand 117 states and 172 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:51:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:05,204 INFO L93 Difference]: Finished difference Result 253 states and 378 transitions. [2021-10-16 02:51:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:05,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-16 02:51:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:05,207 INFO L225 Difference]: With dead ends: 253 [2021-10-16 02:51:05,208 INFO L226 Difference]: Without dead ends: 138 [2021-10-16 02:51:05,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-16 02:51:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-10-16 02:51:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4370370370370371) internal successors, (194), 135 states have internal predecessors, (194), 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) [2021-10-16 02:51:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2021-10-16 02:51:05,225 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 53 [2021-10-16 02:51:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:05,225 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2021-10-16 02:51:05,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:51:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2021-10-16 02:51:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-16 02:51:05,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:05,230 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:05,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:51:05,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1416813342, now seen corresponding path program 1 times [2021-10-16 02:51:05,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:05,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763437015] [2021-10-16 02:51:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:05,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:51:05,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:05,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763437015] [2021-10-16 02:51:05,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763437015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:05,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:05,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:51:05,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326063802] [2021-10-16 02:51:05,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:51:05,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:51:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:05,400 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand has 4 states, 4 states have (on average 15.25) 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) [2021-10-16 02:51:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:05,695 INFO L93 Difference]: Finished difference Result 314 states and 465 transitions. [2021-10-16 02:51:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:51:05,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) 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 70 [2021-10-16 02:51:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:05,702 INFO L225 Difference]: With dead ends: 314 [2021-10-16 02:51:05,702 INFO L226 Difference]: Without dead ends: 180 [2021-10-16 02:51:05,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-16 02:51:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2021-10-16 02:51:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3641618497109826) internal successors, (236), 173 states have internal predecessors, (236), 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) [2021-10-16 02:51:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 236 transitions. [2021-10-16 02:51:05,750 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 236 transitions. Word has length 70 [2021-10-16 02:51:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:05,751 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 236 transitions. [2021-10-16 02:51:05,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) 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) [2021-10-16 02:51:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 236 transitions. [2021-10-16 02:51:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-16 02:51:05,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:05,754 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:05,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:51:05,755 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:05,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2094764453, now seen corresponding path program 1 times [2021-10-16 02:51:05,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:05,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384191547] [2021-10-16 02:51:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:05,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:51:05,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:05,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384191547] [2021-10-16 02:51:05,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384191547] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:05,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:05,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:51:05,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502612469] [2021-10-16 02:51:05,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:05,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:05,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:05,862 INFO L87 Difference]: Start difference. First operand 174 states and 236 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2021-10-16 02:51:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:06,048 INFO L93 Difference]: Finished difference Result 379 states and 528 transitions. [2021-10-16 02:51:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:06,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 89 [2021-10-16 02:51:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:06,052 INFO L225 Difference]: With dead ends: 379 [2021-10-16 02:51:06,052 INFO L226 Difference]: Without dead ends: 207 [2021-10-16 02:51:06,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-16 02:51:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2021-10-16 02:51:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.336734693877551) internal successors, (262), 196 states have internal predecessors, (262), 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) [2021-10-16 02:51:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2021-10-16 02:51:06,068 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 262 transitions. Word has length 89 [2021-10-16 02:51:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:06,069 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 262 transitions. [2021-10-16 02:51:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2021-10-16 02:51:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 262 transitions. [2021-10-16 02:51:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-16 02:51:06,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:06,073 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:06,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:51:06,073 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1449129261, now seen corresponding path program 1 times [2021-10-16 02:51:06,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:06,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039681606] [2021-10-16 02:51:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:06,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:06,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:06,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039681606] [2021-10-16 02:51:06,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039681606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:51:06,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562442095] [2021-10-16 02:51:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:06,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:06,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:06,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:51:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:06,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:51:06,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:07,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-16 02:51:07,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562442095] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:51:07,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:51:07,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2021-10-16 02:51:07,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285973405] [2021-10-16 02:51:07,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:07,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:51:07,617 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 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) [2021-10-16 02:51:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:07,646 INFO L93 Difference]: Finished difference Result 391 states and 521 transitions. [2021-10-16 02:51:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:07,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 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 108 [2021-10-16 02:51:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:07,652 INFO L225 Difference]: With dead ends: 391 [2021-10-16 02:51:07,653 INFO L226 Difference]: Without dead ends: 389 [2021-10-16 02:51:07,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:51:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-16 02:51:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2021-10-16 02:51:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.3385012919896642) internal successors, (518), 387 states have internal predecessors, (518), 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) [2021-10-16 02:51:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 518 transitions. [2021-10-16 02:51:07,693 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 518 transitions. Word has length 108 [2021-10-16 02:51:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:07,700 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 518 transitions. [2021-10-16 02:51:07,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 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) [2021-10-16 02:51:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 518 transitions. [2021-10-16 02:51:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-16 02:51:07,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:07,731 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:07,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:07,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:07,932 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:07,933 INFO L82 PathProgramCache]: Analyzing trace with hash -986809054, now seen corresponding path program 1 times [2021-10-16 02:51:07,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:07,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906178667] [2021-10-16 02:51:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:07,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:07,973 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:51:07,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625702364] [2021-10-16 02:51:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:07,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:07,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:07,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:08,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:51:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:08,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:08,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:51:08,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:51:09,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:09,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906178667] [2021-10-16 02:51:09,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:51:09,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625702364] [2021-10-16 02:51:09,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625702364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:09,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:09,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:51:09,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112012797] [2021-10-16 02:51:09,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:51:09,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:51:09,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:09,035 INFO L87 Difference]: Start difference. First operand 388 states and 518 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-10-16 02:51:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:09,258 INFO L93 Difference]: Finished difference Result 874 states and 1210 transitions. [2021-10-16 02:51:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:51:09,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 142 [2021-10-16 02:51:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:09,263 INFO L225 Difference]: With dead ends: 874 [2021-10-16 02:51:09,264 INFO L226 Difference]: Without dead ends: 488 [2021-10-16 02:51:09,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-16 02:51:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 466. [2021-10-16 02:51:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.3075268817204302) internal successors, (608), 465 states have internal predecessors, (608), 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) [2021-10-16 02:51:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 608 transitions. [2021-10-16 02:51:09,310 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 608 transitions. Word has length 142 [2021-10-16 02:51:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:09,310 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 608 transitions. [2021-10-16 02:51:09,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-10-16 02:51:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 608 transitions. [2021-10-16 02:51:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-16 02:51:09,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:09,318 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:09,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:09,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:09,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:09,524 INFO L82 PathProgramCache]: Analyzing trace with hash -398920038, now seen corresponding path program 1 times [2021-10-16 02:51:09,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:09,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032282206] [2021-10-16 02:51:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:09,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:09,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:51:09,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490716670] [2021-10-16 02:51:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:09,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:09,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:09,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:09,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:51:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:09,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:51:09,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-10-16 02:51:10,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-10-16 02:51:10,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:10,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032282206] [2021-10-16 02:51:10,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:51:10,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490716670] [2021-10-16 02:51:10,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490716670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:10,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:10,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:10,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376795988] [2021-10-16 02:51:10,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:10,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:10,810 INFO L87 Difference]: Start difference. First operand 466 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-10-16 02:51:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:10,990 INFO L93 Difference]: Finished difference Result 994 states and 1330 transitions. [2021-10-16 02:51:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:10,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 147 [2021-10-16 02:51:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:10,995 INFO L225 Difference]: With dead ends: 994 [2021-10-16 02:51:10,996 INFO L226 Difference]: Without dead ends: 530 [2021-10-16 02:51:10,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-16 02:51:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 516. [2021-10-16 02:51:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.2893203883495146) internal successors, (664), 515 states have internal predecessors, (664), 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) [2021-10-16 02:51:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 664 transitions. [2021-10-16 02:51:11,042 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 664 transitions. Word has length 147 [2021-10-16 02:51:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:11,043 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 664 transitions. [2021-10-16 02:51:11,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-10-16 02:51:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 664 transitions. [2021-10-16 02:51:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-10-16 02:51:11,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:11,047 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:11,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:11,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:11,271 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:11,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:11,272 INFO L82 PathProgramCache]: Analyzing trace with hash 302696807, now seen corresponding path program 1 times [2021-10-16 02:51:11,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:11,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137010328] [2021-10-16 02:51:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:11,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:11,298 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:51:11,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824571840] [2021-10-16 02:51:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:11,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:11,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:11,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:11,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:51:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:11,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:11,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:51:12,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:51:12,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:12,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137010328] [2021-10-16 02:51:12,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:51:12,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824571840] [2021-10-16 02:51:12,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824571840] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:12,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:12,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:51:12,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974935243] [2021-10-16 02:51:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:51:12,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:51:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:12,641 INFO L87 Difference]: Start difference. First operand 516 states and 664 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-10-16 02:51:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:12,940 INFO L93 Difference]: Finished difference Result 1136 states and 1508 transitions. [2021-10-16 02:51:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:51:12,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 151 [2021-10-16 02:51:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:12,946 INFO L225 Difference]: With dead ends: 1136 [2021-10-16 02:51:12,947 INFO L226 Difference]: Without dead ends: 620 [2021-10-16 02:51:12,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-16 02:51:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 610. [2021-10-16 02:51:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.3431855500821017) internal successors, (818), 609 states have internal predecessors, (818), 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) [2021-10-16 02:51:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 818 transitions. [2021-10-16 02:51:12,979 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 818 transitions. Word has length 151 [2021-10-16 02:51:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:12,979 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 818 transitions. [2021-10-16 02:51:12,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-10-16 02:51:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 818 transitions. [2021-10-16 02:51:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-16 02:51:12,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:12,984 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:13,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:13,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:13,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1644055943, now seen corresponding path program 1 times [2021-10-16 02:51:13,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:13,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146429749] [2021-10-16 02:51:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:13,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-16 02:51:13,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:13,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146429749] [2021-10-16 02:51:13,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146429749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:13,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:13,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:51:13,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054853679] [2021-10-16 02:51:13,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:13,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:13,323 INFO L87 Difference]: Start difference. First operand 610 states and 818 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-16 02:51:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:13,499 INFO L93 Difference]: Finished difference Result 1276 states and 1732 transitions. [2021-10-16 02:51:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 169 [2021-10-16 02:51:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:13,505 INFO L225 Difference]: With dead ends: 1276 [2021-10-16 02:51:13,505 INFO L226 Difference]: Without dead ends: 668 [2021-10-16 02:51:13,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-16 02:51:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 664. [2021-10-16 02:51:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.3242835595776772) internal successors, (878), 663 states have internal predecessors, (878), 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) [2021-10-16 02:51:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 878 transitions. [2021-10-16 02:51:13,538 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 878 transitions. Word has length 169 [2021-10-16 02:51:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:13,539 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 878 transitions. [2021-10-16 02:51:13,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-16 02:51:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 878 transitions. [2021-10-16 02:51:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-16 02:51:13,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:13,543 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:13,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:51:13,545 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash 11192887, now seen corresponding path program 1 times [2021-10-16 02:51:13,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:13,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434421717] [2021-10-16 02:51:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:13,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-16 02:51:13,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:13,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434421717] [2021-10-16 02:51:13,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434421717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:13,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:13,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:51:13,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481417252] [2021-10-16 02:51:13,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:13,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:13,644 INFO L87 Difference]: Start difference. First operand 664 states and 878 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-16 02:51:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:13,814 INFO L93 Difference]: Finished difference Result 1384 states and 1856 transitions. [2021-10-16 02:51:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 173 [2021-10-16 02:51:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:13,821 INFO L225 Difference]: With dead ends: 1384 [2021-10-16 02:51:13,821 INFO L226 Difference]: Without dead ends: 722 [2021-10-16 02:51:13,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-16 02:51:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-10-16 02:51:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.3065187239944522) internal successors, (942), 721 states have internal predecessors, (942), 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) [2021-10-16 02:51:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 942 transitions. [2021-10-16 02:51:13,882 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 942 transitions. Word has length 173 [2021-10-16 02:51:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:13,883 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 942 transitions. [2021-10-16 02:51:13,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-16 02:51:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 942 transitions. [2021-10-16 02:51:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-10-16 02:51:13,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:13,888 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:13,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:51:13,889 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1827279585, now seen corresponding path program 1 times [2021-10-16 02:51:13,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:13,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375370940] [2021-10-16 02:51:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:13,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:13,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:51:13,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223947823] [2021-10-16 02:51:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:13,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:13,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:13,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:13,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:51:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:14,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:51:14,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-16 02:51:15,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-16 02:51:15,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:15,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375370940] [2021-10-16 02:51:15,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:51:15,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223947823] [2021-10-16 02:51:15,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223947823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:15,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:15,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-10-16 02:51:15,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100549955] [2021-10-16 02:51:15,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:51:15,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:51:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:51:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:51:15,727 INFO L87 Difference]: Start difference. First operand 722 states and 942 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2021-10-16 02:51:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:16,205 INFO L93 Difference]: Finished difference Result 1570 states and 2105 transitions. [2021-10-16 02:51:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:51:16,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 200 [2021-10-16 02:51:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:16,213 INFO L225 Difference]: With dead ends: 1570 [2021-10-16 02:51:16,213 INFO L226 Difference]: Without dead ends: 768 [2021-10-16 02:51:16,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:51:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-10-16 02:51:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 743. [2021-10-16 02:51:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.2938005390835579) internal successors, (960), 742 states have internal predecessors, (960), 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) [2021-10-16 02:51:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 960 transitions. [2021-10-16 02:51:16,247 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 960 transitions. Word has length 200 [2021-10-16 02:51:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:16,248 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 960 transitions. [2021-10-16 02:51:16,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2021-10-16 02:51:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 960 transitions. [2021-10-16 02:51:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-16 02:51:16,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:16,254 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:16,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-16 02:51:16,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-16 02:51:16,471 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1562803822, now seen corresponding path program 1 times [2021-10-16 02:51:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:51:16,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930785498] [2021-10-16 02:51:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:16,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:51:16,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:51:16,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652262759] [2021-10-16 02:51:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:16,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:16,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:16,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:51:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:17,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:51:17,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 02:51:17,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-16 02:51:18,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:51:18,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930785498] [2021-10-16 02:51:18,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:51:18,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652262759] [2021-10-16 02:51:18,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652262759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:51:18,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [673022460] [2021-10-16 02:51:18,456 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-10-16 02:51:18,456 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:51:18,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:51:18,475 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:51:18,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:51:27,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:51:27,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:51:27,591 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:51:27,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:51:27,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 367 [2021-10-16 02:51:27,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:51:27,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:51:27,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:51:27,724 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:51:27,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:51:27,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:51:27,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:51:27,776 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:51:27,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:51:27,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:51:27,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:51:27,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:27,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:51:27,826 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:51:27,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:51:28,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:51:28,122 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-16 02:51:28,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1023 [2021-10-16 02:51:28,158 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 02:51:28,158 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1032, output treesize:1023 [2021-10-16 02:51:28,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:28,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-16 02:51:28,384 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_18| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:51:28,388 INFO L168 Benchmark]: Toolchain (without parser) took 26730.24 ms. Allocated memory was 96.5 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 52.3 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 246.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:51:28,388 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 96.5 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:51:28,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.21 ms. Allocated memory is still 96.5 MB. Free memory was 52.0 MB in the beginning and 66.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:51:28,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.32 ms. Allocated memory is still 96.5 MB. Free memory was 66.6 MB in the beginning and 64.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:51:28,390 INFO L168 Benchmark]: Boogie Preprocessor took 63.86 ms. Allocated memory is still 96.5 MB. Free memory was 63.6 MB in the beginning and 61.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:51:28,390 INFO L168 Benchmark]: RCFGBuilder took 1516.27 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.5 MB in the beginning and 81.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:51:28,391 INFO L168 Benchmark]: TraceAbstraction took 24512.53 ms. Allocated memory was 125.8 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 81.2 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 245.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:51:28,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 96.5 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 543.21 ms. Allocated memory is still 96.5 MB. Free memory was 52.0 MB in the beginning and 66.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.32 ms. Allocated memory is still 96.5 MB. Free memory was 66.6 MB in the beginning and 64.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.86 ms. Allocated memory is still 96.5 MB. Free memory was 63.6 MB in the beginning and 61.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1516.27 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.5 MB in the beginning and 81.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24512.53 ms. Allocated memory was 125.8 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 81.2 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 245.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:51:28,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:51:31,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:51:31,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:51:31,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:51:31,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:51:31,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:51:31,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:51:31,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:51:31,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:51:31,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:51:31,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:51:31,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:51:31,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:51:31,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:51:31,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:51:31,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:51:31,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:51:31,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:51:31,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:51:31,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:51:31,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:51:31,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:51:31,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:51:31,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:51:31,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:51:31,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:51:31,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:51:31,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:51:31,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:51:31,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:51:31,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:51:31,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:51:31,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:51:31,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:51:31,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:51:31,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:51:31,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:51:31,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:51:31,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:51:31,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:51:31,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:51:31,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:51:31,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:51:31,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:51:31,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:51:31,412 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:51:31,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:51:31,412 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:51:31,413 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:51:31,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:51:31,413 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:51:31,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:51:31,416 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:51:31,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:51:31,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:51:31,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:51:31,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:51:31,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:51:31,418 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:51:31,418 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:51:31,419 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:51:31,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:51:31,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:51:31,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:51:31,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:51:31,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:51:31,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:51:31,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:51:31,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:51:31,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:51:31,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:51:31,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:51:31,422 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:51:31,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:51:31,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:51:31,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:51:31,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:51:31,424 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_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1b0557200bb93e177956c2673df3bb0520e234 [2021-10-16 02:51:31,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:51:31,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:51:31,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:51:31,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:51:31,992 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:51:31,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2021-10-16 02:51:32,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/d18ba9d6d/0ff51ac3bc984e65b8bb65f365092fa5/FLAG29cf29386 [2021-10-16 02:51:32,710 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:51:32,723 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2021-10-16 02:51:32,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/d18ba9d6d/0ff51ac3bc984e65b8bb65f365092fa5/FLAG29cf29386 [2021-10-16 02:51:33,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/data/d18ba9d6d/0ff51ac3bc984e65b8bb65f365092fa5 [2021-10-16 02:51:33,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:51:33,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:51:33,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:51:33,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:51:33,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:51:33,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e2ef29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33, skipping insertion in model container [2021-10-16 02:51:33,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:51:33,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:51:33,365 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_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2021-10-16 02:51:33,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:51:33,413 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:51:33,529 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_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2021-10-16 02:51:33,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:51:33,550 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:51:33,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33 WrapperNode [2021-10-16 02:51:33,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:51:33,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:51:33,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:51:33,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:51:33,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:51:33,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:51:33,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:51:33,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:51:33,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:51:33,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:51:33,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:51:33,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:51:33,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (1/1) ... [2021-10-16 02:51:33,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:51:33,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:33,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:51:33,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:51:33,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:51:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:51:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:51:33,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:51:34,010 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:51:34,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:51:34,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:51:34,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:51:34,704 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:51:34,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:51:34 BoogieIcfgContainer [2021-10-16 02:51:34,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:51:34,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:51:34,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:51:34,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:51:34,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:51:33" (1/3) ... [2021-10-16 02:51:34,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e9ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:51:34, skipping insertion in model container [2021-10-16 02:51:34,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:51:33" (2/3) ... [2021-10-16 02:51:34,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e9ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:51:34, skipping insertion in model container [2021-10-16 02:51:34,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:51:34" (3/3) ... [2021-10-16 02:51:34,718 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2021-10-16 02:51:34,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:51:34,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:51:34,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:51:34,798 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, mConcurrency=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 [2021-10-16 02:51:34,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:51:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 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) [2021-10-16 02:51:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 02:51:34,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:34,842 INFO L512 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] [2021-10-16 02:51:34,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:34,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1632003015, now seen corresponding path program 1 times [2021-10-16 02:51:34,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:34,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833292538] [2021-10-16 02:51:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:34,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:34,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:34,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:51:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:35,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:51:35,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:35,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:35,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:35,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833292538] [2021-10-16 02:51:35,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833292538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:35,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:35,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:35,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892173396] [2021-10-16 02:51:35,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:35,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:35,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:35,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:35,860 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 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 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:51:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:36,233 INFO L93 Difference]: Finished difference Result 284 states and 484 transitions. [2021-10-16 02:51:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:36,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-16 02:51:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:36,257 INFO L225 Difference]: With dead ends: 284 [2021-10-16 02:51:36,257 INFO L226 Difference]: Without dead ends: 128 [2021-10-16 02:51:36,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-16 02:51:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2021-10-16 02:51:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4919354838709677) internal successors, (185), 124 states have internal predecessors, (185), 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) [2021-10-16 02:51:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2021-10-16 02:51:36,340 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 44 [2021-10-16 02:51:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:36,342 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2021-10-16 02:51:36,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:51:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2021-10-16 02:51:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 02:51:36,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:36,351 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:36,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:36,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:36,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:36,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1722912794, now seen corresponding path program 1 times [2021-10-16 02:51:36,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:36,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357435012] [2021-10-16 02:51:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:36,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:36,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:36,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:36,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:51:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:36,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:36,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:36,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:51:37,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:37,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357435012] [2021-10-16 02:51:37,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357435012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:37,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:37,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:37,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847765177] [2021-10-16 02:51:37,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:37,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:37,177 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-10-16 02:51:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:37,406 INFO L93 Difference]: Finished difference Result 256 states and 386 transitions. [2021-10-16 02:51:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 [2021-10-16 02:51:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:37,409 INFO L225 Difference]: With dead ends: 256 [2021-10-16 02:51:37,410 INFO L226 Difference]: Without dead ends: 150 [2021-10-16 02:51:37,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-16 02:51:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2021-10-16 02:51:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4551724137931035) internal successors, (211), 145 states have internal predecessors, (211), 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) [2021-10-16 02:51:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 211 transitions. [2021-10-16 02:51:37,427 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 211 transitions. Word has length 60 [2021-10-16 02:51:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 211 transitions. [2021-10-16 02:51:37,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-10-16 02:51:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 211 transitions. [2021-10-16 02:51:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:51:37,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:37,432 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:37,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:37,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:37,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1797387181, now seen corresponding path program 1 times [2021-10-16 02:51:37,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:37,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159500678] [2021-10-16 02:51:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:37,655 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:37,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:37,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:37,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:51:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:37,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:37,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:51:38,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:51:38,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:38,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159500678] [2021-10-16 02:51:38,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159500678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:38,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:38,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:38,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960226637] [2021-10-16 02:51:38,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:38,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:38,383 INFO L87 Difference]: Start difference. First operand 146 states and 211 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-16 02:51:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:38,611 INFO L93 Difference]: Finished difference Result 300 states and 441 transitions. [2021-10-16 02:51:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:38,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2021-10-16 02:51:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:38,614 INFO L225 Difference]: With dead ends: 300 [2021-10-16 02:51:38,614 INFO L226 Difference]: Without dead ends: 173 [2021-10-16 02:51:38,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-16 02:51:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2021-10-16 02:51:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4201183431952662) internal successors, (240), 169 states have internal predecessors, (240), 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) [2021-10-16 02:51:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2021-10-16 02:51:38,630 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 81 [2021-10-16 02:51:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:38,630 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2021-10-16 02:51:38,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-16 02:51:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2021-10-16 02:51:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:51:38,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:38,643 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:38,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:38,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:38,859 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:38,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:38,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2045533675, now seen corresponding path program 1 times [2021-10-16 02:51:38,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:38,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461790709] [2021-10-16 02:51:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:38,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:38,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:38,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:51:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:39,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:39,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:51:39,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:51:39,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:39,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461790709] [2021-10-16 02:51:39,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461790709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:39,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:39,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:39,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606076096] [2021-10-16 02:51:39,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:39,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:39,689 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-16 02:51:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:39,935 INFO L93 Difference]: Finished difference Result 366 states and 534 transitions. [2021-10-16 02:51:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:39,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2021-10-16 02:51:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:39,938 INFO L225 Difference]: With dead ends: 366 [2021-10-16 02:51:39,938 INFO L226 Difference]: Without dead ends: 215 [2021-10-16 02:51:39,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-16 02:51:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2021-10-16 02:51:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.361904761904762) internal successors, (286), 210 states have internal predecessors, (286), 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) [2021-10-16 02:51:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 286 transitions. [2021-10-16 02:51:39,959 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 286 transitions. Word has length 81 [2021-10-16 02:51:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:39,960 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 286 transitions. [2021-10-16 02:51:39,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-16 02:51:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 286 transitions. [2021-10-16 02:51:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 02:51:39,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:39,966 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:39,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:51:40,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:40,181 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:40,182 INFO L82 PathProgramCache]: Analyzing trace with hash 755662145, now seen corresponding path program 1 times [2021-10-16 02:51:40,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:40,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796439472] [2021-10-16 02:51:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:40,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:40,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:40,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:40,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:51:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:40,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:40,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:51:40,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:51:41,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:41,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796439472] [2021-10-16 02:51:41,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796439472] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:41,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:41,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:41,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129936753] [2021-10-16 02:51:41,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:41,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:41,140 INFO L87 Difference]: Start difference. First operand 211 states and 286 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-16 02:51:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:41,365 INFO L93 Difference]: Finished difference Result 440 states and 610 transitions. [2021-10-16 02:51:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 101 [2021-10-16 02:51:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:41,373 INFO L225 Difference]: With dead ends: 440 [2021-10-16 02:51:41,373 INFO L226 Difference]: Without dead ends: 248 [2021-10-16 02:51:41,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-16 02:51:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 236. [2021-10-16 02:51:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3446808510638297) internal successors, (316), 235 states have internal predecessors, (316), 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) [2021-10-16 02:51:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2021-10-16 02:51:41,393 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 316 transitions. Word has length 101 [2021-10-16 02:51:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:41,393 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 316 transitions. [2021-10-16 02:51:41,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-16 02:51:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 316 transitions. [2021-10-16 02:51:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 02:51:41,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:41,395 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:41,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:41,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:41,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:41,596 INFO L82 PathProgramCache]: Analyzing trace with hash -687746511, now seen corresponding path program 1 times [2021-10-16 02:51:41,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:41,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253032656] [2021-10-16 02:51:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:41,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:41,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:41,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:51:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:41,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:41,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:51:42,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:51:42,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:42,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253032656] [2021-10-16 02:51:42,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253032656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:42,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:42,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:42,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879139618] [2021-10-16 02:51:42,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:42,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:42,846 INFO L87 Difference]: Start difference. First operand 236 states and 316 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-10-16 02:51:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:42,939 INFO L93 Difference]: Finished difference Result 666 states and 899 transitions. [2021-10-16 02:51:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 121 [2021-10-16 02:51:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:42,944 INFO L225 Difference]: With dead ends: 666 [2021-10-16 02:51:42,944 INFO L226 Difference]: Without dead ends: 449 [2021-10-16 02:51:42,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-10-16 02:51:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-10-16 02:51:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.3415178571428572) internal successors, (601), 448 states have internal predecessors, (601), 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) [2021-10-16 02:51:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 601 transitions. [2021-10-16 02:51:42,972 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 601 transitions. Word has length 121 [2021-10-16 02:51:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:42,973 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 601 transitions. [2021-10-16 02:51:42,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-10-16 02:51:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 601 transitions. [2021-10-16 02:51:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 02:51:42,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:42,981 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:43,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:43,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:43,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:43,197 INFO L82 PathProgramCache]: Analyzing trace with hash 209646767, now seen corresponding path program 1 times [2021-10-16 02:51:43,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:43,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74270904] [2021-10-16 02:51:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:43,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:43,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:43,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:43,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:51:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:43,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:43,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:51:44,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:51:44,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:44,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74270904] [2021-10-16 02:51:44,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74270904] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:44,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:44,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:51:44,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699568422] [2021-10-16 02:51:44,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:51:44,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:44,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:51:44,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:44,410 INFO L87 Difference]: Start difference. First operand 449 states and 601 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2021-10-16 02:51:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:44,526 INFO L93 Difference]: Finished difference Result 1302 states and 1754 transitions. [2021-10-16 02:51:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:51:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 121 [2021-10-16 02:51:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:44,536 INFO L225 Difference]: With dead ends: 1302 [2021-10-16 02:51:44,536 INFO L226 Difference]: Without dead ends: 872 [2021-10-16 02:51:44,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-16 02:51:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-10-16 02:51:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.3432835820895523) internal successors, (1170), 871 states have internal predecessors, (1170), 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) [2021-10-16 02:51:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1170 transitions. [2021-10-16 02:51:44,592 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1170 transitions. Word has length 121 [2021-10-16 02:51:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:44,594 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1170 transitions. [2021-10-16 02:51:44,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2021-10-16 02:51:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1170 transitions. [2021-10-16 02:51:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-16 02:51:44,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:44,605 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:44,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:44,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:44,815 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash -247255522, now seen corresponding path program 1 times [2021-10-16 02:51:44,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:44,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334480188] [2021-10-16 02:51:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:44,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:44,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:44,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:51:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:45,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:45,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:45,851 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:51:45,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:51:46,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:46,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334480188] [2021-10-16 02:51:46,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334480188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:46,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:46,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:51:46,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684217606] [2021-10-16 02:51:46,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:51:46,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:51:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:46,367 INFO L87 Difference]: Start difference. First operand 872 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-16 02:51:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:46,882 INFO L93 Difference]: Finished difference Result 2030 states and 2842 transitions. [2021-10-16 02:51:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:51:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 159 [2021-10-16 02:51:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:46,893 INFO L225 Difference]: With dead ends: 2030 [2021-10-16 02:51:46,893 INFO L226 Difference]: Without dead ends: 1177 [2021-10-16 02:51:46,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-10-16 02:51:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1150. [2021-10-16 02:51:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.370757180156658) internal successors, (1575), 1149 states have internal predecessors, (1575), 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) [2021-10-16 02:51:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1575 transitions. [2021-10-16 02:51:46,948 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1575 transitions. Word has length 159 [2021-10-16 02:51:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:46,949 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1575 transitions. [2021-10-16 02:51:46,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-16 02:51:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1575 transitions. [2021-10-16 02:51:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-16 02:51:46,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:46,954 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:46,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:47,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:47,172 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:47,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1523776844, now seen corresponding path program 1 times [2021-10-16 02:51:47,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:47,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597896197] [2021-10-16 02:51:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:47,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:47,176 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:47,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:51:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:47,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:47,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-10-16 02:51:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-10-16 02:51:48,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:48,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597896197] [2021-10-16 02:51:48,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597896197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:48,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:48,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:48,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920715121] [2021-10-16 02:51:48,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:48,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:48,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:48,794 INFO L87 Difference]: Start difference. First operand 1150 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-10-16 02:51:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:48,911 INFO L93 Difference]: Finished difference Result 2305 states and 3157 transitions. [2021-10-16 02:51:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 166 [2021-10-16 02:51:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:48,921 INFO L225 Difference]: With dead ends: 2305 [2021-10-16 02:51:48,921 INFO L226 Difference]: Without dead ends: 1174 [2021-10-16 02:51:48,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-10-16 02:51:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2021-10-16 02:51:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 1.3674339300937766) internal successors, (1604), 1173 states have internal predecessors, (1604), 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) [2021-10-16 02:51:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1604 transitions. [2021-10-16 02:51:48,974 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1604 transitions. Word has length 166 [2021-10-16 02:51:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:48,975 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1604 transitions. [2021-10-16 02:51:48,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-10-16 02:51:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1604 transitions. [2021-10-16 02:51:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-16 02:51:48,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:48,981 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:49,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:49,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:49,195 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:49,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1259129354, now seen corresponding path program 1 times [2021-10-16 02:51:49,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:49,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803642427] [2021-10-16 02:51:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:49,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:49,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:49,198 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:49,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:51:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:49,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-10-16 02:51:50,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-10-16 02:51:50,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:50,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803642427] [2021-10-16 02:51:50,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803642427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:50,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:50,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:50,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088201753] [2021-10-16 02:51:50,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:50,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:50,901 INFO L87 Difference]: Start difference. First operand 1174 states and 1604 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-10-16 02:51:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:50,990 INFO L93 Difference]: Finished difference Result 2331 states and 3188 transitions. [2021-10-16 02:51:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 166 [2021-10-16 02:51:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:50,999 INFO L225 Difference]: With dead ends: 2331 [2021-10-16 02:51:51,000 INFO L226 Difference]: Without dead ends: 1176 [2021-10-16 02:51:51,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2021-10-16 02:51:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2021-10-16 02:51:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.366808510638298) internal successors, (1606), 1175 states have internal predecessors, (1606), 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) [2021-10-16 02:51:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1606 transitions. [2021-10-16 02:51:51,049 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1606 transitions. Word has length 166 [2021-10-16 02:51:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:51,049 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1606 transitions. [2021-10-16 02:51:51,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-10-16 02:51:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1606 transitions. [2021-10-16 02:51:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-16 02:51:51,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:51,055 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:51,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:51,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:51,273 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:51,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1724564893, now seen corresponding path program 1 times [2021-10-16 02:51:51,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:51,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118968585] [2021-10-16 02:51:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:51,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:51,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:51,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:51:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:51,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:51,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-16 02:51:52,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-16 02:51:53,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:53,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118968585] [2021-10-16 02:51:53,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118968585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:53,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:53,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:53,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849151841] [2021-10-16 02:51:53,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:53,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:53,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:53,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:53,112 INFO L87 Difference]: Start difference. First operand 1176 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-10-16 02:51:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:53,375 INFO L93 Difference]: Finished difference Result 2455 states and 3399 transitions. [2021-10-16 02:51:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:53,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 202 [2021-10-16 02:51:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:53,391 INFO L225 Difference]: With dead ends: 2455 [2021-10-16 02:51:53,391 INFO L226 Difference]: Without dead ends: 1300 [2021-10-16 02:51:53,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-10-16 02:51:53,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2021-10-16 02:51:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.3471901462663587) internal successors, (1750), 1299 states have internal predecessors, (1750), 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) [2021-10-16 02:51:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1750 transitions. [2021-10-16 02:51:53,446 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1750 transitions. Word has length 202 [2021-10-16 02:51:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:53,447 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1750 transitions. [2021-10-16 02:51:53,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-10-16 02:51:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1750 transitions. [2021-10-16 02:51:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-10-16 02:51:53,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:53,453 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:53,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:53,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:53,676 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:53,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:53,676 INFO L82 PathProgramCache]: Analyzing trace with hash 598072934, now seen corresponding path program 1 times [2021-10-16 02:51:53,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:53,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613637311] [2021-10-16 02:51:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:53,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:53,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:53,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:51:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:54,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:54,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 02:51:55,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 02:51:55,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:55,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613637311] [2021-10-16 02:51:55,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613637311] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:55,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:55,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:51:55,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525541021] [2021-10-16 02:51:55,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:51:55,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:51:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:55,737 INFO L87 Difference]: Start difference. First operand 1300 states and 1750 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-10-16 02:51:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:56,167 INFO L93 Difference]: Finished difference Result 2656 states and 3678 transitions. [2021-10-16 02:51:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:51:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 229 [2021-10-16 02:51:56,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:56,183 INFO L225 Difference]: With dead ends: 2656 [2021-10-16 02:51:56,183 INFO L226 Difference]: Without dead ends: 1199 [2021-10-16 02:51:56,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:51:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-10-16 02:51:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1190. [2021-10-16 02:51:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.3650126156433977) internal successors, (1623), 1189 states have internal predecessors, (1623), 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) [2021-10-16 02:51:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1623 transitions. [2021-10-16 02:51:56,239 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1623 transitions. Word has length 229 [2021-10-16 02:51:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:56,239 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 1623 transitions. [2021-10-16 02:51:56,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-10-16 02:51:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1623 transitions. [2021-10-16 02:51:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-10-16 02:51:56,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:56,246 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:56,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:56,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:56,459 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:56,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:56,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1622703552, now seen corresponding path program 1 times [2021-10-16 02:51:56,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:56,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364571324] [2021-10-16 02:51:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:56,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:56,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:56,462 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:56,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:51:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:51:57,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:51:57,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-16 02:51:58,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-16 02:51:59,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:51:59,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364571324] [2021-10-16 02:51:59,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364571324] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:51:59,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:51:59,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:51:59,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91637089] [2021-10-16 02:51:59,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:51:59,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:51:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:51:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:59,473 INFO L87 Difference]: Start difference. First operand 1190 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-10-16 02:51:59,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:51:59,533 INFO L93 Difference]: Finished difference Result 3319 states and 4579 transitions. [2021-10-16 02:51:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:51:59,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 269 [2021-10-16 02:51:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:51:59,543 INFO L225 Difference]: With dead ends: 3319 [2021-10-16 02:51:59,543 INFO L226 Difference]: Without dead ends: 1147 [2021-10-16 02:51:59,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:51:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-10-16 02:51:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2021-10-16 02:51:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.369109947643979) internal successors, (1569), 1146 states have internal predecessors, (1569), 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) [2021-10-16 02:51:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1569 transitions. [2021-10-16 02:51:59,595 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1569 transitions. Word has length 269 [2021-10-16 02:51:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:51:59,595 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1569 transitions. [2021-10-16 02:51:59,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-10-16 02:51:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1569 transitions. [2021-10-16 02:51:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-10-16 02:51:59,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:51:59,603 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:51:59,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:51:59,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:51:59,825 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:51:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:51:59,826 INFO L82 PathProgramCache]: Analyzing trace with hash 746936446, now seen corresponding path program 1 times [2021-10-16 02:51:59,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:51:59,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724969861] [2021-10-16 02:51:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:51:59,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:51:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:51:59,828 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:51:59,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:52:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:01,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:01,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-10-16 02:52:01,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-10-16 02:52:02,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:02,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724969861] [2021-10-16 02:52:02,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724969861] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:02,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:02,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734420978] [2021-10-16 02:52:02,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:02,729 INFO L87 Difference]: Start difference. First operand 1147 states and 1569 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-10-16 02:52:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:02,940 INFO L93 Difference]: Finished difference Result 2375 states and 3281 transitions. [2021-10-16 02:52:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 315 [2021-10-16 02:52:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:02,955 INFO L225 Difference]: With dead ends: 2375 [2021-10-16 02:52:02,955 INFO L226 Difference]: Without dead ends: 1249 [2021-10-16 02:52:02,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-10-16 02:52:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1228. [2021-10-16 02:52:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 1.3569682151589242) internal successors, (1665), 1227 states have internal predecessors, (1665), 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) [2021-10-16 02:52:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1665 transitions. [2021-10-16 02:52:03,038 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1665 transitions. Word has length 315 [2021-10-16 02:52:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:03,038 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 1665 transitions. [2021-10-16 02:52:03,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-10-16 02:52:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1665 transitions. [2021-10-16 02:52:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-10-16 02:52:03,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:03,049 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:03,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:03,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:03,263 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1865013778, now seen corresponding path program 1 times [2021-10-16 02:52:03,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:03,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223182215] [2021-10-16 02:52:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:03,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:03,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:03,266 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:03,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:52:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:04,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:04,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-10-16 02:52:05,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-10-16 02:52:06,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:06,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223182215] [2021-10-16 02:52:06,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223182215] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:06,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:06,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:06,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951908115] [2021-10-16 02:52:06,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:06,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:06,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:06,114 INFO L87 Difference]: Start difference. First operand 1228 states and 1665 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-10-16 02:52:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:06,340 INFO L93 Difference]: Finished difference Result 2528 states and 3455 transitions. [2021-10-16 02:52:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:06,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 338 [2021-10-16 02:52:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:06,356 INFO L225 Difference]: With dead ends: 2528 [2021-10-16 02:52:06,356 INFO L226 Difference]: Without dead ends: 1321 [2021-10-16 02:52:06,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-10-16 02:52:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1315. [2021-10-16 02:52:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.3447488584474885) internal successors, (1767), 1314 states have internal predecessors, (1767), 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) [2021-10-16 02:52:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1767 transitions. [2021-10-16 02:52:06,416 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1767 transitions. Word has length 338 [2021-10-16 02:52:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:06,417 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1767 transitions. [2021-10-16 02:52:06,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-10-16 02:52:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1767 transitions. [2021-10-16 02:52:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-10-16 02:52:06,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:06,428 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:06,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:06,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:06,643 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1876884711, now seen corresponding path program 1 times [2021-10-16 02:52:06,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:06,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951839321] [2021-10-16 02:52:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:06,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:06,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:06,645 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:06,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:52:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:08,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:08,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-10-16 02:52:09,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-10-16 02:52:10,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:10,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951839321] [2021-10-16 02:52:10,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951839321] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:10,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:10,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:10,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666230436] [2021-10-16 02:52:10,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:10,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:10,165 INFO L87 Difference]: Start difference. First operand 1315 states and 1767 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-10-16 02:52:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:10,234 INFO L93 Difference]: Finished difference Result 3897 states and 5242 transitions. [2021-10-16 02:52:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 370 [2021-10-16 02:52:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:10,253 INFO L225 Difference]: With dead ends: 3897 [2021-10-16 02:52:10,253 INFO L226 Difference]: Without dead ends: 2603 [2021-10-16 02:52:10,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-10-16 02:52:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2601. [2021-10-16 02:52:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2600 states have (on average 1.3434615384615385) internal successors, (3493), 2600 states have internal predecessors, (3493), 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) [2021-10-16 02:52:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3493 transitions. [2021-10-16 02:52:10,368 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3493 transitions. Word has length 370 [2021-10-16 02:52:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:10,369 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3493 transitions. [2021-10-16 02:52:10,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-10-16 02:52:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3493 transitions. [2021-10-16 02:52:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-10-16 02:52:10,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:10,377 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:10,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:10,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:10,604 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash -59651589, now seen corresponding path program 1 times [2021-10-16 02:52:10,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:10,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798673718] [2021-10-16 02:52:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:10,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:10,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:10,607 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:10,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:52:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:12,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:52:12,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:52:13,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:52:14,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:14,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798673718] [2021-10-16 02:52:14,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798673718] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:52:14,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582862603] [2021-10-16 02:52:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:14,287 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:52:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:52:14,299 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:52:14,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 02:52:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:16,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:52:16,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:52:17,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:52:18,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1582862603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:52:18,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089637101] [2021-10-16 02:52:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:18,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:52:18,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:52:18,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:52:18,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 02:52:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:20,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:52:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:52:21,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-16 02:52:22,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089637101] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:52:22,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:52:22,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:52:22,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078723822] [2021-10-16 02:52:22,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:52:22,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:22,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:52:22,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:52:22,820 INFO L87 Difference]: Start difference. First operand 2601 states and 3493 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-16 02:52:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:23,183 INFO L93 Difference]: Finished difference Result 7515 states and 9967 transitions. [2021-10-16 02:52:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:52:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 371 [2021-10-16 02:52:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:23,220 INFO L225 Difference]: With dead ends: 7515 [2021-10-16 02:52:23,221 INFO L226 Difference]: Without dead ends: 4935 [2021-10-16 02:52:23,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2222 GetRequests, 2219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:52:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2021-10-16 02:52:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 3243. [2021-10-16 02:52:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 1.3439235040098705) internal successors, (4357), 3242 states have internal predecessors, (4357), 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) [2021-10-16 02:52:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4357 transitions. [2021-10-16 02:52:23,385 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4357 transitions. Word has length 371 [2021-10-16 02:52:23,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:23,386 INFO L470 AbstractCegarLoop]: Abstraction has 3243 states and 4357 transitions. [2021-10-16 02:52:23,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-16 02:52:23,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4357 transitions. [2021-10-16 02:52:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-10-16 02:52:23,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:23,398 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:23,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:23,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:23,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:24,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:24,007 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:24,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1792598736, now seen corresponding path program 1 times [2021-10-16 02:52:24,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:24,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358385510] [2021-10-16 02:52:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:24,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:24,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:24,010 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:24,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:52:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:26,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:26,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 02:52:27,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 02:52:28,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:28,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358385510] [2021-10-16 02:52:28,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358385510] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:28,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:28,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:28,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096828800] [2021-10-16 02:52:28,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:28,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:28,142 INFO L87 Difference]: Start difference. First operand 3243 states and 4357 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2021-10-16 02:52:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:28,367 INFO L93 Difference]: Finished difference Result 6725 states and 9071 transitions. [2021-10-16 02:52:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 401 [2021-10-16 02:52:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:28,391 INFO L225 Difference]: With dead ends: 6725 [2021-10-16 02:52:28,392 INFO L226 Difference]: Without dead ends: 3503 [2021-10-16 02:52:28,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2021-10-16 02:52:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3363. [2021-10-16 02:52:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 1.3405710886377156) internal successors, (4507), 3362 states have internal predecessors, (4507), 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) [2021-10-16 02:52:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4507 transitions. [2021-10-16 02:52:28,553 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4507 transitions. Word has length 401 [2021-10-16 02:52:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:28,554 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 4507 transitions. [2021-10-16 02:52:28,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2021-10-16 02:52:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4507 transitions. [2021-10-16 02:52:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-10-16 02:52:28,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:28,563 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:28,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:28,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:28,787 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash 571180815, now seen corresponding path program 1 times [2021-10-16 02:52:28,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:28,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994134721] [2021-10-16 02:52:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:28,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:28,792 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:28,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 02:52:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:31,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:31,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 02:52:32,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 02:52:33,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:33,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994134721] [2021-10-16 02:52:33,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994134721] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:33,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:33,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:33,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720852783] [2021-10-16 02:52:33,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:33,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:33,365 INFO L87 Difference]: Start difference. First operand 3363 states and 4507 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-10-16 02:52:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:33,567 INFO L93 Difference]: Finished difference Result 7137 states and 9709 transitions. [2021-10-16 02:52:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 402 [2021-10-16 02:52:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:33,595 INFO L225 Difference]: With dead ends: 7137 [2021-10-16 02:52:33,595 INFO L226 Difference]: Without dead ends: 3795 [2021-10-16 02:52:33,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2021-10-16 02:52:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3771. [2021-10-16 02:52:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 3770 states have (on average 1.3196286472148542) internal successors, (4975), 3770 states have internal predecessors, (4975), 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) [2021-10-16 02:52:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4975 transitions. [2021-10-16 02:52:33,756 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4975 transitions. Word has length 402 [2021-10-16 02:52:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:33,757 INFO L470 AbstractCegarLoop]: Abstraction has 3771 states and 4975 transitions. [2021-10-16 02:52:33,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-10-16 02:52:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4975 transitions. [2021-10-16 02:52:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-10-16 02:52:33,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:33,767 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:33,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:33,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:33,975 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1646161403, now seen corresponding path program 1 times [2021-10-16 02:52:33,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:33,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133111863] [2021-10-16 02:52:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:33,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:33,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:33,978 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:33,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:52:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:36,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:36,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 02:52:37,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 02:52:38,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:38,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133111863] [2021-10-16 02:52:38,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133111863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:38,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:38,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:38,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950512168] [2021-10-16 02:52:38,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:38,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:38,750 INFO L87 Difference]: Start difference. First operand 3771 states and 4975 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-10-16 02:52:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:39,023 INFO L93 Difference]: Finished difference Result 7521 states and 9919 transitions. [2021-10-16 02:52:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 433 [2021-10-16 02:52:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:39,041 INFO L225 Difference]: With dead ends: 7521 [2021-10-16 02:52:39,041 INFO L226 Difference]: Without dead ends: 3771 [2021-10-16 02:52:39,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-10-16 02:52:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3309. [2021-10-16 02:52:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.2681378476420797) internal successors, (4195), 3308 states have internal predecessors, (4195), 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) [2021-10-16 02:52:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4195 transitions. [2021-10-16 02:52:39,156 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4195 transitions. Word has length 433 [2021-10-16 02:52:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:39,157 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 4195 transitions. [2021-10-16 02:52:39,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-10-16 02:52:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4195 transitions. [2021-10-16 02:52:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-10-16 02:52:39,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:39,166 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:39,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:39,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:39,383 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:39,384 INFO L82 PathProgramCache]: Analyzing trace with hash 912404788, now seen corresponding path program 1 times [2021-10-16 02:52:39,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:39,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558890553] [2021-10-16 02:52:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:39,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:39,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:39,386 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:39,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:52:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:42,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:52:42,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1351 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-16 02:52:43,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1351 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-16 02:52:44,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:44,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558890553] [2021-10-16 02:52:44,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558890553] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:52:44,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:52:44,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:52:44,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698120454] [2021-10-16 02:52:44,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:52:44,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:52:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:44,528 INFO L87 Difference]: Start difference. First operand 3309 states and 4195 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2021-10-16 02:52:44,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:52:44,812 INFO L93 Difference]: Finished difference Result 6421 states and 8097 transitions. [2021-10-16 02:52:44,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:52:44,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 466 [2021-10-16 02:52:44,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:52:44,821 INFO L225 Difference]: With dead ends: 6421 [2021-10-16 02:52:44,822 INFO L226 Difference]: Without dead ends: 3133 [2021-10-16 02:52:44,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:52:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2021-10-16 02:52:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3117. [2021-10-16 02:52:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3116 states have (on average 1.2102053915275994) internal successors, (3771), 3116 states have internal predecessors, (3771), 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) [2021-10-16 02:52:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 3771 transitions. [2021-10-16 02:52:44,916 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 3771 transitions. Word has length 466 [2021-10-16 02:52:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:52:44,917 INFO L470 AbstractCegarLoop]: Abstraction has 3117 states and 3771 transitions. [2021-10-16 02:52:44,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2021-10-16 02:52:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 3771 transitions. [2021-10-16 02:52:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-10-16 02:52:44,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:52:44,927 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:52:44,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:52:45,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:52:45,151 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:52:45,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:52:45,152 INFO L82 PathProgramCache]: Analyzing trace with hash 325769247, now seen corresponding path program 1 times [2021-10-16 02:52:45,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:52:45,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106609057] [2021-10-16 02:52:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:45,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:52:45,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:52:45,154 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:52:45,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 02:52:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:48,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:52:48,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:52:49,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:52:50,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:52:50,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106609057] [2021-10-16 02:52:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106609057] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:52:50,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2083767214] [2021-10-16 02:52:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:50,742 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:52:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:52:50,744 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:52:50,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-16 02:52:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:52:55,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:52:55,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:52:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:52:56,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:52:57,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2083767214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:52:57,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764888473] [2021-10-16 02:52:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:52:57,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:52:57,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:52:57,617 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:52:57,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-16 02:53:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:53:01,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:53:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:53:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:53:03,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:53:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-16 02:53:04,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764888473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:53:04,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:53:04,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:53:04,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183746142] [2021-10-16 02:53:04,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:53:04,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:53:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:53:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:53:04,394 INFO L87 Difference]: Start difference. First operand 3117 states and 3771 transitions. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2021-10-16 02:53:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:53:04,915 INFO L93 Difference]: Finished difference Result 4438 states and 5392 transitions. [2021-10-16 02:53:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:53:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 504 [2021-10-16 02:53:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:53:04,919 INFO L225 Difference]: With dead ends: 4438 [2021-10-16 02:53:04,920 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:53:04,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3024 GetRequests, 3017 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:53:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:53:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:53:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-16 02:53:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:53:04,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 504 [2021-10-16 02:53:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:53:04,926 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:53:04,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2021-10-16 02:53:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:53:04,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:53:04,930 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:53:04,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:53:05,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-10-16 02:53:05,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:53:05,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:53:05,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:53:05,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:05,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:06,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:53:08,672 INFO L857 garLoopResultBuilder]: For program point L663(lines 663 667) no Hoare annotation was computed. [2021-10-16 02:53:08,672 INFO L857 garLoopResultBuilder]: For program point L630(lines 630 639) no Hoare annotation was computed. [2021-10-16 02:53:08,672 INFO L857 garLoopResultBuilder]: For program point L663-2(lines 663 667) no Hoare annotation was computed. [2021-10-16 02:53:08,672 INFO L857 garLoopResultBuilder]: For program point L630-2(lines 629 651) no Hoare annotation was computed. [2021-10-16 02:53:08,673 INFO L853 garLoopResultBuilder]: At program point L399(lines 390 421) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,673 INFO L853 garLoopResultBuilder]: At program point L168(lines 167 606) the Hoare annotation is: (let ((.cse0 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0))) [2021-10-16 02:53:08,673 INFO L853 garLoopResultBuilder]: At program point L135(lines 128 619) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse1))) [2021-10-16 02:53:08,674 INFO L857 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2021-10-16 02:53:08,674 INFO L857 garLoopResultBuilder]: For program point L367(lines 367 371) no Hoare annotation was computed. [2021-10-16 02:53:08,674 INFO L857 garLoopResultBuilder]: For program point L632(lines 632 636) no Hoare annotation was computed. [2021-10-16 02:53:08,674 INFO L857 garLoopResultBuilder]: For program point L401(lines 401 407) no Hoare annotation was computed. [2021-10-16 02:53:08,674 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 594) no Hoare annotation was computed. [2021-10-16 02:53:08,675 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 605) no Hoare annotation was computed. [2021-10-16 02:53:08,675 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 616) no Hoare annotation was computed. [2021-10-16 02:53:08,675 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 627) no Hoare annotation was computed. [2021-10-16 02:53:08,675 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 472) no Hoare annotation was computed. [2021-10-16 02:53:08,676 INFO L853 garLoopResultBuilder]: At program point L204(lines 200 595) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse0) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0))) [2021-10-16 02:53:08,676 INFO L860 garLoopResultBuilder]: At program point L105(lines 104 627) the Hoare annotation is: true [2021-10-16 02:53:08,676 INFO L857 garLoopResultBuilder]: For program point L503(lines 503 507) no Hoare annotation was computed. [2021-10-16 02:53:08,676 INFO L857 garLoopResultBuilder]: For program point L503-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,676 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 244) no Hoare annotation was computed. [2021-10-16 02:53:08,677 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 593) no Hoare annotation was computed. [2021-10-16 02:53:08,677 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 604) no Hoare annotation was computed. [2021-10-16 02:53:08,677 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 615) no Hoare annotation was computed. [2021-10-16 02:53:08,677 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 626) no Hoare annotation was computed. [2021-10-16 02:53:08,677 INFO L860 garLoopResultBuilder]: At program point L207(lines 206 593) the Hoare annotation is: true [2021-10-16 02:53:08,678 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 605) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,678 INFO L853 garLoopResultBuilder]: At program point L141(lines 137 616) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse1) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,678 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 83) no Hoare annotation was computed. [2021-10-16 02:53:08,678 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 278) no Hoare annotation was computed. [2021-10-16 02:53:08,678 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 312) no Hoare annotation was computed. [2021-10-16 02:53:08,678 INFO L857 garLoopResultBuilder]: For program point L308-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 603) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 614) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 625) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L573(lines 573 583) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L573-1(lines 573 583) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L441-1(lines 441 453) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L860 garLoopResultBuilder]: At program point L210(lines 209 592) the Hoare annotation is: true [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2021-10-16 02:53:08,679 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 75 83) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L853 garLoopResultBuilder]: At program point L409(lines 400 420) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 347) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L343-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L860 garLoopResultBuilder]: At program point L674(lines 66 676) the Hoare annotation is: true [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L641(lines 641 647) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L542(lines 542 547) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 602) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 613) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 624) no Hoare annotation was computed. [2021-10-16 02:53:08,680 INFO L860 garLoopResultBuilder]: At program point L675(lines 11 677) the Hoare annotation is: true [2021-10-16 02:53:08,680 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 580) no Hoare annotation was computed. [2021-10-16 02:53:08,681 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 449) no Hoare annotation was computed. [2021-10-16 02:53:08,681 INFO L853 garLoopResultBuilder]: At program point L180(lines 176 603) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,681 INFO L853 garLoopResultBuilder]: At program point L147(lines 143 614) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,681 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 416) no Hoare annotation was computed. [2021-10-16 02:53:08,681 INFO L860 garLoopResultBuilder]: At program point L214(lines 107 626) the Hoare annotation is: true [2021-10-16 02:53:08,681 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 601) no Hoare annotation was computed. [2021-10-16 02:53:08,681 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 612) no Hoare annotation was computed. [2021-10-16 02:53:08,681 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 623) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L513(lines 513 517) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L480(lines 480 484) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L513-2(lines 513 517) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 93) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 66 676) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 600) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 611) no Hoare annotation was computed. [2021-10-16 02:53:08,682 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 622) no Hoare annotation was computed. [2021-10-16 02:53:08,683 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 90) no Hoare annotation was computed. [2021-10-16 02:53:08,683 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 382) no Hoare annotation was computed. [2021-10-16 02:53:08,683 INFO L857 garLoopResultBuilder]: For program point L318(lines 318 322) no Hoare annotation was computed. [2021-10-16 02:53:08,683 INFO L857 garLoopResultBuilder]: For program point L318-2(lines 318 322) no Hoare annotation was computed. [2021-10-16 02:53:08,683 INFO L857 garLoopResultBuilder]: For program point L219(lines 219 223) no Hoare annotation was computed. [2021-10-16 02:53:08,684 INFO L853 garLoopResultBuilder]: At program point L186(lines 182 601) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,684 INFO L853 garLoopResultBuilder]: At program point L153(lines 149 612) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,684 INFO L857 garLoopResultBuilder]: For program point L219-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,684 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 599) no Hoare annotation was computed. [2021-10-16 02:53:08,685 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 610) no Hoare annotation was computed. [2021-10-16 02:53:08,685 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 621) no Hoare annotation was computed. [2021-10-16 02:53:08,685 INFO L857 garLoopResultBuilder]: For program point L552(lines 552 556) no Hoare annotation was computed. [2021-10-16 02:53:08,685 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 381) no Hoare annotation was computed. [2021-10-16 02:53:08,685 INFO L857 garLoopResultBuilder]: For program point L354-1(lines 354 381) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 622) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:53:08,686 INFO L853 garLoopResultBuilder]: At program point L553(lines 66 676) the Hoare annotation is: false [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 378) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 268) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 262) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 598) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 609) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 620) no Hoare annotation was computed. [2021-10-16 02:53:08,686 INFO L860 garLoopResultBuilder]: At program point L687(lines 678 689) the Hoare annotation is: true [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 421) no Hoare annotation was computed. [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point L291(lines 291 295) no Hoare annotation was computed. [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point L291-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,687 INFO L853 garLoopResultBuilder]: At program point L192(lines 188 599) the Hoare annotation is: (or (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) [2021-10-16 02:53:08,687 INFO L853 garLoopResultBuilder]: At program point L159(lines 155 610) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,687 INFO L853 garLoopResultBuilder]: At program point L126(lines 125 620) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 528) no Hoare annotation was computed. [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point L391(lines 391 397) no Hoare annotation was computed. [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 377) no Hoare annotation was computed. [2021-10-16 02:53:08,687 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L853 garLoopResultBuilder]: At program point L590(lines 101 658) the Hoare annotation is: (let ((.cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse4 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse5 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse3 .cse0 .cse1) (and .cse2 .cse4 .cse1) (and .cse0 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse5 .cse4) (and .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5))) [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 561) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L491(lines 491 495) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 363) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L359-2(lines 358 375) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 597) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 608) no Hoare annotation was computed. [2021-10-16 02:53:08,688 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 619) no Hoare annotation was computed. [2021-10-16 02:53:08,689 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 463) no Hoare annotation was computed. [2021-10-16 02:53:08,689 INFO L857 garLoopResultBuilder]: For program point L327-1(lines 327 336) no Hoare annotation was computed. [2021-10-16 02:53:08,689 INFO L860 garLoopResultBuilder]: At program point L659(lines 100 660) the Hoare annotation is: true [2021-10-16 02:53:08,689 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 596) no Hoare annotation was computed. [2021-10-16 02:53:08,689 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 607) no Hoare annotation was computed. [2021-10-16 02:53:08,689 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 618) no Hoare annotation was computed. [2021-10-16 02:53:08,690 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:53:08,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 670) no Hoare annotation was computed. [2021-10-16 02:53:08,690 INFO L857 garLoopResultBuilder]: For program point L231(lines 231 248) no Hoare annotation was computed. [2021-10-16 02:53:08,690 INFO L853 garLoopResultBuilder]: At program point L198(lines 194 597) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,691 INFO L853 garLoopResultBuilder]: At program point L165(lines 161 608) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,691 INFO L857 garLoopResultBuilder]: For program point L231-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,691 INFO L857 garLoopResultBuilder]: For program point L628(lines 628 656) no Hoare annotation was computed. [2021-10-16 02:53:08,691 INFO L857 garLoopResultBuilder]: For program point L331(lines 331 335) no Hoare annotation was computed. [2021-10-16 02:53:08,691 INFO L857 garLoopResultBuilder]: For program point L629(lines 629 653) no Hoare annotation was computed. [2021-10-16 02:53:08,692 INFO L857 garLoopResultBuilder]: For program point L563(lines 563 567) no Hoare annotation was computed. [2021-10-16 02:53:08,692 INFO L857 garLoopResultBuilder]: For program point L530(lines 530 534) no Hoare annotation was computed. [2021-10-16 02:53:08,692 INFO L857 garLoopResultBuilder]: For program point L563-2(lines 563 567) no Hoare annotation was computed. [2021-10-16 02:53:08,692 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2021-10-16 02:53:08,692 INFO L857 garLoopResultBuilder]: For program point L530-2(lines 211 589) no Hoare annotation was computed. [2021-10-16 02:53:08,692 INFO L857 garLoopResultBuilder]: For program point L431(lines 431 435) no Hoare annotation was computed. [2021-10-16 02:53:08,693 INFO L853 garLoopResultBuilder]: At program point L365(lines 348 383) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-16 02:53:08,693 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 238) no Hoare annotation was computed. [2021-10-16 02:53:08,693 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 595) no Hoare annotation was computed. [2021-10-16 02:53:08,693 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 606) no Hoare annotation was computed. [2021-10-16 02:53:08,694 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 617) no Hoare annotation was computed. [2021-10-16 02:53:08,694 INFO L853 garLoopResultBuilder]: At program point L101-2(lines 101 658) the Hoare annotation is: (let ((.cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse4 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse5 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse3 .cse0 .cse1) (and .cse2 .cse4 .cse1) (and .cse0 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse5 .cse4) (and .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))))) [2021-10-16 02:53:08,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:53:08,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:53:08 BoogieIcfgContainer [2021-10-16 02:53:08,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:53:08,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:53:08,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:53:08,748 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:53:08,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:51:34" (3/4) ... [2021-10-16 02:53:08,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:53:08,785 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:53:08,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:53:08,787 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:53:08,788 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:53:08,938 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:53:08,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:53:08,940 INFO L168 Benchmark]: Toolchain (without parser) took 95907.68 ms. Allocated memory was 60.8 MB in the beginning and 383.8 MB in the end (delta: 323.0 MB). Free memory was 40.3 MB in the beginning and 134.1 MB in the end (delta: -93.7 MB). Peak memory consumption was 228.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,941 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:53:08,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.21 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 41.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.01 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 38.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,943 INFO L168 Benchmark]: Boogie Preprocessor took 105.09 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 36.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,944 INFO L168 Benchmark]: RCFGBuilder took 958.02 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 36.1 MB in the beginning and 52.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,944 INFO L168 Benchmark]: TraceAbstraction took 94037.81 ms. Allocated memory was 86.0 MB in the beginning and 383.8 MB in the end (delta: 297.8 MB). Free memory was 52.4 MB in the beginning and 143.5 MB in the end (delta: -91.1 MB). Peak memory consumption was 246.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,945 INFO L168 Benchmark]: Witness Printer took 190.38 ms. Allocated memory is still 383.8 MB. Free memory was 143.5 MB in the beginning and 134.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:08,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.21 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 41.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.01 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 38.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.09 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 36.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 958.02 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 36.1 MB in the beginning and 52.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94037.81 ms. Allocated memory was 86.0 MB in the beginning and 383.8 MB in the end (delta: 297.8 MB). Free memory was 52.4 MB in the beginning and 143.5 MB in the end (delta: -91.1 MB). Peak memory consumption was 246.3 MB. Max. memory is 16.1 GB. * Witness Printer took 190.38 ms. Allocated memory is still 383.8 MB. Free memory was 143.5 MB in the beginning and 134.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 670]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 93912.8ms, OverallIterations: 22, TraceHistogramMax: 16, EmptinessCheckTime: 157.2ms, AutomataDifference: 5790.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3123.7ms, InitialAbstractionConstructionTime: 21.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4231 SDtfs, 1437 SDslu, 3047 SDs, 0 SdLazy, 2376 SolverSat, 433 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3369.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14256 GetRequests, 14223 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 182.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3771occurred in iteration=19, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1423.0ms AutomataMinimizationTime, 22 MinimizatonAttempts, 2425 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 29 LocationsWithAnnotation, 29 PreInvPairs, 278 NumberOfFragments, 842 HoareAnnotationTreeSize, 29 FomulaSimplifications, 6833 FormulaSimplificationTreeSizeReduction, 941.9ms HoareSimplificationTime, 29 FomulaSimplificationsInter, 1204 FormulaSimplificationTreeSizeReductionInter, 2166.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 516.5ms SsaConstructionTime, 3039.2ms SatisfiabilityAnalysisTime, 38976.8ms InterpolantComputationTime, 7150 NumberOfCodeBlocks, 7150 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 14248 ConstructedInterpolants, 0 QuantifiedInterpolants, 19271 SizeOfPredicates, 9 NumberOfNonLiveVariables, 8440 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 52 InterpolantComputations, 40 PerfectInterpolantSequences, 51730/52042 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(8640bv32 == s__state) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag) || ((!(4bv32 == blastFlag) && 8448bv32 == s__state) && !(s__hit == 0bv32))) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: ((((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 0bv32) && !(8640bv32 == s__state)) - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: ((!(4bv32 == blastFlag) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (3bv32 == blastFlag && !(8640bv32 == s__state)) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && blastFlag == 1bv32) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((((((((((!(4bv32 == blastFlag) && !(s__hit == 0bv32)) || ((!(s__s3__tmp__next_state___0 == 8640bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || 3bv32 == s__state) || ((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 2bv32 == blastFlag)) || (8544bv32 == s__state && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (8560bv32 == s__state && 2bv32 == blastFlag)) || ((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((!(s__s3__tmp__next_state___0 == 8640bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (8640bv32 == s__state && 2bv32 == blastFlag)) || (8656bv32 == s__state && 2bv32 == blastFlag)) || (8528bv32 == s__state && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (8672bv32 == s__state && 3bv32 == blastFlag) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((((((((((!(4bv32 == blastFlag) && !(s__hit == 0bv32)) || ((!(s__s3__tmp__next_state___0 == 8640bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || 3bv32 == s__state) || ((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 2bv32 == blastFlag)) || (8544bv32 == s__state && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (8560bv32 == s__state && 2bv32 == blastFlag)) || ((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((!(s__s3__tmp__next_state___0 == 8640bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (8640bv32 == s__state && 2bv32 == blastFlag)) || (8656bv32 == s__state && 2bv32 == blastFlag)) || (8528bv32 == s__state && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (8672bv32 == s__state && 3bv32 == blastFlag)) || (8464bv32 == s__state && blastFlag == 0bv32) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 678]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 348]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 400]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) || (8640bv32 == s__state && 2bv32 == blastFlag) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:53:09,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006ba46f-7dd1-4ef9-925e-f2b1daa9ceeb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...